Advanced Devices for Cryogenic Thermal Management

This paper describes six advanced cryogenic thermal management devices/subsystems developed by Swales Aerospace for ground/space‐based applications of interest to NASA, DoD, and the commercial sector. The devices/subsystems described herein include the following: (a) a differential thermal expansion cryogenic thermal switch (DTE‐CTSW) constructed with high purity aluminum end‐pieces and an Ultem support rod for the 6 K Mid‐Infrared Instrument (MIRI) on the James Webb Space Telescope (JWST); (b) a quad‐redundant DTE‐CTSW assembly for the 35 K science instruments (NIRCam, NIRSpec, and FGS) mounted on the JWST Integrated Science Instrument Module (ISIM); (c) a cryogenic diode heat pipe (CDHP) thermal switching system using methane as the working fluid for the 100 K CRISM hyperspectral mapping instrument on the Mars Reconnaissance Orbiter (MRO); and (d) three additional devices/subsystems developed during the AFRL‐sponsored CRYOTOOL program, which include a dual DTE‐CTSW/dual cryocooler test bed, a miniaturiz...