Rockets that use electrical pumps for the fuel and oxygen pumps. Usually rocket engines use some of the fuel and oxygen to run these pumps, which makes them a l

Rockets that use electrical pumps for the fuel and oxygen pumps. Usually rocket engines use some of the fuel and oxygen to run these pumps, which makes them a lot more complicated. https://en.wikipedia.org/wiki/Electron_(rocket) https://en.wikipedia.org/wiki/Electron_(rocket) Is the big player in the field afaik.