摘要
国内航天器太阳翼的压紧释放装置绝大多数使用火工切割器作为释放的动力源,当火工切割器起爆时,会产生很大的高频冲击载荷,对压紧点附近的设备造成很大的影响。为此,文章以国内典型航天器太阳翼压紧杆式压紧释放装置为研究对象,对其冲击载荷进行分析,提出了一种仿真基础模型,通过评估火工切割器的起爆能量,避开较难分析的冲击源起爆过程,得到各个测点的冲击载荷。冲击载荷的仿真结果与试验结果进行比较,验证了仿真基础模型的有效性,并提出重点考虑火工切割器安装螺钉的建模,从而对基础模型加以修正。
Pyrotechnic cutters are mainly used as driven separator in the hold-down and release device of spacecraft solar wing.Big high-frequency impact load will be produced when pyrotechnical cutters work,which will harm the equipment nearby.Based on a typical rod-like hold-down and release device of solar wing,the impact load is analyzed,a basic simulation model is put forward,and the priming energy of pyrotechnic cutter is evaluated,avoiding the priming course which is difficult to analyze.Besides,the impact loads of various test points are measured,and both the simulation and test results validate the basic model.In order to modify the basic model,it is necessary to consider the fixing bolts of pyrotechnic cutter when modeling.
引文
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