CHARACTERIZATION OF A TWO-STAGE PULSE TUBE COOLER FOR SPACE APPLICATIONS

被引:1
|
作者
Orsini, R. [1 ]
Nguyen, T. [1 ]
Colbert, R. [1 ]
Raab, J. [1 ]
机构
[1] Northrop Grumman Aerosp Syst, Redondo Beach, CA 90278 USA
关键词
Cryocooler; Space; Cryogenic; Multi Stage; Pulse Tube Cooler;
D O I
10.1063/1.3422383
中图分类号
O414.1 [热力学];
学科分类号
摘要
A two-stage long-life, low mass and efficient pulse tube cooler for space applications has been developed and acceptance tested for flight applications This paper presents the data collected on four flight coolers during acceptance testing. Flight acceptance test of these cryocoolers includes thermal performance mapping over a range of reject temperatures, launch vibration testing and thermal cycling testing. Designed conservatively for a 10-year life, the coolers are required to provide simultaneous cooling powers at 95 K and 180 K while rejecting to 300 K with less than 187 W input power to the electronics. The total mass of each cooler and electronics system is 8.7 kg. The radiation-hardened and software driven control electronics provides cooler control functions which are fully re-configurable in orbit. These functions include precision temperature control to better than 100 mK p-p. This 2 stage cooler has heritage to the 12 Northrop Grumman Aerospace Systems (NGAS) coolers currently on orbit with 2 operating for more than 11.5 years.
引用
收藏
页码:410 / 417
页数:8
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