Botlawson t1_je1es5k wrote on March 28, 2023 at 6:39 PM

Reply to comment by mancinedinburgh in The Swiss hypersonic hydrogen jet aiming to fly between Europe and Australia in 4 hours by mancinedinburgh

For a Hypersonic craft hydrogen has some small advantages that don't apply to most others vehicles. First it burns exceptionally fast. This shrinks the engines. Second it has an extremely high specific heat so pound for pound you can dump a lot more heat from the frame and engine into the fuel before burning it.

MightyH20 t1_je4bktn wrote on March 29, 2023 at 9:32 AM

Third, using Hydrogen cools down various propulsion systems due to pressure difference when distributed to the combustion engine.