液体火箭纵向耦合振动建模及其动态特性分析

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (24) : 71-76.

论文

液体火箭纵向耦合振动建模及其动态特性分析

郝雨1 徐得元1 杨琼梁2 刘锦凡2 柳征勇2 唐国安1

作者信息 +

Modeling and Dynamic Characteristic Analysis for Longitudinal Coupled Vibration of Liquid Rocket

HAO Yu1 XU Deyuan1 YANG Qiongliang2 LIU Jinfan2 LIU Zhengyong2 TANG Guoan1

Author information +

文章历史 +

摘要

针对液体火箭结构-推进系统的纵向耦合振动问题，建立推进系统各个组件的时域动力学模型，推导出结构-推进耦合系统二阶线性微分方程形式的控制方程。该方法能快速求解得到耦合系统的全部特征值，而且还能在此基础上分析特征值关于蓄压器和泵的物理参数的灵敏度,为液体火箭推进系统的参数优化提供技术手段。

Abstract

For the problem of structure-propulsion coupled longitudinal vibration of a liquid-propulsion launch vehicle, dynamic model of each component of the propulsion system is established in time domain. Governing equation of the coupled system is deduced in the form of second-order linear differential equation. With this method, all eigenvalues of the coupled system can be obtained quickly, and their sensitivities with respect to physical parameters of the accumulator and pump can be calculated easily, providing technique method for optimization of liquid rockets.

导出引用

郝雨徐得元杨琼梁刘锦凡柳征勇唐国安. 液体火箭纵向耦合振动建模及其动态特性分析[J]. 振动与冲击, 2014, 33(24): 71-76

HAO Yu XU Deyuan YANG Qiongliang LIU Jinfan LIU Zhengyong TANG Guoan. Modeling and Dynamic Characteristic Analysis for Longitudinal Coupled Vibration of Liquid Rocket[J]. Journal of Vibration and Shock, 2014, 33(24): 71-76