摘要
滚转弹头的再入过程中，滚速过零对落点精度影响最大。本文分析了滚速过零的机理，推导了考虑滚动阻尼影响的过零高度公式，以及滚速过零影响下的落点散布公式。最后用六自由度弹道数字仿真结果同近似计算结果作了比较，比较结果表明了近似分析的可行性。
One of the greatest impact dispersion is caused by zero roll-rate for spinning missiles during their re-entry flights.The mechanism of roll-rate through zero is analysed.The altitude of zero roll-rate for including roll damping influence and the impact dispersion as a result of zero roll-rate are formulaed.Finally,we compare six degrees of freedom simulation results of ballistic re-entry missiles motion with the computing results of approximate formula.The comparison shows the feasibility of the approximate analysis.
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
1994年第3期80-86,79,共8页
Journal of National University of Defense Technology
关键词
滚动再入
过零高度
落点散布
弹头
ss:spinning re-entry,trim state,zero roll-rate altitude,impact dispersion
