/sci/ - Science & Math

>>8743210

Rocket engines are hard because you have to balance all the thermodynamics and flow rates and so forth.

Jet engines are hard because you have to get the right compression ratios and rpms and be able to run everything as hot as possible without melting your blades.

They're different problems, but a rocket engine is easier than a jet engine in some ways and vice-versa. In a jet engine it's way easier to get more efficient, but you won't ever achieve the TWR of a rocket, and you can't run as hot as you'd like to. Likewise in a rocket your combustion chamber pressure and temperature can be insane because you're pumping your fuel as coolant so the heat flux isn't that big a deal, but you have to design your fuel injector to prevent the flame from spinning and destroying your nozzle, as well as make sure you're actually flowing enough coolant over the combustion chamber and nozzle,etc. In both cases producing a reliable machine is difficult.

So do you want to add any substance you this discussion or are you just going to keep making assertions?