An electro-hydraulic servo system for LH2+LO2 rocket engine TVC

This paper describes the design concept. structure characteristics and major performances of the new type electro-hydraulic servo system for the new generation of China LVs. it places stress on the speedy gaseous hydrogen motor running in the dry friction, sky-ground triple driving safety switchover for the hydraulic pump. energy-stored ahead starting hydraulic energy supply, high reliability mechanical feedback type electro-hydraulic servo actuator with dynamic pressure compensation function, and the integration and self-contained structure design for the 4-variable TVC system.