| 液体火箭POGO振动时域分析方法研究 |
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| 引用本文： | 杨明,杨智春,史淑娟.液体火箭POGO振动时域分析方法研究[J].强度与环境,2010,37(2):29-36. |
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| 作者姓名： | 杨明 杨智春 史淑娟 |
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| 作者单位： | 1. 西北工业大学,西安,710072
2. 北京宇航系统研究所,北京,100076 |
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| 摘 要： | 建立了液体火箭的动力学方程,将其化为具有初值问题的微分方程进行求解,以实现POGO振动特性的时域仿真,在微分方程的数值求解的基础上,获得液体火箭POGO振动的动态响应特性。根据液体火箭POGO振动主要参数,如结构特征点处的加速度,泵入口处的压力脉动等的时间历程的收敛或发散情况及飞行特征秒,来判断POGO振动是否发生或发生的时间。
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| 关 键 词： | 液体火箭 POGO 振动 时域 |
Method research of time domain analysis of POGO vibration of the liquid rocket |
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| Yang Ming,Yang Zhichun,Shi Shujuan.Method research of time domain analysis of POGO vibration of the liquid rocket[J].Structure & Environment Engineering,2010,37(2):29-36. |
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| Authors: | Yang Ming Yang Zhichun Shi Shujuan |
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| Institution: | Yang+Ming1+Yang+Zhichun1+Shi+Shujuan2+(1+Northwestern+Polytechnical+University,Xi%e2%80%99an+710072,China,2+Beijing+Institute+of+Astronautical+System+Engineer,Beijing+100076,China) |
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| Abstract: | The paper emulates the featured time domain of POGO vibration by solving the dynamical equation set for liquid rocket, which is the differential equation with initial value problem, and by using the numerical solution to the differential equation, getting the dynamic response of POGO vibration of liquid rocket. Based on the collection of the time course of some main parameters or its divergence and flying featured second, we can judge whether POGO vibration happens or the time of its happening. The main par... |
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| Keywords: | POGO |
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