Timeline for Long term sustainability of Space Flight
Current License: CC BY-SA 4.0
18 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 21, 2020 at 0:01 | history | tweeted | twitter.com/StackSpaceExp/status/1241152820432297987 | ||
| Mar 20, 2020 at 18:21 | comment | added | Uwe | For non cryogenic liquid propellants, nitrogen may be used to pressurize tanks. But using helium instead of nitrogen will save some weight. | |
| Mar 20, 2020 at 15:08 | comment | added | Uwe | "Regarding only being able to use helium for rocket refill" I did not write about refilling. You can not use nitrogen to pressurize liquid hydrogen, look for boiling temperatures of both gases in Wikipedia. | |
| Mar 20, 2020 at 14:11 | history | reopened | called2voyage♦ | ||
| Feb 25, 2020 at 3:05 | review | Reopen votes | |||
| Feb 25, 2020 at 12:21 | |||||
| Feb 21, 2020 at 19:39 | history | edited | BadPirate | CC BY-SA 4.0 |
Removed mention of fiction. Now a straight forward space question.
|
| Feb 20, 2020 at 18:10 | review | Reopen votes | |||
| Feb 20, 2020 at 22:26 | |||||
| Feb 20, 2020 at 17:53 | comment | added | BadPirate | I suppose it's already been closed, but I think the nit about this being not fact based is cleared up by moving the question to the top and the context below. -- @Uwe - Regarding only being able to use helium for rocket refill, do you have a source? Sources I found implied nitrogen could be used, but gave no examples. | |
| Feb 20, 2020 at 17:52 | history | edited | BadPirate | CC BY-SA 4.0 |
added 30 characters in body
|
| Feb 19, 2020 at 18:27 | comment | added | Uwe | You can not pressurize a liquid hydrogen tank with nitrogen. The nitrogen would freeze. Helium is the only gas that is not solid or liquid at the temperature of liquid hydrogen. | |
| Feb 19, 2020 at 18:24 | history | closed |
Brian Tompsett - 汤莱恩 Organic Marble peterh GdD user20636 |
Opinion-based | |
| Feb 19, 2020 at 18:22 | answer | added | uhoh | timeline score: 2 | |
| Feb 19, 2020 at 12:53 | answer | added | Carl Witthoft | timeline score: 1 | |
| Feb 19, 2020 at 4:52 | comment | added | ikrase | @BadPirate Yes, that would seem to not be totally dependent on helium, and there surely must be other ways to do it. | |
| Feb 18, 2020 at 18:05 | review | Close votes | |||
| Feb 18, 2020 at 21:45 | |||||
| Feb 18, 2020 at 17:35 | review | First posts | |||
| Feb 18, 2020 at 17:46 | |||||
| Feb 18, 2020 at 17:31 | comment | added | BadPirate | One example might be that we run out of Helium, which (seems too?) be required for re-pressurization of rocket tanks during launch and is a limited resource. Though I've seen reference that it might be possible to do this with Nitrogen? | |
| Feb 18, 2020 at 17:30 | history | asked | BadPirate | CC BY-SA 4.0 |