Raytheon long life cryocoolers for future space missions |
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| Affiliation: | 1. Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;2. Lihan Cryogenics Co., Ltd, Shenzhen 518055, China;3. Graduate University of Chinese Academy of Sciences, Beijing 100190, China;1. Univ. Grenoble Alpes, INAC-SBT, F-38000 Grenoble, France;2. CEA, INAC-SBT, F-38000 Grenoble, France;3. CNES, 18 avenue Edouard Belin, 31401 Toulouse Cedex 9, Toulouse, France;1. Institute of Refrigeration and Cryogenics, Zhejiang University, Hangzhou 310027, China;2. Key Lab. of Ref. & Cryo. Technology of Zhejiang Province, Hangzhou 310027, China;3. TransMIT - Centre of Adaptive Cryotechnology and Sensors, D-35392 Giessen, Germany;4. Institute of Applied Physics, University of Giessen, D-35392 Giessen, Germany;1. Jaywantrao Sawant College of Engineering, Pune, Maharashtra, India;2. MIT College of Engineering, Pune, Maharashtra, India;3. VJTI, Matunga, Mumbai, India;4. Indian Institute of Technology, Bombay, Mumbai, India;5. MGM CET, Navi Mumbai, India |
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| Abstract: | Over the last several years, Raytheon has made significant advances on two long-life cryocoolers designed for efficient operation on space platforms. The first is the Low-Temperature Raytheon Stirling/Pulse Tube 2-stage (LT-RSP2) hybrid cryocooler, which is capable of providing simultaneous cooling at 55 K and 10 K nominal first and second stage temperatures. The LT-RSP2 design was finalized in mid-2009, with fabrication of the prototype unit taking place in late 2009 and early 2010 and execution of the production program in 2011–2015. During this period the LT-RSP2 has undergone extensive characterization testing and has successfully been integrated with an optical bench. The second cryocooler is the Raytheon Advanced Miniature (RAM) cryocooler, a flight packaged single stage pulse tube cooler with an integrated surge volume and inertance tube. It has been designed for high frequency operation and has been fully optimized to make use of the Raytheon Advanced Regenerator, resulting in improved efficiency relative to previous Raytheon pulse tube coolers. In this paper, aspects of both the LT-RSP2 and RAM mechanical and thermodynamic designs will be presented as well as information regarding their capabilities and performance. |
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