For onboard naval applications, a high cooling capacity, low cost, higher meantime between maintenance Gifford McMahon Cryorefrigerator is necessary. Cryomech manufacturers an existing cryocooler, the AL300, with sufficient cooling capacity; but, its standard MTBM is 10,000 hours and it has not been designed to meet onboard requirements. A redesign of the G-M Cold Head seals and displacer for 20,000 hours will be studied. Because the compressor package is most affected by the “onboard specification”, a redesign of the affected components will also be studied.
Keywords: Helium Compressor Package, Low Cost, Cryocooler, Low Maintenance,
