摘要
基于无水平冲击着陆工况设计的飞船座椅缓冲器的缓冲行程在有水平冲击时会超出空间限制要求。针对这种设计缺陷,在考虑水平冲击工况的基础上,根据缓冲器工作原理提出了分三部分设计缓冲力的思想。综合考虑加速度响应峰值、行程和缓冲力梯度的影响,在极限水平冲击工况下设计了新的五级分布缓冲力。结果表明:重新设计的缓冲机构缓冲力符合行程约束要求,能够适应更宽的着陆工况范围。
The buffer force of the seat-buffer machine in manned spacecraft is usually designed considering vertical shock only. As a result, the buffer journey may exceed space limit under horizontal shock. To solve this problem, the design process is divided into three steps based on the working principle of the seat-buffer machine. Considering the influences of acceleration, buffer journey and gradient, five-level buffer force is redesigned under utmost horizontal shock landing condition. Results show that redesigned buffer force satisfys buffer journey limit requirement and is more robust to landing conditions.
出处
《工程力学》
EI
CSCD
北大核心
2009年第9期186-190,共5页
Engineering Mechanics
基金
中国博士后科学基金项目(20060390892)
关键词
载人飞船
缓冲器
着陆工况
极限水平冲击
设计方法
manned spacecraft
buffer machine
landing condition
utmost horizontal shock
design methodology
