Timeline for Can rockets fly without burning any fuel with the help of gases under extreme pressure only?
Current License: CC BY-SA 4.0
4 events
| when toggle format | what | by | license | comment | |
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| Sep 2, 2020 at 8:23 | comment | added | cmaster - reinstate monica | @Joshua No matter how fuel rich they run, the impulse comes mainly from the accelerated oxygen atoms. | |
| Sep 1, 2020 at 23:07 | comment | added | Joshua | @cmaster-reinstatemonica: Not so. They run hydralox engines hydrogen rich to improve ISP. | |
| Aug 31, 2020 at 14:54 | comment | added | cmaster - reinstate monica | Also, hydrogen fuel mostly acts as a heating agent in rockets. An oxygen atom is 16 times as heavy as a hydrogen atom, so only 1/9 of the mass expelled from a hydrogen/oxygen rocket comes from the hydrogen. The remaining 8/9 come from accelerating the oxygen atoms out of the nozzle. The hydrogen only provides the chemical energy to do so. | |
| Aug 31, 2020 at 7:42 | history | answered | Vid | CC BY-SA 4.0 |