Advanced Multi-stage Cryogenic Cooling Technology
Agency / Branch:
DOD / USAF
"Many advanced space-based reconnaissance systems critical to national security employ infrared detectors, optics, and thermal baffles that require multi-stage cooling. If cryocoolers such as Stirlings with single point cooling are used, then multiplecoolers will be required that impose mass, power, volume, and reliability penalties; redundancy further increases these penalties. These penalties can be mitigated through the use of a single cryocooler with multiple cooling stages, thereby also reducingthe number of compressors and electronic controllers. The objective of the Phase I study is to develop and demonstrate the feasibility of a Multi-Stage Brayton Cryocooler (MSBC) with simultaneous cooling capacities of 6 W at 85 K and 2 W at 35 K. Thecryocooler system will be highly leveraged off components currently under development: a micro-electro-mechanical system (MEMS) based expander, an oil-free scroll compressor, and a high effectiveness counterflow heat exchanger. The MSBC's operationalcapabilities include significant integration advantages: the cooling fluid can be circulated over long distances providing isolation from cooler-induced interference, variable load capability, and a distributed cold-head that can accommodate large arefocal pane assemblies (FPA). These features and capabilities will significantly reduce satellite power and heat rejection requirements, decrease overall weight, and greatly simplify cooling system
Small Business Information at Submission:
Technology Applications, Inc.
5445 Conestoga Court, #2A Boulder, CO 80301
Number of Employees: