刘宝禄, 张宏, 许明明, 等. 基于橡胶隔振器的脉冲管制冷机微振动抑制研究[J]. 航天器环境工程, 2023, 40(5): 501-508 DOI: 10.12126/see.2023045
引用本文: 刘宝禄, 张宏, 许明明, 等. 基于橡胶隔振器的脉冲管制冷机微振动抑制研究[J]. 航天器环境工程, 2023, 40(5): 501-508 DOI: 10.12126/see.2023045
LIU B L, ZHANG H, XU M M, et al. Research on micro-vibration suppression for pulse tube cryocooler based on rubber isolator[J]. Spacecraft Environment Engineering, 2023, 40(5): 501-508. DOI: 10.12126/see.2023045
Citation: LIU B L, ZHANG H, XU M M, et al. Research on micro-vibration suppression for pulse tube cryocooler based on rubber isolator[J]. Spacecraft Environment Engineering, 2023, 40(5): 501-508. DOI: 10.12126/see.2023045

基于橡胶隔振器的脉冲管制冷机微振动抑制研究

Research on micro-vibration suppression for pulse tube cryocooler based on rubber isolator

  • 摘要: 着眼于降低某航天器敏感载荷的微振动影响,重点探究了橡胶隔振器对载荷内部脉冲管制冷机的微振动抑制效果。首先对制冷机的微振源特性展开分析;其次结合敏感载荷的隔振需求,确定采取被动隔振的方案,并对橡胶隔振器的特性进行了准静态测试和扫频试验验证;对隔振系统进行了主动段发射条件下的力学承载性试验和常温下的微振动衰减试验,最终筛选出同时兼顾主动段和在轨工作段需求的橡胶隔振器。试验结果表明:装配有隔振系统的制冷机组件能够承受住主动段发射冲击,结构稳定性高,微振动衰减效能达34.12 dB,满足>24 dB的预期要求。研究结果可为制冷机微振动抑制提供技术参考,优化后续的整体设计。

     

    Abstract: In view of reducing the micro-vibration impact on the sensitive payloads of a spacecraft, the micro-vibration suppression effect of rubber isolators on pulse tube cryocooler inside the payload was studied in this article. Firstly, the characteristics of the micro-vibration source of the cryocooler was analyzed. Secondly, based on the vibration isolation requirements for sensitive payloads, a passive isolation scheme was determined, and the performance of the rubber isolator were verified through quasi-static and sweep frequency testings. Mechanical bearing capacity was tested on the isolation system under active section launching condition, and micro-vibration attenuation was examined at room temperature. Finally, rubber isolators that meet the requirements for both the active section and the working section in orbit were selected. The results show that the cryocooler equipped with vibration isolation systems can withstand the impact from active section launch shock with high structural stability. The micro-vibration attenuation can be 34.12 dB, meeting the expected requirement of >24 dB. The research may provide a technical reference for the micro-vibration suppression for cryocooler and optimize its overall design in the future.

     

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