RealKerbal3x Posted October 31, 2021 Share Posted October 31, 2021 1 minute ago, Beccab said: I wonder if we will ever see the transpirational cooling shield make a return, the ceramic heat shield seems to be quite good for starship already I doubt it, it certainly feels like something that goes against Elon's 'delete the process, delete the part' engineering philosophy. Passive solutions are usually better than active solutions. Back when it was being considered, I remember hearing about clogged pores being a potential issue. The whole thing sounds immensely complex and high risk to me. Quote Link to comment Share on other sites More sharing options...
Meecrob Posted October 31, 2021 Share Posted October 31, 2021 5 minutes ago, RealKerbal3x said: I doubt it, it certainly feels like something that goes against Elon's 'delete the process, delete the part' engineering philosophy. Passive solutions are usually better than active solutions. Back when it was being considered, I remember hearing about clogged pores being a potential issue. The whole thing sounds immensely complex and high risk to me. It requires tankering fuel. Compounds that are good for use as a heatshield are low density, lower than fuel, so I don't think they even got to the discussion of how do they even implement it. I know Elon has said something about not improving stupid designs... Quote Link to comment Share on other sites More sharing options...
Beccab Posted October 31, 2021 Share Posted October 31, 2021 Quote Link to comment Share on other sites More sharing options...
Beccab Posted November 1, 2021 Share Posted November 1, 2021 On 10/23/2021 at 3:36 PM, Minmus Taster said: Hey! It's MY job to show TDH comics >:( /j @Minmus Tasterfight me Quote Link to comment Share on other sites More sharing options...
Jack White Posted November 1, 2021 Share Posted November 1, 2021 (edited) Due to unfavorable weather conditions, NASA postponed the launch of the third SpaceX mission with a crew. The launch was originally scheduled for October 31 at 2:21 AM ET, but has now been pushed back to November 3 at 1:10 AM. NASA hopes that this transfer will be the last for the mission - according to forecasters, on the night of November 3, the weather will be favorable with a probability of 80%. The SpaceX Falcon 9 rocket will be launched from pad 39A at the Kennedy Space Center in Florida. The live broadcast will begin a few hours earlier - on November 2 at 20:45. Crew Dragon Endurance will include Commander Raja Chari, pilot Tom Marshburn, astronauts Kayla Barron and Matthias Maurer from Germany. Until the start, they will stay at Kennedy Center with their families. The docking of the Crew-3 mission spacecraft with the ISS is scheduled for 23:00 on November 3. The crew will stay in orbit with a scientific mission for approximately six months and will return to Earth in April. SpaceX manned launches are still relatively rare. The Crew-1 mission was launched in November 2020, Crew-2 had to wait in the wings until April 2021. After the civilian mission Inspiration4, the company started thinking about increasing the number of Crew Dragon ships. Edited November 1, 2021 by Jack White Quote Link to comment Share on other sites More sharing options...
Minmus Taster Posted November 1, 2021 Share Posted November 1, 2021 5 hours ago, Beccab said: @Minmus Tasterfight me Your on >:) Quote Link to comment Share on other sites More sharing options...
MKI Posted November 1, 2021 Share Posted November 1, 2021 22 hours ago, Beccab said: I wonder if we will ever see the transpirational cooling shield make a return, the ceramic heat shield seems to be quite good for starship already To go in the opposite direction, and following the path of "the best part is no part" thinking. How far can you take a Starship with no tiling? Could point to point work with no tiling? Or what about just less tiling? Or what about a vastly simplified version of the transpirational cooling? I think if there is a "simple" way to vent fuel to the surface reliably, it might be better than fragile shielding, at least in the long run. As technically fuel isn't a "part". Quote Link to comment Share on other sites More sharing options...
wumpus Posted November 1, 2021 Share Posted November 1, 2021 16 minutes ago, MKI said: To go in the opposite direction, and following the path of "the best part is no part" thinking. How far can you take a Starship with no tiling? Could point to point work with no tiling? Or what about just less tiling? Or what about a vastly simplified version of the transpirational cooling? I think if there is a "simple" way to vent fuel to the surface reliably, it might be better than fragile shielding, at least in the long run. As technically fuel isn't a "part". I'd like to assume that "how far can you take a booster without tiles" is roughly the delta-v supplied by the booster. This doesn't seem to be the case, but this may be due to lack of initial resources (nearly all being spent on Starship), and that booster 2.0 will have more of Starships tricks to bleed delta-v in "skydive" mode. As far as I know, both the [resusable] Falcon 9 booster and the Starship booster (whatever its name of the moment is) don't provide much more than 1/4th the delta-v to orbit. This *might* be optimal, but considering they both use raptor engines you'd expect the optimal solution to be closer to half. Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted November 1, 2021 Share Posted November 1, 2021 (edited) 1 hour ago, MKI said: Or what about a vastly simplified version of the transpirational cooling? Spoiler "Tower, it's Starship, requesting permission to land!" Touchdowm. Scale it up. Edited November 1, 2021 by kerbiloid Quote Link to comment Share on other sites More sharing options...
Codraroll Posted November 1, 2021 Share Posted November 1, 2021 9 minutes ago, kerbiloid said: Hide contents "Tower, it's Starship, requesting permission to land!" Touchdowm. Scale it up. Obligatory: Quote Link to comment Share on other sites More sharing options...
Beccab Posted November 1, 2021 Share Posted November 1, 2021 (edited) Edit: Gateway to Mars is on youtube, finally Edited November 1, 2021 by Beccab Quote Link to comment Share on other sites More sharing options...
AtomicTech Posted November 1, 2021 Share Posted November 1, 2021 1 hour ago, Codraroll said: Obligatory: @adsii1970 do we have a post of the month thingy? Quote Link to comment Share on other sites More sharing options...
cubinator Posted November 2, 2021 Share Posted November 2, 2021 Crew-3 has slipped to Nov. 6th at 11:36 PM EDT Quote Link to comment Share on other sites More sharing options...
AtomicTech Posted November 2, 2021 Share Posted November 2, 2021 Dang it! Quote Link to comment Share on other sites More sharing options...
Meecrob Posted November 2, 2021 Share Posted November 2, 2021 Not much info yet, but reports are a medical issue, with NASA saying the following: "The issue was “not a medical emergency and not related to COVID-19,” but the space agency declined to elaborate on the nature of the problem or say which astronaut was involved." So my throwaway joke bet is someone got diarrhea. Quote Link to comment Share on other sites More sharing options...
JoeSchmuckatelli Posted November 2, 2021 Share Posted November 2, 2021 22 minutes ago, Meecrob said: diarrhea from experience, that has a variable TWR, and NASA likes to be precise and eliminate uncontrolled variables whenever possible. Thus, a temporary delay is recommended. Quote Link to comment Share on other sites More sharing options...
Meecrob Posted November 2, 2021 Share Posted November 2, 2021 I've experienced this variable TWR as well. It seems to scale exponentially with distance from a suitable repository. Quote Link to comment Share on other sites More sharing options...
Beccab Posted November 2, 2021 Share Posted November 2, 2021 (edited) 31 minutes ago, Meecrob said: So my throwaway joke bet is someone got diarrhea. Do they eat the NASA space food during the quarantined weeks? Edited November 2, 2021 by Beccab Quote Link to comment Share on other sites More sharing options...
JoeSchmuckatelli Posted November 2, 2021 Share Posted November 2, 2021 1 minute ago, Beccab said: Do they eat the NASA space food during the quarantined weeks? If they're anything like MRE's... its the appropriate cure. MisterE can plug up pretty much anything. Quote Link to comment Share on other sites More sharing options...
zolotiyeruki Posted November 2, 2021 Share Posted November 2, 2021 1 hour ago, Meecrob said: I've experienced this variable TWR as well. It seems to scale exponentially with distance from a suitable repository. The ISP isn't great, either. Quote Link to comment Share on other sites More sharing options...
Deddly Posted November 2, 2021 Share Posted November 2, 2021 Breaks the ice at zero-G parties. Quote Link to comment Share on other sites More sharing options...
JoeSchmuckatelli Posted November 2, 2021 Share Posted November 2, 2021 11 minutes ago, Deddly said: Breaks the ice at zero-G parties. Certainly a conversation starter - a memorable one that will be talked about for years, I'm sure. Quote Link to comment Share on other sites More sharing options...
Beccab Posted November 2, 2021 Share Posted November 2, 2021 2 minutes ago, JoeSchmuckatelli said: Certainly a conversation starter - a memorable one that will be talked about for years, I'm sure. We're still talking about the Apollo 10 flying turd after more than 50 years after allhttps://www.vox.com/2015/5/26/8646675/apollo-10-turd-poop Quote Link to comment Share on other sites More sharing options...
JoeSchmuckatelli Posted November 2, 2021 Share Posted November 2, 2021 8 minutes ago, Beccab said: We're still talking about the Apollo 10 flying turd after more than 50 years after allhttps://www.vox.com/2015/5/26/8646675/apollo-10-turd-poop How did I not know about that? Quote Link to comment Share on other sites More sharing options...
tater Posted November 3, 2021 Share Posted November 3, 2021 Quote Link to comment Share on other sites More sharing options...
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