Thermal systems analysis for the Space Infrared Telescope Facility dewar

Details Thermal systems analysis for the Space Infrared Telescope Facility dewar Thermal systems analysis for the Space Infrared Telescope Facility dewar

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991spie.1540...97b&link_type=abstract

In: Infrared technology XVII; Proceedings of the Meeting, San Diego, CA, July 22-26, 1991 (A93-38376 15-35), p. 97-108.

Computer Science

Performance

Cryogenic Equipment, Design Analysis, Performance Prediction, Space Infrared Telescope Facility, Systems Analysis, Computerized Simulation, Heat Transfer, Liquid Helium, Mathematical Models, Satellite Lifetime

Scientific paper

Thermal systems analysis models were used to design SFHe cooled dewar for the Space Infrared Telescope Facility (SIRTF), a 1 m class cryogenically cooled observatory for IR astronomy. The models are capable of computing both the heat leaks into the dewar and the operating temperature of a SFHe tank. The models are aimed at predicting the ability of the SIRTF cryogenic system to satisfy a five-year mission lifetime requirement and maintain the SFHe tank operating temperature of 1.25 K to provide sufficient cooling for science instruments and the optical system. The thermal models are very detailed and very fast with a typical steady state run of about 20 sec on a VAX minicomputer.

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