Passive orbital disconnect strutThe design and test results with a third generation passive orbital disconnect strut (PODS) for space-based cryogenic He dewars are presented. Three pairs of PODS struts support a tank and change lengths in response to gas and temperature changes. A thin wall fiberglass tube is used on the cold disconnect end, which can be operated on the ground or in space. Tests were performed to characterize heat flows across the cold end to a liquid He sink and subsequent vacuum pressure within the He tank. Heat transfer was lower than predicted, suggesting that longer dewar in-orbit lifetimes can be expected with the new PODS.
Document ID
19850044368
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Parmley, R. T. (Lockheed Research Laboratories Palo Alto, CA, United States)
Kittel, P. (NASA Ames Research Center Moffett Field, CA, United States)