Thermal systems analysis for the Space Infrared Telescope Facility dewar

Pradeep Bhandari; Stanley Walter Petrick; Helene R. Schember

doi:10.1117/12.48718

1 December 1991 Thermal systems analysis for the Space Infrared Telescope Facility dewar

Pradeep Bhandari, Stanley Walter Petrick, Helene R. Schember

Proceedings Volume 1540, Infrared Technology XVII; (1991) https://doi.org/10.1117/12.48718
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

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.

Citation Download Citation

Pradeep Bhandari, Stanley Walter Petrick, and Helene R. Schember "Thermal systems analysis for the Space Infrared Telescope Facility dewar", Proc. SPIE 1540, Infrared Technology XVII, (1 December 1991); https://doi.org/10.1117/12.48718

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