im mentioning the first one
rockets doesn't use coals,it uses kerosene or other gases and aerodynamic nose cone in order to fly
what about the plasma engine,ion engine,solid engines?
you have to make something so pipes will pump oil in combustion chambers and something to ignite it
the version 2 is just exploding
the oil burns too fast. i think fuse powder would be best. but it burns really hot and melts the engine, but you could use diamond maybe. i like the idea anyways.
2nd version coolant is LN2 for a safer ignition and kess chance for unexpected fire/explosions
you still have Loxy as coolant :p it makes it explode the whole time
for* ill try to make a 2nd deisgn with it