空空导弹发动机安全使用寿命评估分析

Evaluation and Analysis of Air-to-air Missile's Safety and Service Life

针对空空导弹安全使用寿命问题,对国内外固体火箭发动机使用寿命评估方法进行了总结,并以AIM120空空导弹为例,详细说明了该空空导弹发动机贮存寿命和挂飞寿命的评估过程。结合目前国内通常采用的发动机寿命评估方法及空空导弹发动机延寿时采用的方法,对比了国内外的技术差异。结果表明:应进一步完善发动机寿命评估方法体系,加强固体推进剂在交叉载荷作用下的力学性能研究,完善装药结构完整性理论,发动机交付后应同时开展发动机使用寿命监测计划。

In view of air-to-air missile life safety problems, service life evaluation methods used both at home and abroad were summarized. Taking AIM-120 missile as an example, assessment of its storage life and flight hours was described. Considering common life evaluation methods of solid rocket motor and life-extension method of the air-to-air missile motor at present, technical differences at home and abroad were compared. The results show that the SRM life evaluation method system should be improved, the mechanical properties of solid pro- pellants under multiple loads should be further studied for structure integrity theory of grain, and service life surveillance program should be considered after delivery of solid rocket motors.