Frequency-matched cryocooler scaling for low-cost, minimal disturbance space cooling

摘要

Components within a cryocooler are scaled and/or configured for operation at a CMG operating frequency (e.g., 100 Hz) rather than at 30 to 70 Hz, matching the exported disturbances of control moment gyroscopes on the same platform and reducing line-of-sight jitter for electro-optic infrared focal plane array sensors. The smaller piston working volume and other reduced component sizes allow the cryocooler to be smaller and lighter than designs operating at lower frequencies. Combined with an advanced regenerator suitable for the higher frequency operation, the cryocooler has improved cooling efficiency over such lower frequency designs.

主权项

1. A cryocooler, comprising:
a compressor configured to operate at a selected frequency matching an operating frequency of one or more control moment gyroscopes for a system in which the cryocooler is configured to operate, the compressor including one or more piston assemblies coupled to flexures configured to communicate a spring force to one or more pistons within the one or more piston assemblies; and a cooling device in fluid communication with the compressor and including a cold tip in fluid communication with a surge volume via an inertance channel and a regenerator assembly, the cold tip configured to provide cooling to a structure external to the cryocooler.