High Capacity Two-Stage Pulse Tube (PREPRINT)
NORTHROP GRUMMAN SPACE AND MISSILE SYSTEMS CORP REDONDO BEACH CA SPACE TECHNOLOGY
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The High Capacity Cryocooler HCC provides large capacity cooling at both 35 K and 85 K for space applications in which focal planes and optics require cooling. The compressor is scaled from the High Energy Cryocooler HEC compressor and is capable of using input powers up to 700 W. The two linear pulse tube cold heads are integrated with the compressor into an integral cryocooler. A thermal strap between the cold heads improves efficiency and can be positioned to provide cooling for a wide range of applied loads. The cooler has undergone acceptance testing that includes thermal performance mapping over a range of reject temperatures and power levels and launch vibration testing. In addition to the acceptance testing, self induced vibration measurements were made over a range of reject temperatures and power levels.
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