With these kinds of numbers for a simple steamer for near Earth shuttles, who needs cryogenics?
BONUS: For a demo…I’ve decided the ONLY tank that needs to be plastic, composite, or light weight ceramic, is the HEATING chamber, if using microwaves…but ANY heating method will do for the test, so metal tanks are OK…up to a point. If fact, on a test rocket…the water can be brought to boiling and higher pressure at the PAD, and a high pressure hose is used to fill an aluminum or light weight metal reinforced tank inside the rocket, with the nozzle at the rocket’s nose. The boiler can blow the extremely hot boiling water into the tank just before takeoff. As the water steams in an enclosed tank, the pressure will build internally very quickly. To launch after internal pressure is high enough, the gate valve at the bottom orifice is blasted open…and it’s LIFTOFF! If you can’t get the water boiled…a smaller test can be done with plain pressurized air pushing the water out. Just be sure and get up to as high as you can (500-2,000 psi). This steam rocket will not really show it
