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为评估长期贮存后固体火箭发动机安全性的变化,对贮存时间为18年的某型固体火箭发动机进行了解剖.测试并比较了经过长期贮存后发动机药柱的力学性能和各种感度,而后进行了长期贮存后推进剂和发动机试件的枪击试验,各种试验项目中均利用贮存期为4年的推进剂方坯进行对比.结果表明:长期贮存后推进剂热安全特性变化不明显,但撞击感度和摩擦感度明显增加并且在枪弹高速冲击下破碎严重,长期贮存后发动机在模拟枪击试验中表现出爆炸倾向,使用安全性大大降低.
To evaluate the safety of a solid rocket motor after long-term storage, a solid rocket motor with a storage time of 18 years was dissected.The mechanical properties and various sensitivities of the engine after long-term storage were tested and compared before proceeding The long-term storage of propellant and engine test pieces of the gun test, all kinds of test items are stored for a period of 4 years propellant billet contrast.The results show that: after long-term storage of propellants thermal safety characteristics did not change significantly Impact sensitivity and friction sensitivities increased significantly and were severely broken under the high-speed impact of bullets. After long-term storage, the engine showed an explosive tendency in the simulation shooting test and its safety for use was greatly reduced.