Abstract The NASA Hubble Space Telescope Project is developing an active cryogenic cooling system to replace the expendable cryogen used in the NICMOS instrument. A key element of the system is the Power Conversion Electronics which converts spacecraft DC to 3-phase AC to drive a reverse-Brayton cycle refrigerator and a circulator. Additional functions include DC power distribution, health and status telemetering, and safety monitoring. A flight unit meeting these requirements while remaining within a 6.5×7.5-inch footprint and 67W power dissipation constraint, was successfully designed, built and tested within 10-months of go-ahead. State-of-the-art electronics techniques, including pulse-width modulated inverters, laminated metal core printed wiring boards, and Faraday cage containment methods were utilized. Electrical efficiencies and performance parameters are described.
Design and Qualification of Flight Electronics for the HST NICMOS Reverse Brayton Cryocooler
Cryocoolers 10 ; 439-448
2002-01-01
10 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Design and Qualification of Flight Electronics for the HST NICMOS Reverse Brayton Cryocooler
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