Radiative cryogenic cooler for the pressure modulator IR radiometer

Computer Science – Performance

Scientific paper

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Cryogenic Cooling, Earth Orbital Environments, Infrared Radiometers, Pressure Modulator Radiometers, Radiant Cooling, Mars Atmosphere, Mars Observer, Polar Orbits, Remote Sensing

Scientific paper

An existing operational low-earth-orbit radiative cooler is being upgraded for use on the Mars Observer polar-orbiting mission, using the Landsat Thematic Mapper cooler as a basis for upgrading. Significant improvements were achieved in the design of the thermal performance and vibration endurance, and in the mass minimization design. The cooler provides about 18 mW of useful refrigeration power in Mars orbit at its equilibrium operating temperature. The detector operating temperature for the worst-case orbital environment is about 73 K.

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