摘要
"高分四号"卫星凝视相机采用国产长寿命脉冲管制冷机冷却红外焦平面探测器,是中国长寿命脉冲管制冷机首次在轨业务应用。文章介绍了该长寿命脉冲管制冷机的特点、主要技术指标、可靠性控制措施,同时介绍了中国科学院理化技术研究所基于"高分四号"卫星凝视相机脉冲管制冷机研制的新一代脉冲管制冷机的情况。"高分四号"卫星上的脉冲管制冷机采用理化所独立研制的高效率压缩机。该压缩机采用永磁电机动圈结构、板弹簧支撑,电机中永磁场最高磁场强度达到1.1T。脉冲管冷指采用同轴布置。整机制冷性能为3W/80K,最大输入功率小于80W,整机质量小于6kg。脉冲管制冷机已在轨连续开机超过半年,性能未见衰减。
A pulse tube cryocooler is installed on the GF-4 satellite to cooling down an infrared focal plane detector. The pulse tube cryocooler, whose on-orbit life time is designed more than 5 years, is the frist Chinese device to servicing on orbit. This paper introduces the characteristics, the main technical data and the reliability of the pulse tube cryocooler. The next generation pulse tube cryocoolers developed by IPC （The Technical Institute of Physical And Chemistry） is introduced, which is based on the GF-4 pulse tube technique. A compressor which has two pistons, high efficiency linear motor and plate support spring is used to drive a co-axial pulse tube cooled finger. The highest magnetic field strength is 1.1T. The pulse tube cryocooler can provide 3W cooling power at 80K with 80W input power. The mass of the cryocooler is 6kg. The crycooler has been running on orbit for more than 4 000 hours. The performance degradation is not observed yet.
出处
《航天返回与遥感》
北大核心
2016年第4期66-71,共6页
Spacecraft Recovery & Remote Sensing
基金
基金项目:国家重大科技专项工程
