Timeline for What is the best chemical rocket fuel from a purely specific impulse standpoint?
Current License: CC BY-SA 4.0
24 events
| when toggle format | what | by | license | comment | |
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| Apr 17 at 13:19 | comment | added | Russell McMahon | Chlorine-trifluoride and slush Hydrogen is liable to work fairly well. ClF3 is not as reactive as Fluorine when both are gaseous at elevated temperatures BUT ClF3 is non cryogenic which gives it the edge. As a bonus (or a drawback) it's hypergolic with just about anything known. | |
| Feb 27 at 11:27 | answer | added | Stephane Bersier | timeline score: 3 | |
| Feb 27 at 10:25 | comment | added | Stephane Bersier | The ISP for a perfectly efficient lithium-fluorine rocket engine is around 700 s. | |
| Aug 14, 2022 at 5:00 | vote | accept | Vivek | ||
| Aug 11, 2022 at 19:27 | history | unprotected | Organic Marble | ||
| Aug 11, 2022 at 19:25 | history | edited | Organic Marble | CC BY-SA 4.0 |
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| Aug 11, 2022 at 19:10 | history | protected | Organic Marble | ||
| Aug 11, 2022 at 19:06 | comment | added | David Jonsson | Really rocket? Wy carry oxidizer when it is available in the surroundings. | |
| Aug 11, 2022 at 16:43 | comment | added | Joshua | @robbiecrockett: I'd like to see the photon rocket that gets more impulse per unit mass of fuel than the nuclear saltwater rocket. (If you say solar panels, your photon rocket has an actual infinite ISP because mass before = mass after.) | |
| Aug 11, 2022 at 13:46 | comment | added | robbie crockett | # Photon rocket # Strictly speaking, photons are the best fuel source. With the highest exit velocity physically attainable, they will have the highest ISP. Of course, ISP is not the only consideration of course, and this answer is mostly pedantic, and I missed the part where you mentioned chemical rockets. See here: space.stackexchange.com/questions/17122/is-there-a-maximum-isp or en.wikipedia.org/wiki/Photon_rocket | |
| Aug 10, 2022 at 18:28 | answer | added | Peter Cordes | timeline score: 4 | |
| Aug 9, 2022 at 19:16 | history | became hot network question | |||
| Aug 9, 2022 at 19:15 | comment | added | Organic Marble | Highly related: space.stackexchange.com/q/17129/6944 | |
| Aug 9, 2022 at 17:30 | answer | added | tckosvic | timeline score: 15 | |
| Aug 9, 2022 at 16:19 | answer | added | WarpPrime | timeline score: 12 | |
| Aug 9, 2022 at 15:57 | comment | added | PM 2Ring | "this combination is impractical" Just slightly. ;) On a closely related note, Clark mentions $\rm ClF_3$ in Ignition!: "It is, of course, extremely toxic, but that's the least of the problem. It is hypergolic with every known fuel, and so rapidly hypergolic that no ignition delay has ever been measured. It is also hypergolic with such things as cloth, wood, and test engineers, not to mention asbestos, sand, and water-with which it reacts explosively". science.org/content/blog-post/sand-won-t-save-you-time | |
| Aug 9, 2022 at 15:00 | history | tweeted | twitter.com/StackSpaceExp/status/1557018871021854721 | ||
| Aug 9, 2022 at 13:32 | comment | added | CallMeTom | Good question, the answer will be a trade-off between energy from the chemical reaction (that is why LH2-LOX is nice) and the mass of the exhaust (RP-1s specialty). I am really looking forward to see the answers. | |
| Aug 9, 2022 at 11:59 | history | edited | Vivek | CC BY-SA 4.0 |
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| Aug 9, 2022 at 11:40 | history | edited | Vivek | CC BY-SA 4.0 |
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| Aug 9, 2022 at 11:38 | history | edited | Vivek | CC BY-SA 4.0 |
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| Aug 9, 2022 at 11:24 | comment | added | Organic Marble | You left out the best "commonly" used propellants: liquid hydrogen/liquid oxygen, giving Isp in the mid 400s in vacuum. Forget the solids, and what about ion drives? Is your query restricted to chemical rockets? | |
| S Aug 9, 2022 at 11:11 | review | First questions | |||
| Aug 9, 2022 at 11:54 | |||||
| S Aug 9, 2022 at 11:11 | history | asked | Vivek | CC BY-SA 4.0 |