An Electro-Hydraulic Actuator for the TVC of a Throttlable Kerolox Rocket Engine  

适应液氧煤油发动机变推力工况的伺服机构设计方案

作　　者：LIU Hong CHEN Keqin LAN Tian WANG Yuhao ZHAO Yingxin ZHAO Shoujun 

机构地区：[1]Beijing Institute of Precision Mechatronics and Controls,Beijing 100076

出　　处：《Aerospace China》2021年第2期53-58,共6页中国航天（英文版）

摘　　要：An electro-hydraulic actuator for the thrust vector control(TVC)of a throttlable kerolox rocket engine is introduced in this paper.The creative feature is an integrated hydraulic power drive unit,where a constant speed kerosene motor is used to draw high pressure kerosene from the engine and to drive a constant pressure variable displacement piston pump,acting as the power supply for the actuator.Its operational mechanism,to accommodate the varying pressure from the turbo-pump of a throttling engine,lies in a pressure-reducing flow regulator inserted at the motor inlet.Another key point is that the displacement of the motor is reasonably bigger than the pump so that a sufficiently wide range of pressures can be adapted.Modeling analysis and flight test results were well matched,which show the outstanding performance of this novel type actuator.

关 键 词：kerolox rocket engine thrust adjusting electro-hydraulic actuator 

分 类 号：V434.2[航空宇航科学与技术—航空宇航推进理论与工程]