3D printed rocket engine, up, up and away!!!....

[Carnos Jax]

Wow Racer....that IS interesting. I've only known propellant pumps to be powered by a gas turbine driven by the combustion products of a chemical reaction (some of the propellant supply is drawn off for this purpose).

I remember the person mps for the Saturn V moon rocket's huge F1 engines being powered by a 50,000 horsepower turbine.