火箭推进2018，Vol.44Issue(3)：37-42,6.
注气式蓄压器系统工作特性仿真分析
Simulation analysis on operating characteristics of gas-filled accumulator system
万屹仑 1付欣毓 2张黎辉 1胡久辉3
作者信息
- 1. 北京航空航天大学 宇航学院,北京100191
- 2. 西安超越机电技术有限责任公司,陕西 西安710077
- 3. 北京宇航系统工程研究所,北京100076
- 折叠
摘要
Abstract
With the POGO stability of a large launch vehicle as research background, the simulation analysis of a gas-filled accumulator was carried out without any application in China. On the basis of building the dynamic model of a gas-filled accumulator, the accuracy of simulation was validated by using the relevant parameters of the space shuttle main engine. The influences of the accumulator on the natural frequency of a propulsion system and the frequency characteristics of propulsion systems of four different pressure accumulators were calculated. The effects of injection flow rate, injection temperature, venting flow rate and venting time on the dynamic characteristics of accumulator were investigated. The simulation results indicate that the compression capacity of the accumulator’s pneumatic die cushion at the bottom of overflow holes decreases with the increase of the inlet pressure. Besides, the gas-filled accumulator can more effectively avoid the intersection of propulsion system frequency and vehicle structural frequency in comparison with traditional accumulator. The research results have a certain reference significance for the development of gas-filled accumulator.关键词
注气式蓄压器/推进系统/固有频率/POGO振动Key words
gas-filled accumulator/propulsion system/natural frequency/POGO vibration分类
航空航天引用本文复制引用
万屹仑,付欣毓,张黎辉,胡久辉..注气式蓄压器系统工作特性仿真分析[J].火箭推进,2018,44(3):37-42,6.
