Thermal design of the Wide Field/Planetary CameraThe Wide Field/Planetary Camera is an imaging system developed by the Jet Propulsion Laboratory for the NASA Hubble Space Telescope currently scheduled to be launched in December 1989 aboard the space shuttle. The temperature control design of the instrument utilizes multilayered insulation, electric resistance heaters, aluminum/ammonia heat pipes, thermoelectric coolers, temperature control coatings, and space radiators. A feedback control system maintains stable sensor temperatures. Thermal capacitance maintains stable optics and electronics temperatures during transient conditions. Schedule slips and launch delays have allowed extensive thermal testing of the instrument. Six instrument thermal vacuum tests and a spacecraft thermal vacuum test were performed. Several modifications have been made to the instrument to correct icing and contamination problems that have been discovered during thermal vacuum testing. This paper describes the thermal design, last instrument thermal vacuum test, results, and thermal model correlation.
Document ID
19890055894
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Garcia, R. D. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Jones, J. A. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Stultz, J. W. (California Institute of Technology Jet Propulsion Laboratory, Pasadena, United States)