Browse Publications Technical Papers 2003-01-2421
2003-07-07

In-Flight Thermal Performance of the Geoscience Laser Altimeter System (GLAS) Instrument 2003-01-2421

The Geoscience Laser Altimeter System (GLAS) instrument is NASA Goddard Space Flight Center's first application of Loop Heat Pipe technology that provides selectable/stable temperature levels for the lasers and other electronics over a widely varying mission environment.
GLAS was successfully launched as the sole science instrument aboard the Ice, Clouds, and Land Elevation Satellite (ICESat) from Vandenberg AFB at 4:45pm PST on January 12, 2003. After SC commissioning, the LHPs started easily and have provided selectable and stable temperatures for the lasers and other electronics.
This paper discusses the thermal development background and testing, along with details of early flight thermal performance data.

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