Sun-synchronous sun ray blocking device for use in a spacecraft

Aeronautics and astronautics – Spacecraft – With payload accommodation

Patent

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B64G 144

Patent

active

061023396

ABSTRACT:
A sun-synchronous sun ray blocking device for use in a spacecraft having a directionally controlled main body, such as a low inclination angle earth (as well as other planets) orbit spacecraft, that is, a three axis stabilized spacecraft having north, south, east, west, earth and anti-earth panels defining a spacecraft main body. The north and south panels, on which the spacecraft equipment with high heat dissipation is usually mounted, have their planar normal axes relatively parallel to the spinning axis of the earth. Normal to each of the north and south panel, a solar panel loaded with solar cells is extended and is directly rotating about the same axis. The solar panels are controlled in such a way that the solar cells side of the panels always faces the sun. Each solar panel's blocking device is situated between the solar panel and sun, attached to its solar panel and rotated therewith, to block the sunlight from the north and south panels, providing a stable, benign thermal environment for those panels.

REFERENCES:
patent: 3715600 (1973-02-01), Fletcher et al.
patent: 4133502 (1979-01-01), Anchutin
patent: 4262867 (1981-04-01), Piening
patent: 4508297 (1985-04-01), Moulihayrat et al.
patent: 4725023 (1988-02-01), Shiki
patent: 5372183 (1994-12-01), Strickberger

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