航天器环境工程2023，Vol.40Issue(6)：605-610,6.DOI:10.12126/see.2023078
固液捆绑火箭尾舱设备随机振动环境优化预示分析
Predictive analysis of random vibration environment optimization for equipment in solid-liquid strap-on rocket tail cabin
龙新军 1欧阳涵 1方贤亮 1潘望白 1胡迪科1
作者信息
- 1. 上海宇航系统工程研究所,上海 201109
- 折叠
摘要
Abstract
The jet noise of launch vehicle engine is the main factor causing the random vibration environment of rocket cabin.For the solid-liquid strap-on rocket,the combined bundling effect of jet noise of multiple solid booster engines and core liquid engine will make the high-frequency random vibration of the cabin more severe,especially for the tail cabin of the solid booster engine near the engine nozzle.Focusing on the high-frequency random vibration environment of equipment in a sample-staged tail cabin and their support mounting surface of a solid-liquid strap-on rocket under noise excitation,this paper used the finite element analysis(FEA)method to investigate the optimization of the random vibration environment.The results show that the high-frequency random vibration response of the mounting surface can be significantly improved by increasing the thickness of the equipment support frame.Based on the obtained result,the support of a unit equipment was redesigned and tested.The maximum deviation between the tested results and the simulation predicted results all meet the±3 dB deviation range generally required in engineering.The feasibility of the environmental optimization and prediction analysis methods is verified.The proposed research may provide a reference for the optimization and prediction of high-frequency random vibration for the follow-up carrying cabin under noise excitation.关键词
固液捆绑火箭/噪声激励/随机振动/有限元分析/振动环境优化Key words
solid-liquid strap-on rocket/noise excitation/random vibration/finite element analysis/optimization of vibration environment分类
航空航天引用本文复制引用
龙新军,欧阳涵,方贤亮,潘望白,胡迪科..固液捆绑火箭尾舱设备随机振动环境优化预示分析[J].航天器环境工程,2023,40(6):605-610,6.
