since a turbomolecular pump is a highly specialised multi-stage turbine, this is a 3-phase motor controller with analogue speed feedback taken from the voltage across a couple of the motor phases.

This turbine wheel is affixed to the same axle as an impeller which draws up fuel and pumps it out, ideally into a rocket’s combustion chamber. It’s all made out of resin-printed parts ...

A twin-turbo and a twin-scroll turbo ... using forced induction through a pump -- via a high-speed turbine -- to increase the amount of air that the engine has access to. Using the concept ...