摘要
根据发动机试车台轴向推力测量和推力偏心测量要求,对试车台的台架结构进行了设计与分析。通过增加台架的动态特性,减小台架结构对测量准确度的影响;采取增加动架的轴向刚度和减小横向刚度设计,提高动架的固有频率,消除发动机启动时动架的振动影响等,满足了某型小推力火箭发动机测试要求。
According to the reguirements of axial thrust measurement and thrust eccentricity measurement of engine test bench, the structure of the test benchis designed and analyzed. The design enhances the dynamic characteristics of the bench to reduce the influence of the bench structure on the measurement accuracy. It increases the axial stiffness and reduces the lateral stiffness of the movableframe to raise the natural frequency of the frame and eliminates the vibration effect of the movable frame when starting the engine. The test bench has met the test requiremts of a small thrust rocket engine.
作者
徐正红
刘子虚
XU Zhenghong;LIU Zixu(Anhui Changjiang Institute of Metrology & Measurement, Hefei 230088,China)
出处
《计测技术》
2018年第6期33-36,共4页
Metrology & Measurement Technology
基金
国家"十二五"技术基础科研项目(JSJC201345C003)
关键词
火箭发动机
试车台
测量
结构设计
rocket engine
test bench
measurement
constructional design
