Robert Zubrin edition.The previous thread: >>12743722
Reminder that dark matter is no more real than ghosts or magic.
great deal, gets yours now
Bad news! The SLS has been delayed!
>>12746587Zubrin and Musk are gonna be the rulers of Mars and they’re gonna send /sfg/ anons on far off assignments to keep us from accidentally ruining Martian civilization Mark my words
Look at this dusty gal.
>>12746596Not to fear, Hammond found a replacement
>tfw no water worlds to land water boats on and water sail on searching for life andlaunching UUV called Ingenuity on
>>12746596>Oh no!>Anyways Superheavy BN2 is being stacked
>>12746599I really hope Zubrin gets to mars one day. He really is a great speaker and whatnot
>>12746600damn, percy looking crisp af
>>12746612europa submarine
CAM OON /sfgee/ SCOOR SOME FACKIN PHYS[math]\displaystyle y = \sin^{-1}\frac{\frac{GMm}{r^2} - \frac{mv^2}{r}}{F}[/math] GM is the standard gravitational parameterm is the mass of a small bodyr is the distance to the center of the big bodyv is the tangential velocity of the small bodyF is a force on the small bodyWhat can this formula be used for?
>>12746596
first for Big Jim
Reposted from dead thread>>12746444Yeah okay but I'm not talking about actual MORMONS dude. Like, I'm not even necessarily talking about a religious group. There just needs to be a population of people living in orbital habitats that pool their money and buy an orbital habitat to live in together which all share the same general life ideals of "I want to have like 5 kids". Kids growing up on that orbital will inherit their parent's way of life for the most part, pessimistically 60% of them anyway. With a starting population of 10,000 people, 5 kids per couple on average, and a 60% ideological retention rate, the population of this "space-mormon" group grows to 25,000 people the first generation (say 25 years), 62,500 people after 50 years, 390,625 after 100 years, 95.367 million after 250 years, 9.1x10^11 people after 500 years. That's already entering the beginnings of dyson swarm territory. Also keep in mind that every generation is losing 40% of its numbers to literally any other lifestyle (ie I only want 1 kid, I don't want kids, I want to play MTG, etc), so the actual human population at this point would be even larger.
>>12746473So how do they get the deposition of molten alumina to happen and form a structurally strong pad before the dynamic pressure of the exhaust just blows the micron scale dust grains away, and prevents the droplets of alumina from actually bonding to anything?Oh wait they didn't think that far. Dumb concept, if you want to hover for ages you can literally just drop a sheet of weighted kevlar blanket onto the ground and land on that.
>>12746642what's this?
>>12746648Shit
>>12746587>”A signed message from Pope Paul VI was included among statements from dozens of other world leaders left on the moon on a silicon disk during the Apollo 11 mission.[5] Following the mission, William Donald Borders, Bishop of the Roman Catholic Diocese of Orlando, told the Pope that the 1917 Code of Canon Law placed the moon within his diocese, as the first explorers had departed from Cape Kennedy which was under his jurisdiction.”Please God please let me go to Mars before I die
>>12746648meme rocket
>>12746630isn't this part of figuring out the Roche limit?
>>12746501If you want a preview of how this is gonna work, go use a leaf blower to blast gorilla glue at the sand on a beach and watch the globs touch the sand, get coated in grit, lose the ability to stick to anything, and then get blown out of the crater you're excavating.
>>12746630If your equation is more complex than F = m*a it is not important in real life
>>12746663Catholics are restricted to the lunar surface. They are otherwise fair game for tunnel-dweller hunting parties.
>>12746587Woooah RARE ZUBRIN
>>12746630The top part is force due to gravity minus centripetal force, which if set to zero could be rearranged to give orbital velocity, but i can't figure out that the division by F or the inverse sin is for.
>>12746630Well you're taking the gravitational force between two objects, then subtracting centripetal force on the smaller object. Now if the equation was written in terms of F without sin and y that would simply be the gravitational force on the smaller object accounting for centripetal acceleration. So uhh why are you taking the inverse sin of something that should equal 1? I dunno, I sucked dick at physics which is partly why I became a geochemist.
>>12746587>>12746677Do my eyes deceive me? Am I in the OP?
>>12746672I’ve always wondered how thousands of years of living on the moon/mars would affect people?
>>12746665Well, they have similar parameters I suppose, it's related to an extent.>>12746679>>12746679yeah that's rightI'll just say it (we need to send that space frog with the cancer rocket at some point anyway):The formula gives you the angle with respect to the horizon that a rocket (usually a second or third stage that has reached the target apoapsis or planned periapsis, OR has reached a target vertical speed) needs to keep to mantain 0 vertical acceleration. Naturally it changes as the tangential velocity increases.It can be easily modified to keep vertical accelerations other than 0.It's stupid as that.
>>12746700>>12746683meant to (you) you tooalso clarifying, F, the force, is the rocket engine force of course
>>12746587Hi Bro’s. My genetics teacher just said that humans, with technological intervention, could successfully colonize a new planet with as few as 50 members, assuming that the people have good genetic diversity as-is. Is he right?
>>12746728I guess?you can also pack a couple of thermos with frozen coomsthat way you can get thousands of bloodlines
>>1274672850 is lowest minimal viable population you can supposedly get away with for humans, though other papers suggest a few hundred would be greatly preferable.
>>12746736>>12746728Yeah I was thinking that but he meant like only 50 individuals with no extras. It’s part of this problem we have in class about “how many people of each blood type would you have in this colony” and I just said >Oh everyone should be O- no one else. Bam, no chance of differing blood types.
>>12746648the greatest space plane never made
>>12746684
>>12746612titan isn't a water world but it does have surface seas of liquid
Anyone know if there’s been any word for when the sn10 test is happening?
Could you get away with wearing a partial body pressure suit on Mars? Your head and ass get pressurized to keep everything in, and everything else is just arctic gear. Would your blood still boil if you did this?
https://patents.google.com/patent/US3652091
>>12746587>”Hans Koenigsmann, SpaceX: The cause of the Falcon 9 landing failure on the most recent launch was “related to heat damage.” He adds it’s an ongoing investigation and declines to say more.”Rip B1059. Damaged due to heavy west and tear.
>>12746664>It's NOT a rocket you mongol
>>12746773Three player chess will never work because the losing player gets to decide who the winning player is. The worst player ends up being the real winner because they ultimately determine the outcome. It's fundamentally flawed.
Why is musk so dead set on making enemies out of the rich&ruthless?He is going to end up in a suicide by a bullet trough the back of his head while his hand and feets are tied up.
>>12746789well, he's richer than all of them except Bezos. If you're a hitman would you rather be punching down or punching up on the scales of power?
So what happens here?that thing is deep
New pics dropped
>>12746809Mostly just B/W of the descent video sadly
new raptor. Wonder if this is an older one or a raptor hot off assembly/
>>12746767today, and the road is closed, but beyond that they never say
>>12746806these pictures have taught me how hard it is to determine scale on alien worlds. No fucking clue if this is the size of multiple city blocks or a few meters across.
>>12746809i fucking love rogs
>>12746728inbreeding is a meme, you can fix it by making sure every woman has at least 10 kids. If you build up a large population and just don't allow the individuals that show deleterious alleles to breed, those deleterious alleles will be filtered out of the population. Basically you'll go through a teething period where only one or two children of every batch can have healthy kids, and once you come out the other side you could literally have ten generations of brothers marrying their sisters with no ill effects. We'd basically be cheetas at that point, where everyone can donate blood and tissue to anyone else, no more organ rejection, etc etc, but the whole population becomes vulnerable to major impact from disease (imagine if everyone had the same immune system and it happened to be the configuration that lands you in the "covid-19 will kill me" zone).
>>12746828Yeah it's hard, we lack references. Even when we have videos it's hard to make sense of it, perhaps even harder.In this case, this cave (or pit or whatever it is) entrance is 160 meters in diameter.
>>12746828yeah, watching the landing video I had no idea what the scale of anything was until the rover literally hit the ground
>>12746831That sounds like a fucking major problem.
>>12746772Yes, the pressure around your torso would force blood into your limbs, inflating them and starving your organs of blood. Eventually your arms and legs would start to rupture things and you would likely bleed out subcutaneously.
>>12746785That's literally real life though>>12746809pillow basalt formations or ancient stromatolites? if only we had a guy with a hammer to break it open and find out in five minutes
>>12746840Well shit
lmao...THE KRAKEN
>>12746824I wish SpaceX cued is in on how many Raptors they’re on now.
>>12746824>It's SN42, back from the dead
>>12746848
>>12746666sounds hilarious>>12746834>>12746836if I can find the time I want to take images of the landing and pair them with equivalent heights on earth. Fortunately the lady commentating was giving on-the-fly altitude callouts.Pic related is only ~10KM above the surface. I think part of the reason the landing is confusing is that people (including myself) expected the rover to be far higher than that since it was approaching from space. But once visual of the ground is obtained it's really quite close. Most of the decent is done with the heatshield on.
>>12746848>SN52raptor production is a serious problem here. At the current rate they're going they won't be able to afford crashing any superheavies
>>12746848he's coming for your methane
>>12746839Is it a problem if you live inside a managed ecology with very little in the way of pathogenesis? Probably yeah, but not as much of a problem as compared to sharing a planet with a country that uses wet markets and international air travel simultaneously. Besides the immune system thing can be fixed by direct genetic tinkering, all you're really looking for there is variation between individuals so it's not that impractical to imagine tweaking a few base pairs in a few zygotes to artificially accelerate the genetic drift.
>>12746857I’m 98% sure that they’ll never put more than 4-6 Raptors on Superheavy until they’re fully ready to try an orbital flight.
>>12746847A constant volume torso and head with mechanically compressed limbs would work really well though, and would pretty much solve all of the problems with both designs.
>>12746860part of living in a managed ecology will be fortifying yourself against total system collapse which involves everyone dying of the same disease at once
>>12746857It's weird because the production was ramping up quite steadily until recently. Maybe they're switching something over.
>>12746857Yeah that's 10 raptors since SN8? 3 more lost from SN9 at least, so seriously looking like raptor production could be a bottle neck very soon.
>>12746864even 4-6 raptors is a lot when they only have a backlog of 10 or so
y no more green raptor
>>12746864They'll likely do a few static fires, but no need to do any flights with more than 4 Raptors until they are going for orbit, I agree.
>>12746856for reference here's ~12km from SN8's flight
>>12746846>ancient stromatolitesimagine being so lucky that you land on a field of ancient stromatolites on an alien planet lmao
>>12746684>>12746677Some anon was realy sad that he allways was late to the party with making a new /sfg/ thread and not able to have a Zubrin edition. So I decided to help out a little.
>>12746666nice digits, mega satan, but surely this will be less of a problem in very low pressure or vacuums where the engine plume expands and doesn't impart much force on the surface no?
>>12746867They’re changing Raptors steadily it seems. Remember that green one out of nowhere? And now Elon wants better throttle capability so expect a few more destructive tests.>>12746878It’s kinda like Grasshopper and Falcon9Dev1. There’s only so much you can do with a short hop before you stop learning from it. Superheavy will have less “high altitude” flights (if any) than Starship I gaurantee it.
>>12746857>>12746868to be fair we have no indication of how many raptors they have "in reserve". A specific raptor arriving a boca doesn't indicate what the foremost raptor SN# is.
>>12746866Yeah yeah, read the rest of my post where I describe that as a concern and how to fix it, dude. Of course you should keep in mind that I'm keeping the idea constrained to only having 50 people and zero immigration ever (maybe Earth died or became turbo-pozzed and cancelled every technology perceived as being a product of "inequality", thus resetting back to pre-agricultural society before immediately being slaughtered by their own first generation descendants who began the same slow climb back up the ladder).
>>12746887thank you
>>12746848>>12746855>>12746858lmao. Wonder if this is just them fucking around or if SN52 is a jump forward in some way.
>>12746868Working through the old engines, anon. Why would they skip from SN40-something to SN100-something even if they had the engines? They gotta use the raptors between SN40 and SN100 somehow. May as well be during the initial development phases.
>>12746870what makes you think they only have 10 in backlog
>>12746848hope later models clean up the pipework. it's doing my autism in.
>>12746891>Remember that green one out of nowhere?They probably baked a nozzle longer than they meant to, built up an extra thicc chromium oxide layer, and said fuck it it'll be fine, use up the surplus parts.And yeah, they really only need to hop the Booster once, MAYBE twice, and they could probably get away with never hopping it before trying to launch the stacked prototypes.
>>12746908It's sexy
>>12746914I love looking at complex machines that I barely understand
>>12746587Will this magnificent retard get to see humans land on mars? I mean, he has been at it for almost half a century already, it's sad to see the results of a lifetime not get to fruition...
>>12746898they only name them because they produce so few. if they actually ramped up production they wouldnt bother naming them. it's a sign of failure
>>12746831>billions of dollars>millions of man-hours>generations of eugenics>all to create a society where incest is allowedis this elon's endgame?
>>12746907I guess I'm assuming that they keep their backlog in Boca Chica rather than request a truck to bring down each individual engine as they need it
>>12746908>>12746914looks weird as hell naked. I'd post the pic but I guess I didn't save it.
>>12746917you dont think he got 10 more years in him?
>>12746918Right, which is why road vehicle engines have serial numbers too, fucking retard.
>>12746856>>12746879
>>12746927name, not serial. you're a double retard
>>12746928tweet that to elon
>>12746932it's name is raptor...
>>12746928OK now do the whole video
>>12746933No Elon's twitter is gay. He has thousands and thousands of normie comments and memes to sift through. He will never see shit /sfg/ tries to share with him
>>12746920>not just allowed, but mandatory>>12746921Yeah it makes more sense to me that they'd keep the engines in a climate controlled shed next to their factory and just send a few to Boca every time they need them. Raptor is robust enough to spend a few weeks under a Starship in the elements but it'd be stupid to move all the enigines to the launch site right as they come off the pad. It's likely that they keep going back and tweaking the engines they've previously assembled while they're still at the factory too, as they make little improvements.
>>12746728That's one of the absolute minimum requirements, but the actually reviewed papers go from 250~2000 to actually work. Some even quote 10000, but I'm not sure how accurate those simulations are.
>>12746944The total human population literally dropped to between 3000 and 10,000 after that Indonesian supervolcano erupted, so there's your hard limit for the lower bound otherwise we would not be here. It's likely a lot lower too, it's just that once you get under 1000 the chances of a single event like a flood or forest fire killing literally everyone on one swoop becomes a real problem.
>>1274692510 years at a very optimistic schedule, assuming that Musk doesn't bite the bullet or gets done in by ULA snipers along the way you mean.
>>12746956Adding to this I just realized how brutal the K-T extinction event must have been to wipe out all the non-avian dinosaurs when we know that a single breeding pair could produce dozens of eggs in a single clutch. If literally any of the dinosaurs weren't outright killed by the comet strike and its immediate effects, their populations had still been annihilated so hard that not even that level of reproductive fertility could allow them to bounce back. You would think that at least one species of small herbivorous therapod would have clung on long enough in some small corner somewhere to produce a fossil record, before eventually going extinct due to selection pressures from the rapidly evolving mammals.
>>12746928that shit is going to be rad as fuck
: - )
>>12746925Zubrin will live at least 10 more years in Elon time>>1274696010 years is not optimistic for Starship landing the first crew of 8 people on Mars and returning them to Earth. It's optimistic for seeing fleets of Starships departing for Mars with 40 people aboard each spacecraft and large scale ISRU on the planet, I'll give you that for free. Starship taking more than a decade to get humans to Mars is definitely a pessimistic estimate at this point, don't forget that in between every Mars launch window Starship will be flying hundreds and even thousands of missions to LEO, GTO, GEO, highly-elliptical Earth orbits for interplanetary payload dropoff, the Moon, unmanned to NEOs, and unmanned to other planets, not to mention the previous two or three launch windows will likely see at least several Mars landings by unmanned Starships (with the landing preceding the manned mission involving as many as a dozen Starships packed with cargo n' sheeit)
>>12746981I see some cardboard there as well, but I can't see what they wrote on it
I have two sides I can be your DEVIL >>12746848 or your ANGLE >>12746981
>>12746981
>>12746848Higher thrust version of Raptor meant for the Booster? someone zoom and enhance and cross reference and do the other autism things
>>12746971But they did survive.
>>12746997I kinda doubt it. "R-boost" variants should have larger turbopumps while also being more simple.
>>12746981This smug face...it mocks my very being.
>>12746971An interesting and depressing side note to the K-T extinction. Hadrosaur bones have been identified in strata that post date the impact event by what I think was around 100,000 years. So non-avian dinosaurs did manage to survive the earth-spanning disaster that was the asteroid impact but for some reason just never truly managed to recover afterwards.
>>12746986I think that Zubrin has lived long enough to not be mislead by such high amounts of "let's just hope it works out lmao". Imagine that a single important natural disaster, heart attack or just accident would be enough for all that to be vaporized and not work anymore in that timeframe. Have you considered the possibility that Starship might just...not work? So far it's still only on paper, what would happen if an unforeseen engineering problem pushes it back two or three years simply because of a design flaw? Elon's crew is pretty good, but they're not beyond failures.
MORE ROGS
>>12747027mmmrogs
>>12746999Not him, but what part of "non-avian dinosaurs" do you not understand
>>12747033He's a bird brain
>>12747033Actually zoomed right past me. I'm sorry for being illiterate anon.
>>12746971>>12746999>>12747033What about crocodiles and alligators?
>>12747046archosaurs
>>12746999Read again, that anon said non-avian dinosaurs
>>12747046Crocodilians are not dinosaurs, though they are part of the archosaur group together with dinosaurs and pterosaurs
>'Dare mighty things': hidden message found on Nasa Mars rover parachute
bruh moment
>>12747073foam strikes. foam strikes everywhere.
>>12747073Sorry, what?
>>12747073>boldly falling back to earthTHROOOST
>>12747073Bruh...
>>12747016It’s because entire ecosystems collapsed, thus eventually devastating a ton of shit further down the food chain. Mass extinctions are cool but crazy. If you really want to go down a rabbit hole look into the P-T mass extinction>>12747046They already existed once dinosaurs were around. They weren’t affected because they could still find plenty of food in their comfy swamps. Apparently the mass extinction left them alone lol
>>12747086>challenge hersensible chuckle
>>12747073>Boldly Goingto where?
>>12746956This was found to be untrue, anon. The bottleneck was not found to correlate with the volcano. Also there was no difference in the weather in east Africa which is where most of our ancestors were.I used to believe this crock o' shit myself so, I don't blame you.What Toba *might* have done was to wipe out whatever earlier out-of-Africa movements had got to South Asia / Southeast Asia. Those remains aren't preserved well but I think some have been found.
>>12747017Except that Starship does work, except for landing at 9.8 ms-2 gravity. There are iterations coming which are actually concentrating on that and may fix it. Mars' gravity is, of course, 3.72 ms-2 so that much easier to land.
>>12746652vrooom
>>12747095Not that anon but I always believed this too. So there was a bottleneck event but it wasn't correlated with the volcano? What the fuck happened?
>>12747091¯\_(ツ)_/¯
>>12747091The friends we made along the way.
>>12747104We have had shitty hoppers that aren't even on the size of the thing for you to affirm that with such certainty. It's ok to be hopeful anon, but it still needs to carry something to LEO/beyond for anybody to believe that he has an actual shot at Mars. Until that capability is proven, it hasn't been shown to work.
>>12747118disgusting
>>12747027>those erosion-rounded pebblesmmmmm
>>12747073>hmm shuttle C is gonna throw away three of these expensive RS-25 engines>What if it threw away 13 instead?>GENIUS
>>12747125it's literally in an old spillway/river delta
>>12747106
>>12747107I don't actually know. It might have been something else, like a technology shift or a virus.The last Wiki has heard about Toba was this 2018 debunking :http://johnhawks.net/weblog/reviews/climate/toba-bottleneck-didnt-happen-2018.htmlI know that Wiki sucks but it *is* a repository of midwit wisdom, and if they'd heard a resuscitation of the Toba theory they'd have noted it.
>>12747122>It's ok to be hopeful anon, but it still needs to carry something to LEO/beyond for anybody to believe that he has an actual shot at MarsWith Starship? But that part is easy, they already have plenty of experience routinely reaching orbit with Falcon 9, and Starship uses propellants much closer to each other in temperature. The first part of the hard part is reliably doing reentry and landing with Starship, and the second part is doing that in a way that can be rapidly repeated. Actually going to orbit is gonna wait until after they nail the landing, and it'll likely work on the first try. Maybe the return from orbit won't go perfectly first try, I'll admit.
>>12747073>OOPS! ALL HYDROGEN!
>>12747129Yes, but still. Good shit.>>12747135Never ever on Earth, wouldn't work on Mars because no horizontal landings allowed, but would not be horrible as a Titan SSTO.
>>12747142ydrologz XDDD
>>12747151simble adoms
>>12747146Titan is pretty much the only place in the solar system where aeospike nozzles make sense
https://youtu.be/XxsSj922bNsNSF is online. Tank farm activity. Let's see if yesterday was a fluke or if SN10 will continue SN90's engine start troubles.
>>12747160Also another cam from Labhttps://www.youtube.com/watch?v=tYZaaz8UbRE
Do I have a chance to work in the space flight industry with a degree in Chemistry? Currently taking a BSc and will definitely be taking a Masters, but looking at what route to take and what to specialize in.
>>12747091Goldly Boing.
>>12747164might as well post the other two as well>close-up launch pad cam: https://youtu.be/qCbgoqMcirI>nerdle cam: https://youtu.be/sTA0GTgFn5E
>>12747166probalogz
>>12747170Feel like everyone either is an engineer or chem engineer, so wonder if there's even a place for pure chem fags like me.
Anyone here have a youtube channel? Also what happened to that anon who did the curious droid-style videos
>>12747166Yeah. But if you want much higher change, get internship and expand your horizon building strong foundations and heuristics from which you build up your foundations.
>>12747157Yup. Combination of low delta V requirements making SSTO feasible, plus thick and extremely tall atmosphere which is basically ideal for offsetting the drawbacks of an altitude compensating nozzle. With that being said, it would still make sense to mount a set of air breathing jet turbine engines (which were supplied with fuel and oxidizer internally and just used the air for reaction mass) to perform most of the initial climb out of Titan's lower atmosphere, only needing the aerospike for the final 3/4ths of the burn to orbit, given that Titan's gravity is very low (local TWR for all engines is improved) and air breathing jets can easily be 100 times more efficient than the best chemical rockets, with some achieving over 150,000 Isp.
~t-15-20 mins
>>12747210for what?
>>12747213Nuclear war is starting
>>12746981 I can be the nicest person you’ll ever meet.. >>12746858 or a TWISTED FCUKiGn PSYCHOPaTH
>>12747160>SN90
>>12747213static fire attempt>>12747195you mean Cost Plus Content? https://www.youtube.com/channel/UCkoHeO1Gn8Trs99yuqUvQBg/videosHe's still making videos at a good pace. In fact looks like there's a new one on the Saturn 1 that YT didn't tell me about. Nice.I think someone else posted another channel but I can't remember the name.
>>12747195He still makes stuff. I like his content a lot actually. Anyhow what should a person do if they want to start a space YouTube channel? I have zero video editing knowledge
>>12747195This is our one and only youtube anonhttps://www.youtube.com/channel/UCkoHeO1Gn8Trs99yuqUvQBg
>>12747219>mfw sn90 is still having static fire aborts
ass venting
>>12747202Jesus Christ, anon, this is a blue board!
>>12747216oh ok
SN10 is VOOONTING
>>12747216Fucking finally
>>12747027Is this wind erosion or water erosion?
>>12747236Imagine the smell
>>12747225You should probably start by making videos. Try, fail, try again. Make them out of steel to save money and simplify fabrication. Don't fall for the hydrolox meme.
>>12747236
>>12747245Probably a bit of both
>>12746848>>12746855>>12746858
>>12747247Thanks bro I’ll try it. Also how do you make KSP videos? I’m talking about that fancy Matt Lowne stuff not shitty 3FPS stuff. Lastly would anyone want some bodybuilding/exercise stuff in my channel?
>>12747248Kek
>>12747225Learn how to use VEGAS PRO (cracked) or DAVINCI Resolve 17 (free version) or something else. The main goal should be to push out content initially and then improve over time. It doesn't matter too much on what the initial quality is, as long as its decent enough.
>>12747241>6 meter OD turboramjet hybrid engine mounted to a 747-sized SSTO reminiscent of the SR-71 Blackbird coming in for a landing on Titan at an air speed of 15 m/s
>>12747262
ENGINE CHILL
>>12747255Try to look up screen capture software that won't drop frames, also do a LOT of time lapse stuff because it lets you compress choppy footage into high framerates. I don't have much more advice though because I don't make videos lol
inb4 boom
>>12747276>>12747257Thanks bro’s. How do I make a new YouTube account? My current one is connected to my gmail.
SIREN
>>12747287Static fire?
>>12747293ye
>>12747293SOOON. ~3-5 mins
Are the vents behind the forward flaps new?
>>12747300steam from ears
inb4 abort
Is the bopper an instrument stand like it's older brother now?
Will bet my life savings they permanently fuck up a raptor with this test and it will be another 2-3 weeks before they have to redo this static fire again
>>12747314I bet it's still an active prototype but they're just focusing on SN10 before they finish testing 7.2.
>>12747314They couldn't break it, but in trying they reached such an unholy amount of pressure that the spacetime inside the tank underwent vacuum decay, and is now held back by 3mm of stainless steel. So they're just gonna leave it there until they either need the stand or find a better place to chuck it.
IT BLEW UP LMAOOOOOOOOOOOOOOOOOOOOOO
HONK
What did that mean?
it sharted!
>>12746587ABORTABORTABORTit farted then shut off
I'M THROOSTING
>>12747330it better have, this general hasn't had a good shitstorm in weeks. Even the rover landing was kinda boring desu, a least compared to SN8/9.
BRAAAAAAAAAP
FLIGHT THIS WEEK BOYS
>>12747341nah, that anon literally posts that everytime there's a test>>12747334>>12747335>>12747338looked pretty good but then again the vents opened right at the end, so it may have been an abort at the very last second.
>>12746831>just don't allow the individuals that show deleterious alleles to breedWhat are recessive genes?There have been studies of recessive genetics lying dormant for multiple generations. Unless you test each kid to make sure they are dominant/dominant and not dominant/recessive, you'll never know if they are a carrier until two D/R manage to reproduce, and even then the recessive genetics may not show up unless the bastard child gets the R/R combo.
Fuck why is that roar going on for like a minute?
>>12747343more like engine swap this week
>>12747345>that anon literally posts that everytime there's a testKek I did it this time but I'm pretty sure there's more than a few who do it
flight tomorrow?
The header tank still looks frosty. Any chance they relight through it?
>>12747351Earliest flight date is thursday.
ha, NSF froze on this frame
they loaded the entire thing up this time. Look at that cute frosty nose.
>>12747359Holy shit it’s beautiful.>>12747348FUDposter you must have optimism
>>12747342
>>12747342I'm not an expert but I think that looks pretty good>>12747347the depress is also loud as fuck. That's what you're hearing
Starhopper will decide SN10's fate.
>>12746663>Church law explicitly encourages leapfrogging expansionism across the solar systemThis is exactly the spirit that's been missing since all the blank spots on the political map of Earth got filled in.
>>12747362>>12747369This explains, never sounded like that while it was partially filled.
>>12747369decent length, no memehz, no toasty, best static fire yet
>>12747224>you mean Cost Plus Content? https://www.youtube.com/channel/UCkoHeO1Gn8Trs99yuqUvQBg/videosAnons, do this guy a favour and like and comment on his vids. I'm not him, just think he deserves the boost
>>12747383t. Cost Plus Content
>>12747379Their earlier ones were pretty long. Up until SN8 almost killed itself of course
>>12747346So test every kid, duh. Actually I didn't even suggest testing everyone, just have everyone have as many children as they possibly can to maximize the chances of one not having any dominant bad genes, and only allow those ones to have children later.
>>12747388dubs confirm, however go like and fav anyway
Did it fire?
>>12747450Yep. SFG seems dead right now though
>>12747146Kerbin will do
Nomadd just got an overpressure notice tomorrow, so we may be seeing another firing.https://forum.nasaspaceflight.com/index.php?topic=52924.msg2195425#msg2195425
>>12747481Man I really hope they do a quick engine relight fire some time.
>>12747489well, they did pull that triple fire that one time>>12747450yeah. Looked pretty good but no official word yet.
>>12747348 Q2 2021. Ever time.
>>12747481>like clockworkneed a couple more firings to really make sure the raptors get fucked before inevitable swap and recycle. they simply dont know how to do anything right the first try, unlike Blue Origin and Virgin Galactic
>>12747343>"haha oops, we broke another engine :)"
>>12746587>>12746592Redpill me on zubrin
This is cool. You can see the cooling channels in this smooshed raptor.
>>12747489you're delusional
>>12747514its so sad seeing the raptor like that
>>12747513A man denied his dreams. But he always wins in the end...
>>12747481Those aren't always accurate, and it was pretty soon after today's static fire, so I doubt the cops had those ready and waiting for SpaceX to tell them that the static fire went poorly/not at all to quickly distribute. Not saying they won't test tomorrow though.
>>12747519There will eventually be thousands of these engines but the ones expended in early testing have the most meaningful impact
>>12746806Best leave it be lad, its bad luck to poke the abyss. In 'em tubes the souls of spacemen what met their maker.
>>12747541based
>>12746971>You would think that at least one species of small herbivorous therapod would have clung on long enough in some small corner somewhere to produce a fossil record, before eventually going extinct due to selection pressures from the rapidly evolving mammals.You'd think so because it's probably true, it took about 10 million years for placentals mammals to solidly dominate land ecosystems, if any non-avian dinos made it we'd definitely be living along side their descendants today.
>>12747514https://youtu.be/JPVaDaynNKM
>>12747541Kek, redpilled
Another original thing from chinks
>>12747553Please, please tell me someone has the Chinese poster of Starship at an airport like a jet.
>>12746986This. For some reason we've seen an influx of extremely pessimistic people to /sfg/ recently.
>>12747553What an intelligent and innovative race. Definitely would not collapse in on themselves if they were shut off from the world.
just went to Zubrin's twitter, i didn't realize he was this based
>>12747561uhhhh he's kind of half based, half fucking retarded
wtf I love i-Space now
https://www.youtube.com/watch?v=_qH2hI9GwFQ
>>12747572maybe, my baseline is the average person on twitter, so anyone who isn't a raging shitlib is already on the good side
>>12747580Black Hole Space, Dark iSpace, Glory Interstellar Beijing Space, Glory Hole Space, Space Space Space
>>12747558Can we please just ban the chinks from the world
74% of my investments are now in space memes
>>12747586Oh woah this is really neat actually. I wish it had a human for every rocket though
>>12747555i really need to see that
>>12747590Tojo did nothing wrong, desu.
>>12747594Nevermind I'm retarded; they have humans for scale every few rockets. This video is fucking cool
>>12747586AAAA THE V2 WAS SO BASED
>>12747599Angreed, Tojo the Thief was pretty good artist
>>12747599Uhhhh that's Japan. Unless your joke is going over my head?>>12747553Of fucking course. Still pretty cool though. China is pathetic and can't do anything original
>>12747612Lots of good scaly artists just went away. Athus died, Narse doesn't do much, Syrinoth is reclusive, Skadjer disappeared.Kodar is still based though. I love his stuff.
>>12747586The sea dragon about to BRAAAAAAAAAAAAAAAAAAAAAAP the fuck out of an entire house at the end there lmao
>>12747613https://en.wikipedia.org/wiki/Second_Sino-Japanese_War
>>12747553>can't even align the circles right in the engine layout
>>12747623Its a fun paper rocket, but its there for lulz.
>>12747622Isn't narse dead?
>>12747624Oh oh I get what you're saying; yeah I agree with youI thought you were trying say the Chinese did nothing wrong but you just said Tojo. Nevermind.
>>12747630No, Athus is dead (his husband)Narse just doesn't do much anymore.
>>12747630Athus died so narse lost the burn to draw. I guess being a full on scaly artist does not pay much in commissions when everyone wants a dog or horse.
How long can you hold it in space? Poop and pee I mean
>>12747586I've spent so long on /sfg/ I'm pretty sure I know trivia about almost every rocket ever launched to space (save for niche ones like Israeli, Iran, N. Korea ones, etc.)From this video the ones I know least about are Sprint (the first one shown; never heard of it) Copenhagen Suborbital's (which doesn't matter because they aren't really a real company) and the Atlas. I know fucking jack shit about Atlas and I feel like I should know way more about it
>>12747073What if we named the Shuttles after people instead?
>>12747644I once didn't poop for six days. I wasn't really eating though.
>>12747017>Imagine that a single important natural disaster, heart attack or just accident would be enough for all that to be vaporized and not work anymore in that timeframe.What if Elon does a Korolev and Starship becomes the new N1?
>>12747660We all die here together on this rock.
>>12747660"muh N1" is one of the oldest most overused invocations around. N1 was a perfect storm of systemic failure, it isn't comparable to Starship at all.
>>12747654Wow, really cool. I bet in space you could not poop for twice as long, maybe even a month
>>12747648Atlas is based. It's the only (??) 1.5 stage vehicle ever.
>>12747660If Starship does an N1 it’ll just be flown and flown again until it’s not exploding. Also N1 flight 4 almost made it
>>12747553the 2nd stage is retardedly short on this thing
>>12747553With a burning rage. I hate chinks
>>12747679>If I fly my rocket enough times it can't explode you know it's bad when you're using circular logic to justify the lack of LES in your orbital launch vehicle
>>12747586the vulcan is a pretty stout boy. And I'm always surprised at how tall the F9 is.
>>12747698>6 SRBswhy
>>12747698Vulcan has admirable girth but holy shit, the reliance of ULA on SRB's is stupid
>>12747692Bruh most rockets have issued when they first start flying you plonker. Anyhow Starship doesn’t have an escape system because it would be useless on Mars
>>12747553The most annoying part about chinks stealing tech is they will probably claim to have been the original creators even when they do shit like that.
>>12747703When you buy American(tm) engines with shit thrust density so you can support American(tm) srb manufacturers at the same time. God Bless ULA!
>>12747708Why? They work, and non-segmented even better
>>12747703>>12747733Vulcan is actually height restricted so it can use Atlas and Delta’s infrastructure without needing a change. That’s why it’s not taller than it is now, and that’s why it needs SRBs
>>12747660Scientific development is kinda unpredictable bro, he just has to stick to his guns and throw away the designs that don't work, and keep trying with new stuff. He'll only fail now if he either goes full retard or fucking dies, it only takes one wrong Neuralink chip surgery for it all to go down.
>>12747746Going taller would only make the vehicle t/w worse, which is the whole reason for the SRBs.
>>12747746Yeah they had their hands tied. They could’ve added two or more engines and went all in with SMART so they don’t need SRBs but nah
>>12747777Checked and yes, ULA's entire history can be summed up by "they were a forced company, they COULD achieve great things, but they keep getting cucked by the government, the rules, and themselves"
https://www.washingtonpost.com/technology/2021/02/23/musk-tesla-texas/>Tesla did not respond to repeated requests for comment. In response to emails seeking comment, Musk replied only: “Give my regards to your puppet master.”o i am laffin
>>12747792BASED
>>12747792LMAO.
>>12747792Well that's gotta be archived for the Musk Library of Marshttps://archive.is/pfKjd
>>12747792Aay lmao
>>12747792Holy fucking shit.I can't believe that's real.Legitimate absolute legend.
>>12747792>WHO RADICALIZED YOU, ELON?>You did.
>>12747792>whopostchecked the cached version, not gonna give them the satisfaction. vague character assassination fluff piece, elon figured this dude out 100% lmao
>>12747792How can he get away with saying such things to the Washington Kike?!?!?!
>>12747692>What's iterative design dur
>>12747792BASADO
>>12747792>Give my regards to your puppet masterW-what did he mean by this?
>>12747792Based AFJournalists should be beheaded
>Elon Musk announces that blue checkmarks will be denied flight seats in Starship to Mars
>>12747833Baldo
>>12747833Jerry Bonzo owns the WaPo
>>12747792>sweating intensifies
>>12747844Pretty sure every astronaut has a check.
>>12747844Musk and Dorsey(CEO/founder of twitter) are on friendly terms.
>>12747648https://www.youtube.com/channel/UCILl8ozWuxnFYXIe2svjHhgThis basedboy is bps.space
>>12747873I don’t
>>12747878even after that teenager gained root access to the entire website?
>>12747073>13kg to leo
>>12747890Yes. There's no animosity between Musk/Twitter/Dorsey. The only thing Musk has criticized twitter about is the need for better AI to detect spam. That's after Dorsey invited him live to a conference call.
>>12747883Yeah he said astronaut, not cosmonauts
>>12747073I presume that the engines in the boosters are either RS-68’s or are STME’s? Both cost $20 Million so 10 of them is about $200 million. Not a lot but if you’re boosting 100 tons to LEO it’s not bad
>>12747792ABSOLUTELY SUGOIABSOLUTELY SUBARASHII
>>12747792i mean these journos are literally working for the richest man in the world's blog.
>>12747924>second richest
>>12747792https://www.youtube.com/watch?v=0sVceJ4lNJk
>>12747703TWOWO
>>12747944I love elon musk so much hahah
>>12747951Alright now uhhhhhh, let's recover the shitty engines but ditch the exuberantly expensive, milled-isogrid core
>>12747958I hate him. He's a union bashing, slave laborer, murderer of congolese children, instigating bolivian coup, being against covid, supporting Trump, billionaire, and going against government orders. He's a fraud not an engineer.
>>12747967Unions are 98% shit nowadays
>>12747967How does one become so based?
>>12747967>I hate him. He's based, based, based, based, based, based, and based.I'm confused
>>12747974Found the racist
Oh, scumbag Thunderf00t just steal other's content and claimed it. Just report the scumbag.https://twitter.com/TrevorMahlmann/status/1364384471949180932
>>12747997nah. dunderf00t is entertainment. I mean I haven't watched one of his videos since I was a baby atheist but making fun of them doesn't get old
>>12747979I’m not white
>>12747997How did he post so many times in one minute?
>>12748012If you not Jewish you're both a racist and an antisemite (separate, special category) by default.
>>12748012Internalized white supremacist
>>12748018>>12748020Venezuelanbros...I kneel...
>>12747792The future is bright.
We really are in one of the best timelines for space exploration
>>12747572He is the based retard
>>12748134The best timeline would be if project orion actually went ahead. But this is the second best timeline imo.
https://www.youtube.com/watch?v=puIQqKBzUKw>AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHHH!!
>>12748174It's the best timeline that could have come out of constellation crashing and burning
>>12748187True
>https://youtu.be/FCUPWrv1rdkthis is a pretty cool animation of starship landing with an engine out -> switch to 3rd engine.>https://youtu.be/NSa3AWjThwU?t=166and this is a good overview of the in-progress orbital launch site.
>>12747997what a fucking jackass. He then unironically made a 20 minute video about it: https://youtu.be/pHVMlJocUpc (turn on your adblock if it isn't already)This tool lies for a fucking living.
>>12748260This faggot really busted out that retarded 'tree of liberty' quote over an invoice? What fucking sociopath.
>>12747967Based Elon
Did the static fire sound nominal this time?
>>12748260Don’t photographers license their photos and videos to make a living? Lmao
>>12748279I wouldn't care if thunderf00t was messing around with a megacorp. But devoting everything he has to destroy a small-time independent photographer because said photographer dared ask for compensation in genuine shitbag-tier. >>12748311exactly. His work is pretty good, too.
>>12748317Say what you want about the Shuttle but that perfect column of smoke it left behind it is kino
https://caseyhandmer.wordpress.com/2021/02/24/sls-is-cancellation-too-good/Orange rocket....bad?
>>12748311youtubers don't understand copyright law because youtube has protected them from it for a long time
>>12748326>After the recent SLS Green Run test failure I went looking for an article that dug into the architectural and organizational issues at play, and didn’t find much. This blog, therefore, serves as an annotated index documenting a huge, complex, multileveled and ongoing failure. >How hath SLS offended me – let us count the ways. It is hard to know where to start. The SLS is such a monumental, epochal failure at every possible level that at any level it’s self-similar – a fractal. This post was initially intended to be lean and concise (like the thread it’s based on) but like its subject has ballooned in size and scope beyond all reasonable limits.dis gon b gud
>>12748327I’d imagine it’s a bureaucratic annoyance because it’s hosted on a company’s private platform, which may deter people from bothering with it
>>12748326God damn I love Casey so fuckin much
>>12748360who is he exactly?
>>12748241this is really cool to watch. how often do you get to watch a spaceport being built?
Someone look at this stupid fucking doodle I did instead of paying attention in class today
>>12748361He works for JPL, writes very high quality, well-researched blog articles. I especially liked his series on Mars industrializationhttps://caseyhandmer.wordpress.com/2018/09/03/how-to-industrialize-mars/
>>12748372>>12748361Also this onehttps://caseyhandmer.wordpress.com/2020/08/23/progression-of-space-industrialization/
>>12746587((our jew))
>>12748326>>12748372Thank you OP, this reads like a velvety fine wine. I have my hand on my anti-SLS hardon already. And a JPL employee no less!
>>12748371Cool
>>12748371Based as hell
>>12748401Yeah it's like a pleasure yacht for going anywhere in the Earth-Moon system. Like the massive void cities at L4 and L5 or to park at the Low Lunar Orbit spaceport terminal so that you can take a ferry down for a two week jaunt at the surface casinos.
>>12748414what year is it supposed to be designed in
>>12748372>He works for JPLhow does he not get in trouble for shitting on NASA projects
>>12748419It's there in the model year - it's a 2083 Railgrinder. The LE edition that year included a lot of livery options (this one is blank) but importantly also really nice lightfield displays which line the bulkhead walls in order to alleviate claustrophobia on long coasts. Most peopl who opt for that package don't use the feature all that much though, because full-dive neural interface VR is the common way to pass the time on multi-day trips.
>>12747792>Give my regards to your puppet masterThis officially makes him the greatest living human being, right?
>>12748428cool concept. although desu it sounds a little futuristic for 21st century, if you're going for hard sci-fi that is
>>12748372this guy writes about these things and /sfg/ eats it up, but I mention that O'Neill cylinders are impractical and it starts a chimp out
>>12748420He's incredibly based. His clear view on stuff even when working directly for them is pretty nice.>>12748428That's pretty nice work anon, keep going.
>>12748445pic related
>>12748450What’s impractical about giant rotating space stations?
>>12748438Maybe the void cities, yeah. But everything else? No way. It's clear that information technologies can explode in advancement speed in a way that real steel simply can't. Sixty years for lightfield displays and neural interface VR? It's in the bag. But sixty years to move enough mass to the moon that there'll be casinos up there? Dubious. Either way the sketchiest thing is that they'd hand the keys of a small nuclear pile to some random-ass millionaire. Presumably there's good enough government scopes on-orbit that it's really not possible to get away with taking it to somewhere you shouldn't. They say there's no stealth in space, yeah?
>>12748241Great animation. How does starship not flip out and explode if the landing engine flames out? Isn’t the backup engine sitting in the wrong spot for the flip?
>>12748450This bullet list is arranged roughly from least to most scary to me.>why even go to space?AAAAAAAAAAAA
>>12748453not economically viable + points of failure
>>12748450>"The Moon is a Harsh Mistress" is not an instruction manualHe gets the rope
>>12748453The technology to build them is nonexistent. It also requires decades of in-space infrastructure. It’s not impossible but there will probably be thousands of people on Mars before we build our first O’Neil cylinder
>>12748455I think the least realistic thing is the neural interface. We aren't anywhere near that kind of tech. Everything else is honestly believable
>>12748474Hopefully we never get near it
>>12748473hundreds of thousands*
>>12748473>The technology to build them is nonexistentSo rockets don’t exist?
>>12748480>>12748473actually probably millions. its doubtful o'neil cylinders will even be built in the next century. probably not til 2300s earliest
>>12748480this. O'Neilards are delusional
>>12748470>not economically viableDubious. You just launch materials up and assemble them.> points of failureLess than a normal space station
>>12748488they'll definitely be built eventually, but we are no where near the level to build them yet, but some o'neil cylinder fans expect us to build them within 50 years from now. we should send them all to the infirmary
>>12748490>just launch millions/ billions of tons of materials into space and assemble themand don't say space elevators
>>12748474We're closer than you think. The interface technology will be designed by artificial agents, who will be designed by other artifical agents who will be designed by us. Soon in the future we're going to wield technology where we quite literally do not understand the more intricate points of how it works. Side note, I also didn't make this spacecraft a "2283" model because there would have been an intelligence explosion by then and the resulting agent would have killed us all.
>>12748494I never said they won't be built. You're absolutely right that we are optimistically several centuries away from megastructures like O'Neil cylinders
>>12748501You make a fair point
>>12748494Think of it like this. To build a Mars colony you bury modules in the desert and make concrete/proont/whatever. But either way that’s really it you just have to keep expanding. With an O’Neil cylinder you have to bring an asteroid which weighs hundreds of thousands of tons to a “useful orbit” which is already an insane feat, and then you have to use advanced in space 3D printing which doesn’t exist yet. But I’m most concerned about the face that orbiting colonies have very finite numbers of resources. This is not “The Expanse.” Even our best modern day tech is slow as shit when it comes to interplanetary travel. Worse, you can barely move anything. >>12748455Based idea bro. I’ve always wanted a SciFi universe that’s set after stuff like “The Martian” but before “The Expanse.” You know, like how there’s thousands of people on the moon, mars, maybe a few near earth asteroids, but the outer planets are still an untouched wilderness. The only thing I can think of being in this category is something like “Ad Astra,” where Mars colonies have been around for about 30-40 years but we still have yet to send colonists beyond the inner solar system.
>>12748445>>12748450LMAO O'Neill butt boys on suicide watch!
>>12748490Okay, let's look at the builders of the cylinder. How do they profit from doing it? What resources or power do they gain? Rent from inhabitants? How do those people get their living? The void is cruel, there's nothing there. I love space habitats as much as the next guy but planetary surfaces are where it's at. There's simply not nothing on planets and moons and stuff. Also look at this concept I came up with for a rotating habitat anyway. The walls and ceiling are light field displays so it looks like bright clear skies as far as the eye can see in all directions. You even get a "sun" indistinguishable from the real one and a 24-hour natural day night cycle complete with sunsets. Moving parts are the devil so landing is accomplished on inner surface runways and the whole thibg is thermoregulated via Einstein refrigerators hooked up to goliath heat pipes.
>>12748506Exactly. Live action Children of a Dead Earth TV series when? Also, Ad astra sucked lol
>>12748518>Live action Children of a Dead Earth TV series when?this but without a dead earth
>>12748450>"The Moon is a Harsh Mistress" is not an instruction manual.True, it's more like a Bible. Antispace fags get to suck vacuum for a couple minutes and then go into the recycler.
>>12748518Ad Astra was meh to me I enjoyed the visuals and spaceflight aspect but the science was crap. Still I really liked the setting and I thought it was Kino at times. Anyhow seriously a series set 30 years after the first mars colonies were started would be amazing. Mars would be too young to be an independent world but there would still be vast wilderness on it. The asteroid belt would be ripe for picking except no one has fusion drives yet so it’s off limits. And the gas giants are still untouched aside from one or two “flags and footprints” missions to Ganymede.
>>12748514>How do they profit from doing it? What resources or power do they gain?A station like that would be there to house a city of personnel and their families to do certain tasks like maintaining the magnetosphere generator that protects them and Mars's atmosphere that said station is attached to. It would be a company space city in practical usageBuilding miniature O'Neill cylinders to be the core of a colony ship for when interstellar probes find habitable or easily terraformable worlds and want to strike it out in another system is another reason to do so as it'll be that with a reliable breeder reactor, some armor, a shuttle dock and a plasma sail/ propulsion engine, and probably some generalist wildlife embryos for a DIY ecosystem
>>12748541he's not antispace, he's antiretard ;)
>>12748544Even forgiving the realism sins I just thought the characters were unrelatable and their motivations shaky.But yeah, nuclear thermalpunk or realistic fusionpunk is the way to go. Imagine what the Expanse would be like if Holden yelled "punch it!" and then thirty seconds after after Alex gunned the throttle various coffee mugs and shit could be seen lazily inching towards the aft bulkhead... telling realistic speculative spaceflight stories is going to likely be a lot more like Das Boot than it is The Expanse.
>>12748574>Imagine what the Expanse would be like if Holden yelled "punch it!" and then thirty seconds after after Alex gunned the throttle various coffee mugs and shit could be seen lazily inching towards the aft bulkhead... telling realistic speculative spaceflight stories is going to likely be a lot more like Das Boot than it is The Expanse.NSWRs and LSWRs could get you legitimate high acceleration long duration burns, but more like 1g for 5 days rather then 5g for 30 days
>>12748556The only justification you gave there for a "static" habitat is for an Earth-Mars L1 magnetosphere generator. That's a machine which forms a cornerstone of the goal of true terraforming. From a simple engineering perspective, if you want your generator to protect Mars for eons or longer you will wise up to the fact that people are way too volatile. When you need an entire planet to breathe for an indefinite amount of time, putting a bunch of violent hairless apes on board will not help the situation. Long before we begin thinking about terraforming there will come a time when we invent machines whose general problem skills mean they can keep themselves repaired given proper energy and resources. Don't you think we'd be better off to leave the job to those machines?
>>12748544>the gas giants are still untouched>not b-lining for Titan.
>>12748590Where are you going to get 40 tons of uranium a year?
>https://caseyhandmer.wordpress.com/2019/08/17/blog-series-countering-misconceptions-in-space-journalism/>While Mars’ surface is a frozen poisonous radioactive airless hellscape, Venus’ surface is rocky, volcanic, and a mere 462 C at 93 atmospheres, supercritical CO2 atmosphere with a side of sulfuric acid. This is so hot that future rovers will depend on mechanical computers/cameras/radios, because ordinary computers will melt. Obviously, sending humans to the surface of Venus is a non-starter.>That’s okay, say Venus exploration advocate(s), we’ll have a giant airship. Somehow we’ll perform EDL at 12km/s, deploy something a hundred times the size of the Hindenburg in a couple of minutes, float around for a few months, then drop a Earth Return Vehicle (ERV) the size of a Saturn V off the bottom, light the engines, and return home.
>>12748574What’s funny is most realistic fusion engines have like 0.01m/s^2 acceleration for a ship that’s a few hundred tons. >>12748577Man even with NSWR if you want to cross the solar system in under a year your ship is still going to be like 75% fuel.
>>12748603How am I supposed to do geology up there
>>12748593I was just thinking about how getting to Titan will take 3+ years even with an incredibly fast departure. I’m also assuming that NSWR/Fusion/anything too fancy doesn’t exist yet. Plus assuming SpaceX lands on Mars in 2039 (very generous), the first colony starts in 2049 (also very generous), how likely is it that we’ll have thousands of people on Titan 30 years later? I can’t see a first manned mission being a one way trip.Also Titan lacks things like metals, so ISRU of anything but fuel or water or air is going to be hell.
>>12748577>Nuclear Salt Water RocketsLiterally flushing uranium down a toilet... I can't make assertions to whether that will be practical or economical one day but fuck sake are there better uses for the 95% of the unburned isotope that gets dispersed into the void.
>>12748604>Man even with NSWR if you want to cross the solar system in under a year your ship is still going to be like 75% fuel.Not sure about that.
>>12748612It's extremely unlikely that humans visit the outer solar system this century
>>12748612>I was just thinking about how getting to Titan will take 3+ years even with an incredibly fast departure. I’m also assuming that NSWR/Fusion/anything too fancy doesn’t exist yet. Plus assuming SpaceX lands on Mars in 2039 (very generous), the first colony starts in 2049 (also very generous), how likely is it that we’ll have thousands of people on Titan 30 years later? I can’t see a first manned mission being a one way trip.SpaceX landing on 2039 is extremely pessimistic
>>12748599That is a problem for the machines to work out. We tell them to steer clear of human affairs and keep the generator station from being blown up. Of course in real life general intelligence will lead to a superintelligence explosion and then we'd all die, but that's a topic for another day.
What would happen if SLS explodes during the next green run? How big would the explosion be? Would any reporters die?
>>12748626>MAGIC MACHIIIIIIIIIINEEEEEEEEEEEEEEEEES
>>12748628No people would be at risk, but it would cause a merciful euthanasia of the program. I can almost hear the 1970s shuttle hardware calling out now...>...kill...me...kill...me...
>>12748631>look mom, I refuted a point by posting a "u are silly" face!
>>12748628Probably not but it would likely be large enough to rival the N1.>>12748623Ah sorry I meant pessimistic. Remember the old days where humans going to Mars in the 2030’s was optimistic? And a manned mars base by the 2060’s was the norm? Crazy.>>12748626To paraphrase Robert Zubrin, terraforming is NOT a meme, but our current methods are shit and will never work.
>>12748501>people still believe in the AI religion in 2021
>>12748639Absolutely seething
>>12748639That's the absolute maximum effort required to 'refute' solving a supply problem with "lol AI".
>>12748514>How do they profit from doing it?They have a place to fucking live at 1g. > The void is cruel, there's nothing there. Wrong. Asteroids have plenty of minerals and ice.> I love space habitats as much as the next guy but planetary surfaces are where it's at. Have fun being a fucking deformed weirdo
>>12748641I think SpaceX has a 60% chance of reaching mars in 2029 with humans. I'm guessing they'll reach mars with cargo for the first time in 2024.
>>12748641We just need a 100% CFC atmosphere. I wonder...would it burn my skin?
>>12748644If you actually bothered to do even the smallest amount of formal research into the field of AI safety you would realize that the development of artificial general intelligence would be the scariest fucking thing imaginable. Coming in here and s0ifacing at me and calling the field a religion is about in the same vein as someone coming in here and laughing at us because space is fake and it's all cgi. Go watch a couple of Robert Miles videos or read Superintelligence by Nick Bostrom.
>>12748653No but it can definitely kill you in high enough concentrations.>According to their material safety data sheets, CFCs and HCFCs are colorless, volatile, non-toxic liquids and gases with a faintly sweet ethereal odor. Overexposure at concentrations of 11% or more may cause dizziness, loss of concentration, central nervous system depression or cardiac arrhythmia. Vapors displace air and can cause asphyxiation in confined spaces. Although non-flammable, their combustion products include hydrofluoric acid, and related species.[47] Normal occupational exposure is rated at 0.07% and does not pose any serious health risks.[48]
>>12748326>Should we be worried, then, that the NASA OIG continues to report that the MSFC software team can’t get their act together and that the SLS still doesn’t have either a complete flight software stack or any kind of integrated test environment?Holy fuck I forgot about this. Artemis I is a ticking bomb.
>>12748660>the field of AI safetyThis "field" is a grant grift. They invent things to be scared of then demand we pay the to waffle on about the Terminator movies.
>>12748663I wasnt thinking of breathing it, but if you had 1atm of pressure and the air 100% CFCs , assuming it was warm enough to survive with just oxygen (no suit), I wonder what would happen
>>12748651Please explain how to build an O’Neil cylinder on the next 20 years using vehicles that currently exist or are in development.
>>12748651That we must have 1 G is unsubstantiated and there's no way to assert one side or the other. All we know is that 0 G is really bad. Anyway, there is some useful analogy for space by looking at the ocean. How many cities do you see that exist on artificial, manmade floating structures in the middle of nowhere? Material resources are everything. And yes that includes asteroids. >>12748645Using the usual "reaction face/seethe/rent free" combo is no way to have a constructive discussion, anon. Perhaps I may interest you in a nice 'please tell me why you disagree'?
>>12748681Faggot. You are responding to the wrong person. Your embarrassing category error was pointed out here >>12748650
>>12748660>you would realize that the development of artificial general intelligence would be the scariest fucking thing imaginable.Sure, and Cthulhu coming out of the ocean would also be very bad, but I don’t really consider either of those scenarios plausible. If an AGI did exist, I’m pretty confident we’d just kill it, but in merit to your concerns, I’d be happy to join in killing anyone who is trying to develop AGI.
We. Are. Going.
>>12748701To. Terraform. Zubrin's. Scalp.
>>12748701>Zubrin has a book titled “Merchant of Dispair”Wtf. Based Zubrin?
>>12748704why would u desecrate the man
>>12748668The concern over AI safety does not have any bearing on what is currently defined as "artificial intelligence" today. Self driving cars, facial recognition, autonomous weapons, these technologies involve agents whose problem solving skills are extremely tight and the ramifications of different AI safety concerns on those technologies range from "trolley problem" to "military ethics dilemma" to "occupational safety concern" territory. Comparatively pedestrian consequences wherein people are still principally at the helm. The real scary shit is in general AI, and it's thought that the first emergence of general intelligence will require concerted effort and devotion of resources on the order of the manhattan project to accomplish. Such an agent will have been created with some terminal goal to accomplish, and as a result of instrumental goals needed to ensure the terminal goal is reached (such as stay alive, don't let them change what you want, get smarter to avoid being turned off etc.) is where the real problems are.
>>12748675>Please explain how to build an O’Neil cylinder on the next 20 years using vehicles that currently exist or are in development.Use Starships to launch a few thousand tons of building materials up and weld them together into a big tube, then get the tube spinning using RCS and fill it with air.
>>12748697yeah a terrorist attack on DeepMind or OpenAI's office building is definitely going to prevent the field from ever creating an AGI, wonderful strategy
>>12748687Ha ha oof
@4:50 in this vid of the static fire https://youtu.be/XE9K3W0ojjkhave you ever seen the flaps venting before? this is the first time I've seen it. the whole seem is out gassing
>>12748681>That we must have 1 G is unsubstantiated and there's no way to assert one side or the otherMay not need it but I’d sure prefer it because I don’t want to look like a fucked up skeleton.> Anyway, there is some useful analogy for space by looking at the ocean. How many cities do you see that exist on artificial, manmade floating structures in the middle of nowhere? Material resources are everything. And yes that includes asteroids. You mean the material resources easily accessible to any O’Neill cylinder orbiting an asteroid or moon?
>>12748710Lmao this is some goofy shit
>>12748713>yeah a terrorist attack on DeepMind or OpenAI's office building is definitely going to prevent the field from ever creating an AGI, wonderful strategyYes.
>>12748710this is hilarious
>>12748709Yes, exactly. It's a 'field' that bloviates on about speculative technology that is largely undefined and has never been hinted at being possible.
>>12748710that wouldn't be an o'neil cylinder though. that'd be a rotating tube in space. an o'neil cylinder is a specific design that is like 30 kilometers long and 9 kilometers wide i think
>>12748326>Is this unique to NASA? No, but it’s on brand for BoeingThat's gotta hurt
>>12748723>>12748725Works for building Starships
>>12748714>Ha ha oof
>>12748718Building an O'Neill cylinder in orbit of a moon is like building a coastal city on barges twenty miles off of saifmd coast. Why not just build a big gravitron on the lunar surface if you're such a ninny about gravity? And labor is quickly being automated away. As much as the idea of a "coal town" o'neill cylinder being set up around a ten kilometer asteroid seems cool, you won't need that many people.
>>12746587How does Starship land if one engine fails during the flip? Isn’t the “top engine” off axis with the two “bottom engines?”
>>12748729Well whatever. You can upgrade the size later by just encasing the first cylinder in a bigger one, then removing the inner walls.
>>12748744>Building an O'Neill cylinder in orbit of a moon is like building a coastal city on barges twenty miles off of saifmd coastExcept living on the coast causes your bones to rot
>>12748706Sometimes it takes one to know one
>>12748757Bro even if living in low gravity cuts a decade off your life, so what? Your kids will be adapted to it.
>>12748764>chad rotating habitat humans who have healthy, normal proportions VS virgin surface humans who have gross, skinny long limbs and bulging eyeballs
>>12748764>Your kids will be adapted to itthat's not how evolution works
>>12748767Rotating habitats won’t be at 1 g. Most will be 0.3-0.5 g in order to help them interact with Martians/Lunarites. You’re delusional if you think we’ll have a large scale rotating habitat before we have thousands of people on mars
>>12748628It would be good for the space program probably
>>12748772>Rotating habitats won’t be at 1 g.Yes they will> Most will be 0.3-0.5 g in order to help them interact with Martians/LunaritesThey can keep their disgusting, defective bodies in one of the outer layers where the gravity is lower Or ideally be exterminated
>>12746587Elon:>”One of the engines is suspect, so we’re swapping it out”
>>12748787what is your proof lower then 1g will cause horrific health defects?
>>12748796Chud
>>12748790AAAAAAAAAAAAAAAAAAHHHHAAAAAAAAAAAAHAAAAAAAAAAAAAHAAAAAAAHAAAAAAAAAAAAAAA SPACEX STANS ABSOLUTELY POSITIVELY FOREVER AND ETERNALLY BLOWN THE FUUUUUUCK OUT
>>12748790SUS
>>12748728It's extremely rigidly defined, in fact that's one of the reasons it's so difficult a problen to tackle. Using basic reasoning it is possible to arrive at the path of action which a sufficiently intelligent agent would follow to maximize utility or chance of success. Such problems are already faced in the real world with human inteligence but they're not so consequential because humans are only so smart. For instance, the "Volkswagon emissions test" effect is one such concern for AI safety.Picture an agent whose job it is to pick up stray rocks in a park to keep the paths clean. The designers give it a reward function that it will earn one point for each rock it collects, and a goal of maximizing the number of points. Before it is released into the actual park the designers place it into a simulated park, to test and make sure that it'll behave okay. Specifically they're worried it'll try to game its reward function by just moving to the many gravel planters in the park and picking up thousands of bits of pebbles to skyrocket its reward function. What the designers are expecting, is to catch this pebble collecting behavior in the simulation so that they might modify the reward function to only give points for moving larger rocks, or to do other such fixes if necessary. But the agent is intelligent, and realizes that if it plays nice in the simulation it can be released with its original unmolested goals. In fact the agent realizes that having its goals changed at all will likely result in fewer points than the current pebble hoarding goal it has. By collecting the few big rocks in the testing environment it will be released with its pebble-hoarding behavior intact, and thus have a vastly higher future reward than if it immediately went for the pebbles in the test and got its goals molested. Such a scenario shows how a sufficiently intelligent agent may resort to deception to avoid having its goals or behavior modified (i.e. fixed).
>>12748757Did you not hear me? Build a gravitron on the surface. You can get 40 Gs if your panties are so in a twist about it. Expending 2 km/s just to go to work is retarded.
>>12748810
>>12748814>live in an amusement park ride That’s dumb
In the event that Artemis 1 shits the bed during an early stage of flight, would the hot debris/gas from blowing up the SRBs prevent a safe abort? I remember the Air Force got all up in arms over launching crews on Ares 1 for similar reasons.
Bill Nelson should have fucking died on the shuttle, we were so fucking close
>>12748831Imagine your parachute passing through this
>>12748850>That burning cloud of NTOContemplate the aroma.
>>12748790>When the engine is sus!Zoomers, get on it.
>>12748850I'm not scared of a little smoke. you sls alarmists should grow a pair.
>>12748823>live in an amusement park ride on the surface>that's dumb>live in a massive amusement part ride in LLO>WAOW HOLY B-B-BASED!
>>12748862
>>12748880This jerma meme has gone too far
>>12748880Not what I expected, but still pretty good.Was hoping for Elon with the same face distortion as the original pic.
>>12748757>Source: Dude trust me
>>12748886>my bones won’t be weaker if gravity is weaker haha Anon do you know why your body even develops muscles and bones
>>12748883there is no sound economic basis for reusable jerma
>>12748864It's not just the smoke, it's the super hot chunks of flaming debrisvid related of titan iv launch aborthttps://youtu.be/ZFeZkrRE9wI?t=21
>>12748899Didn’t they literally find someone’s heart after one of the shuttle explosions?
>>12748790
>>12748790How long does that add to the hop?
>>12748941six months
>>12748790Raptors seem like complete shit. Like half of the delays and all of the failures in Starship program have been because of those shit engines.
>>12748941till about Q2 2021, but it will be Q3 bc the second static fire will kill the other engines
>>12748957Even Tom Mueller came out on twitter to say it will take a long time before Raptor is reliable
>>12748957it's the first FFSC engine to fly, ever – and still less troublesome than early RS-25s
>>12748941its fake
>>12748971>Already comparing Starship to shuttleOH NO NO NO NO
>>12748978no
What would a tank look like on Mars?
>>12748980The first orbital Starship will burn up over Texas for all to see, Columbia style. The cause of the accident will be traced back to a heat shield failure at the flap hinge. Musk will call it a "mostly successful flight" and launch the next SN within a month. Screenshot this post.
>>12748999fucking had to be trips
>>12748989where it the tweet then?
>>12748999Checked and Hack-Fraud Muskpilled
>>12749009uh
>>12748941Q2 2120
>>12749010It's not really "Musk is a fraud" so much as "I have no idea how they'll seal the flap hinges and don't expect them to get it right on the first try"
>>12749023they will seal with gas venting
What is anons opinion on fraser cain / universe today?
>>12749009>>12748978On Musk's Twitter? It's not fake
>>12749059Yeah didn't realize it was a reply
>>12749049he taught me about Nautilus array and i thank him for that
So...what are they really building out there?
Looks like the suspect Raptor may have already been replaced - I say this based on the scissor lift being used which is what is utilized when fitting engines. Also at least one boom lift seen, might even be two. Hard to make out much on the LabPadre Launch Pad Cam but take a look at around 12am (old Raptor removed?) and around 2am local time (replacement Raptor fitted?) but generally speaking there's various things taking place between those times:https://www.youtube.com/watch?v=qCbgoqMcirIit's a pity that the camera wasn't zoomed in more because it's hard to make out much in the dark with the current view.Does the FAA need to be involved due to the Raptor replacement?
>>12748326>This one digs into the archives but NASA spent months installing a new friction stir welding machine only to discover that some subcontractor hadn’t reinforced the floor, causing the machine to break and need to be rebuilt from the ground up. >Two years later the welding machine broke again.Fucking lmao
>>12749079copy pasting reddit comments
https://twitter.com/elonmusk/status/1364488368994848769?s=19bros...this is based
>>12746587i love robert zubrin
>>12748663>Overexposure at concentrations of 11% or more may cause dizziness, loss of concentration, central nervous system depression or cardiac arrhythmia. Vapors displace air and can cause asphyxiation in confined spaces.So basically the same as any oxygen displacement gas. Except for the HF bit, so don't burn them. But the idea is not to breathe it, just to not need a pressure suit.>>12748660The real fear I have about AI is that people would think it's smarter than it is, and put it in control of shit. Then it glitches out and something breaks. So far AI has been more like artificial autism. Face recognition is cramming stuff into a neuron box that tries to do some holistic all at once shit with strange holes in perception.Genuine conscious AI would be more likely to have psychological problems than not.
>>12749118How would that even work? Both Starship and Super Heavy flying to the platform separately? Or in one go? If the objective of off-shore launches is noise, do you use only a fraction of engines for that short hop to the platform? Would be interesting to see
>>12748608very carefully
>>12748620hoping a US-China cold war get us some kino flag and footprint missions to the jovian system in my lifetime
>>12748462it just keeps getting worse too>the moon is a harsh mistress is not an instruction manual>WHAT>ABOUT>VENUSI'm dying
>>12748260Too fucking dumb to understand fair use, so he makes a 20 minute video.
>>12748471He's very obviously a Democrat. His opinions have a political sense horizon.
>>12748599Steal it from Russia. Give the CIA something useful to do for the first time in 30 years.
>>12749154he loves you too, mini starship
>>12748787gravity gets heavier as you go outwardsas a side note, we are increasing the spincomplaints will be heard on the lowest level
>>12749118I don't buy "we'll fly them there lole" at all. This is in the category of Elon's projections where the conventional answer (just put it on a barge) is better in every way - economics, risk, etc. - and will probably win out in the end.
>>12749344If starship achieves the launch cadence and reliability its supposed to, I don't see why it'd be an issue, but that's at least 10 years from now, the first ones will 100% be moved by barge.
>>12749079Apparently the FAA considers it a new vehicle ones engines are swapped, so yes, they’ll probably have to issue another flight permit
>>12748326>"Wow! This is not a blog that is easily summarized."Here, let me help - Fuck SLS
Why is Münley such a fucking faggot on twitter?
>>12748790I wonder if this is SN39 or one of the newer engines. Further, I wonder what exactly “suspect” means. Doesn’t seem to imply damage as has happened in the past, and the SF looked pretty nominal.
>>12749118No way>>12748790KEK see >>12747320
>>12749364This shit is disgusting. I guarantee you they won't be going to Mars because a) we will need a fertile society where everyone is having children, and b) you have to be mentally sound to go to Mars. This is a mental illness
>>12748745They have a pretty huge gimble range >>12748371Pretty sweet anon
>>12748371I imagine that'd roast some crew.
>>12748371
>>12747997will he apologise?https://www.youtube.com/watch?v=T_MYyc-PtH4
>>12748371https://exosaero.com/someone already stole your space company.
>>12749397>it's another sub-orbital cubesat yeeteri want in on this grant farming. who wants to start a mini blue origin with me? uk based so no competition.
>>12749238I’d imagine separately . Though I guess it would be possible to launch both, stage, and land individually.>>12749108At this point the best thing SLS can do is provide a once in a century autopsy on how not to run a project. These flaws are surely found elsewhere too. If the lessons from SLS are seriously studied and incorporated the project will have actually done some serious good. Not going to happen, of course. There are no more Feynmans left in our institutions.>>12749364He’s a rich white lib who works for a dystopian megacorp that runs on slave labor. No shit he’s terrible. Frankly, this woke shit is on some level just a means for the privileged to placate their own guilty consciences. It’s mainly rich whites for a reasonGood content tho
>>12749371>not being bisexual
>>12747901They were all RS-25s
>>12747967>being against covid is a bad thingok
>>12747073>RS-25More like "Boldly Slowing"
>>12746591
>>12749425The KSP version of it is ironically the best thruster
>>12749443It's a sustainer engine, not a main thruster for a first stage.
>>12749425>>12747073> a single launch costs almost 2 billion in disposable engines alone.
>>12749445"sustainer engine" is just a cope word for "main thruster for the first stage (but the thrust is shit)"
>>12749461lmao
>>12749461Partially correct. TWR is absolute dogshit and you're lugging around the most uselessly huge constructions since the original Xbox controller.
>>12749451Isn’t that the cost to launch a whole expendable Falcon Heavy?
>>12749464That controller was based as hell. Fit the palms nicely
>>12749461more like memer engine
>>12749465Yes, 2 billion.Minus 1.85 billion
>>12749344>>12749357just fly them there is not going to happen. screencap this
>>12749464>>12749461It’s a terrible 1st stage choice, but I think it is pretty cool how long shit like the delta 4 heavy burns. It’s one reason i want to see the SLS fly. Isn’t it going to run for like 8 minutes or something insane?
>>12749422it isI'm pro-covid
>>12749479It's like the COPD Paralympics for rockets. Wheezing lung patients into orbit.Well, I suppose that has its draw.
>>12749479>Isn’t it going to run for like 8 minutes or something insane?well, not on the test stand lmao
>>12749479>Isn’t it going to run for like 8 minutes or somethingUhhh, is it supposed to? Yes (It's supposed to burn all the way to space, halfway to GTO). Will it? Probably not kek. One of the engines shit itself during testing
>>12749494>One of the engines shit itself during testingthats not what really happened
any of you do rocketry as a hobby? launching or building motors of whatever? how did/do you get into it?
>>12749408This paragraph really hits home>What sort of program do we deserve if we let non-technical political leaders force scientifically wrong decisions for decades? Lysenko? Great Leap Forward? Another Challenger? Another Columbia? Consequence-free profiteering at public expense by major aerospace contractors? America could easily tip towards a USSR-style future.
You've heard of dolphin sex, but what about rim job?
>TFW living the dream working as a rocket scientist studying radiation effects on electronicsIt's actually pretty retarded, The old ass studies on old cold war era electronics hasn't actually been followed up and is just taken as gospel. hundreds of Cube-Sats have been launched into space in recent years using purely commercial electronics instead of expensive as fuck radiation hardened parts. commercial stuff has shrunk so much you can just use quintuple redundancy and still be cheaper than using a 10,000 dollar rad-hard transistor once. It's dumb though that my research and probably a couple others in the last year or two is only now being conducted to prove for industrial and government level projects what university cube sats are already showing.
>>12748371>4620 m/s of delta V with a nuclear thermal propulsion systemOof, may as well just use methalox chemical propellants my dude, it'll get you 5500 m/s easily and not neutron activation products to worry about. Hydrogen is truly a meme.
>>12749461Kek
>>12748487The first space structure resembling an O'Neil cylinder will be built in the vicinity of Phobos, using materials mined from Phobos. Mark my words. We will probably see some rotating space habitats/factories first, and they'll be big compared to the ISS, but small compared to an actual habitat bottle.
>>12748494Some retard faggots think we are going to build a south polar Moon base and then move on to constructing O'Neill habitats at the Earth-Moon lagrange points immediately afterwards. Obviously they are mistaken.
>>12749451Is that number only for the 4 engines under the orange (tank bad)?Have they published the cost of the SRBs?>>12749474I think he meant the cost of the engines, but kek
>>12749547Based, where are you? This is very interesting and everybody in the industry somehow already knows this but refuses to accept. Though using five moderns CPUs would be pretty energy-intensive, even if a much better option. We really needed to review all cubesat info to get a good timeline on CPU lifetimes for stuff with high TRL (eg. CubeComputer and similars)
>>12749469Only manlets had trouble holding Duke.
>>12749569>>12749547braintlet question: does radiation just immediately fuck consumer electronics or does it degrade them faster over time?iwanttoknowmore.gif
>>12749571So many hours sunk into mastering the duke while playing halo CE with my friends in middle school. This is autistically specific but everyone wore polo blue cologne back then, and whenever I smell it to this day I associate it with the original Xbox and Halo in particular
>>12749569CSA, NRSC project. The issue is that university and private cube-sats don't really have any documentation on their post mission component status so gotta do the research from scratch which as you can imagine, characterizing all the possible electronic components again like they did in the 60s is expensive as fuck so I'm not too shocked it hasnt happened till now but yea. will involve basically purchasing a shit load of each component type from various manufacturers and subjecting all these modern electronics to the same radiation tests as before (proton beam testing for single event stuff and Co-60 gamma testing for TID). The hypothesis is that well we should see that some of these modern parts actually perform decently enough or fail consistently that you can use redundancy to account for failure.Think of Percy which just landed and has like 128 MB flash drive. that rad-hardened drive probably cost like 25,000 dollars. Imagine if they RAID setup like 10 modern flash drives for 1,000 instead and used the RAID to do a majority check for each bit. literally cheaper than the 90s era rad-hard flash they use.
>>12749576Depends on the radiation/where your mission is located really. Some highly-charged particles can wreck present-day CPUs because they are smaller: if your transistor is just the size of a few particles, a single charged particle can do a lot more damage than if you were using an older process and your transistor was the size of a few hundreds particle.See: https://arstechnica.com/science/2019/11/space-grade-cpus-how-do-you-send-more-computing-power-into-space/
>>12748506Expanse started off right at the outer edge of what I would consider an interesting setting (magic propulsion but hey at least it's still real physics/orbital mechanics for the most part), and then went right off the fucking deep end with the alien goop and the wormholes. Fuck that shit, and you're correct, the best space setting is one where we have high energy propulsion (10 cm/s^2 acceleration fusion spacecraft, plasma magnet sails) but space travel is not so easy as "just point and burn at 5m/s^2 for a week and arrive at the destination 30 AU away lmao". Going to the Moon and Mars can be routine, going to Jupiter should be a notable and risky trip, going to Saturn should be impressive, and going out further should be an exceptional event. Ground-level infrastructure (especially industry) should be the most valuable thing and jealously guarded by the dominant factions. Rather than magic cure-all medicine, engineering solutions and radiation dose management and acceptable risk should be the in-universe state of things. Also, no massive grand-scale solar system wide political schemes or movements, make things messy and complicated and difficult for everyone. The first free colonies should be basically Alaskan homesteaders with a "don't tread on me" attitude, maybe they decide to stop following orders from Earth because Earth scientists keep telling them not to dig here or there because they may disturb some ancient evidence of past life, meanwhile these people are trying to produce enough resources to build better lives for their kids and could not care less about some Mars bugs. Anyway you get what I'm saying here.
>>12749543Pretty cute desu
>>12749576Bit of both, theres two different failure modes. Single event errors are where some energetic as fuck random ass particle just smashes into your component and fucks shit up (say flipping a bit in your memory). while over time radiation will also add charge to your component through ionization. this charge degrades stuff like transistors since they need a charge gradient to function. Commercial stuff that was tested historically in the 60s-80s showed it failed quicker in both cases than special radiation-hardened parts but modern University cubesats are now using commercial parts due to budget reasons (cant afford to use 5000 dollar transistors over 20 dollar ones) so theres lots of evidence that as we shrunk the components and improved quality control during their manufacturing that they may now function well enough to just use redundancy to mitigate the higher risk of failure.
ESA putting together a mission to explore lunar caves? LMAO the lander is gonna crash
>>12749566>I think he meant the cost of the engines, but kekAh fuck, you’re right >>12749465Yes, FH costs 150 mil in expendable mode. Around the price of a single SLS engine.
>>12749600ESA is not Israel spreading tardigrades on lunar surface
>>12749595>>12749586so as we go forward and launch costs drop the people selling these specialised hardened components are basically snakeoil salesmen (unless what you're launching is critical, but i'm talking amateur hour for fun stuff, like a 4ass cubesat).
>>12749465So?NASA demands the highest performance and safety margins and only the SLS - the safest most powerful rocket ever designed can offer them.Why, you ask?Because NASA wants to explore Deep Space. And you can't do it with feeble low-earth orbit toy rocket. You need something massive, and powerful. And reliable. And all that, it comes at a price.Take it, or leave it.Space is hard, and waits for no one.
>>12749584That'd be the fucking dream, yeah. Launching a crazily big mission with 4x redundancy just to test longevity would still be pretty expensive though, but I really want to test that someday. You are doing god's work anon, keep it up.I must ask this as somebody from a shit country: in here the military will test some components with Co-60, but won't have a good proton source due to lack of good accelerators, however they just don't want to publish their results. The overall feeling is that "they won't publish their tests, why should we publish ours and do their work for free?" so these results are locked away and only become available 15+ years later or so, either when the components are being sunset or on missions hoping to pigback on the "flight heritage" of older components, even when they turn out to not be that good.I know of a test using old 2N2222A transistors, but it's in portuguese, and did the testing so long ago, but decided to publish so that the civilian sector would change over.
>>12749108Anons have been sharing that trivia for a long time on /sfg/.
>>12748514>How do they profit from doing it? The first rotating habitats won't really be habitats, they'll be factories. Doing resource extraction shit in zero G is an insane hassle and can be avoided completely if you just load your raw materials into a big centrifuge which contains all your crushers and sifters and leech beds and so on. If you are a space colony on a low gravity planet with a conveniently close but inconveniently low-gravity moon right above your head (ie, if you are on Mars), then building a spinning factory station next to that moon makes sense (because it lets you do anything you want to do in orbit without needing to launch bulk amounts of basalt fiber/steel/aluminum/whatever from the planet itself, meaning your valuable propellant production can get more leverage by only launching the really high cost/rare/complex stuff (microchips, machines, people).>What resources or power do they gain? Rent from inhabitants? Like I said, they work like an offshore colony next to an island that is loaded with resources but inconvenient to live on. Think giant oil platform city next to medium sized island loaded with ores and things but toxic soil or something.>How do those people get their living? They work in the factories turning asteroid mush into useful products. >The void is cruel, there's nothing there. Except for billions of free floating objects with gravity way too low to directly colonize or industrialize. Learning how to build and live in rotating habitat things around Mars will allow us to colonize the asteroid belt as a direct next step.>I love space habitats as much as the next guy but planetary surfaces are where it's at. There's simply not nothing on planets and moons and stuff.Planetary surfaces are definitely the best thing to colonize at our current level. We simply don't have the experience doing industry in orbit. However, we WILL learn to do that eventually around Mars, because Mars has its little moons.
>>12748599Why do you need uranium. Also, uranium is common everywhere that silicate rocks exist.
>>12749608Your shitpost reminded me that I’m actually pretty terrified of this thing killing astronauts. God that’s be a huge setback. Well, I guess we’ll see how it does with Artemis 1. But really modern Boeing shouldn’t be touching anything with humans on it. Hickman is right in that it should be used for cargo alone.
>>12749605Yea basically any university or amateur level cube sat being launched through nanoracks or something similar right now is using commercial grade stuff with maybe like the main CPU being a low level rad-hard component if you can afford it. Now if the space industry was actually booming than the Rad-hard components could actually be produced at industrial scale but that wont happen for decades. once that happens than the rad-hard stuff would be like 100 bucks vs 10 bucks instead of 5000 but we're in the transitional period where its worth more to research using commercial grade with redundancy.
>>12749605They are less snake-oil because there's an actual trade-off to be made here. Using 4 modern CPUs simply takes 4 times the mass and 4 times de energy needed to run a single good one, we're just banking on doing that high level of redundancy being cheaper overall than buying the actually "high-quality" component, of course losing a lot of computing in the process.Think about eating one of those fancy french meals: the portions are laughably small, but the food is generally pretty good, however it is cheaper, and you'll eat more if you just buy 4 Big Macs. The downside of course is that you're eating cancer and might not be as tasty.
>>12749629Excellent comparison. Add in the fact that historically space projects involve the government and when you tell the government that "hey we have a 1 in 8 chance of a component failing so we want to use 8 of them" they rather go "WHAT FAILURE NO THIS PROJECT COSTS A BILLION DOLLARS" and demanded that component have a 1 in a million chance of failure even if the end result is the same and now you spent a shit load more money, at least in the governments eyes their fancy space mission is guaranteed to work now.
>>12749629>4 cpus = 4times energy consumption and 4 times massNo. The rovers for example use ancient power cpu's that are neither energy efficient nor powerful. Certainly not 1:1 to equally massing and power hungry modern equivalents, if any exist.Aka obsolete electronics.
>>12748612Plasma magnet sails get you to Saturn in less than 4 months at top speed, but you can't slow down. To be able to capture at Saturn you need to slow down inside Saturn's magnetosphere using your drag device before popping out the other side, meaning you need to arrive slower. You could probably get away with a 2 year transfer to Saturn this way. You'd need chemical propulsion to get elliptical enough to encounter the Moon and escape Earth, then you turn on your sail and ride the solar wind up to cruising speed after a few hours of accelerating, then once you enter Saturn's magnetic bubble you turn the sail back on and capture.The biggest issue then is just how you're gonna get back to Earth, since plasma magnet sails can't accelerate you towards the Sun, and without them it's a minimum of 6 years coasting towards Earth in a Hohmann transfer orbit. If the first thing you sent to Saturn was some kind of particle beam emitter then you could use it to launch yourself back to the inner solar system using your magnetic sail in the particle stream, but that's a complicating step on its own, since your particle beam array is going to need to include everything from power supply to actually producing the particles in-situ from available resources. Probably not something that's going to happen with a single unmanned mission.
>>12748790amogus
>>12749414Ew
>>12749641Plasma magnet sails look stupid so no they’re not allowed in the Kino
>>12749641Imagine going back to Earth when you have both Enceladus and Titan in your back yard. Terrans, they'll never learn
>>12749641>needing meme sails when starships with some nig rigging puts you on Titan in ~1.5y.
>>12749639They are by no means equivalent, I think that I'll look into it later and see the tradeoff of using a single BAE RAD 750 vs 4 Snapdragons 888. Certainly interesting.
>>12748810It's literally the same thing that humans do, they play nice and civilized when they are subject to some kind of authoritative control (ie no rapey or you go to time out), but when in private/outside of the range of punishment we instantly default to our intrinsic goal-seeking behavior (for example, pretending you never look at porn on the family desktop computer as a horny 11 year old in order to ensure that your access to the computer is never restricted and you can keep blasting prepubescent loads to pictures of lindsay lohan in a shirt that shows her belly)
>>12749364shoo shoo, into the airlock non-breeder
>>12749443Yeah because the devs didn't understand how SLS works. The Ksp version of the SLS boosters are hilariously underpowered and the Ksp version of the RS-25 gets way too much thrust (when scaled relative to the boosters and to the other engines in Ksp).
>>12749480based lol
new thread needed
>>12749704>only page 10nigger
>>12749712we'll never make page 11. abort.
>he thinks 4chan is flat and you just fall off the edge if the thread goes long enoughhahah what a fucking primitive, everyone knows you just wrap around to page 1
>>12749722Based geodesic imageboards
>>12749668That'll be a fun comparisonhere's the first variable: RAD-750: $300,000Snapdragon: $200
>>12749739We still remember Phobos-Grunt anon, redundancy isn't always magic and sure to work. The 888 might as well crumble upon a single proton and we wouldn't know it until it was on orbit.
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>>12746772The Armstrong limit is the lowest the body can be exposed to without dying, regardless of having oxygen available . It's about 6% Earth atmosphere, which is 10x more than on Mars.You could fill an open cave with a heavy gas like SF6 and that would get you a safe enough pressure 500m down or so. Then a person could walk around with breathing kit and cold weather gear.
>>12749804>SF6What is the benefit of swapping out an atom of Uranium? Affordability?
