Design and verification of pyrotechnic impact load buffer device for micro-nano satellite
ZHAO Xiangyu1,2,3, ZHAO Chunjuan1,2,3, ZHANG Lei1,3, CHEN Shanbo3, SHI Yousheng3
1.Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China;
2.University of Chinese Academy of Sciences, Beijing 100049, China;
3.Chang Guang Satellite Technology Co., Ltd., Changchun 130033, China
Abstract：The pyrotechnic shock environment is one of the worst mechanical environments experienced by spacecraft such as satellites, especially when the spacecraft is separated from the launch vehicle. The impact of the separation of the stars and arrows will affect the normal operation of equipment with shock-sensitive components and even the spacecraft, and can even lead to the failure of the launch mission in severe cases. Therefore, it is necessary to study the measures to suppress the impact of fireworks on the environment. Aiming at the problem of excessive shock response of a metal-frame micro-nano satellite during the star-arrow separation test during the development stage, the article combines the source of pyrotechnic shock load, the mechanism of pyrotechnic shock transmission and the method of suppressing pyrotechnic shock, and buffers the shock load of the entire star. The device is designed and verified by shock and vibration tests. The test results show that the pyrotechnic shock buffer device can reduce the shock load by more than 70%.The study results were very important for shock resistance analysis and structural design of aerospace products.
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