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Comparison of SIRTF dewar performance in the 900 km and 100,000 km orbits (1990)

Ng, Y. S. ; Maa, S. S. ; Lee, J. H.

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Publication Date: 2019-07-13

Description: Feasibility studies showed that the Space Infrared Telescope Facility (SIRTF) can be launched into a 100,000-km high earth orbit (HEO) using a Titan/Centaur launch vehicle. This paper compares the performance of an all-superfluid helium dewar system for SIRTF under conditions of the LEO (900-km) and the HEO missions. Results show that the SIRTF all-superfluid He dewar can achieve a 5-yr lifetime for the 100,000 km HEO mission, with 20 percent margin. Methods to achieve further enhancement of dewar lifetime for the HEO mission are suggested.

Keywords: ASTRONAUTICS (GENERAL)

Type: 1989 Cryogenic Engineering Conference; Jul 24, 1989 - Jul 28, 1989; Los Angeles, CA; United States

Format: text

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