Advanced Land Observing Satellite (ALOS) that will be launched by Japanese Aerospace Exploration Agency in 2005 will carry a large solar paddle of 22m x 3m in polar orbit. The wake side of solar paddle can be charged to a highly negative value. Laboratory experiments are carried out to investigate charging and arcing phenomena on the backside of the solar paddle that has exposed bypath diode boards and Silver-Teflon(registered trademark) thermal coating. We irradiate solar panel coupons with an electron beam to simulate charging situation near the North Pole. Surface flashover is observed once the insulator potential exceeds -7kV. Possibility of sustained arc and surge voltage between hot and return ends of power circuit have been investigated.
Aurora charging of large solar panel of a polar orbit satellite
2004
10 Seiten, 9 Quellen
Aufsatz (Konferenz)
Englisch
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