The Solar Shield: A Thermally Insulating, Broad-Band, Electromagnetic Window for Satellites
MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
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A space qualified, thermally insulating, broad-band, electromagnetic window for satellite applications is described. A multiple layer construction is used, with each layer consisting of quartz fiber paper sandwiched between two sheets of Kapton. The measured insertion loss is less than 0.25 dB at frequencies up to 50 GHz. When exposed to full solar radiation 127 Wsq ft., about Wsq ft. are transferred through the thickness of the window into a 20 C background in the interior of the satellite. Under eclipse conditions, about 3 Wsq ft. are radiated from the satellite into the cold space background compared with nearly 40 Wsq ft without the window. The reasons for this performance are explained, and detailed descriptions of the experimental evaluations are given. A brief summary of the space-qualification testing is also included.
- Unmanned Spacecraft