运载火箭动特性中推进剂纵向质量分散建模方法
Structure & Environment Engineering(2017)
Abstract
将贮箱箱底建模为环段,采用递推公式将推进剂纵向质量分散到环段,代替目前广泛应用的柱段底点纵向耦合质量单元方法,建立了运载火箭动特性模型.分析表明各环段分散量均匀并呈单调递减趋势.计算结果和试验对比表明该建模方法能获取更为精确的模态计算结果.
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