A Study on Linear Oscillatory Actuator for Liquid Hydrogen Pump

Abstract A new type of linear oscillatory actuator has been developed as a drive source for liquid hydrogen pump. The distinguishing feature of the linear oscillatory actuator is that not only its structure is simple with a few parts, but also it protects the cylinder from external heat as it is mounted in the liquid hydrogen tank. In this paper, the structure and operation of the linear oscillatory actuator is described first, and then the static thrust is discussed by means of numerical analysis and experiment, both verifying a fact that the static thrust achieves desired requirements for liquid hydrogen pump.