Electricity: electrothermally or thermally actuated switches – Thermally actuated switches – With fusible – combustible or explosive material
Patent
1999-08-11
2000-10-17
Picard, Leo P.
Electricity: electrothermally or thermally actuated switches
Thermally actuated switches
With fusible, combustible or explosive material
337 1, 337 5, 337140, 74 2, 403 2, 403 28, G05G 1700, A62C 3704
Patent
active
061338184
ABSTRACT:
A highly reliable release apparatus which is used to stow or release desired devices such as, for example, solar arrays, antenna positioning mechanisms, reflectors, found on satellites, space stations or spacecraft. Deployment of the desired device is prevented or allowed by respectively restraining or releasing a first member under tension. The apparatus comprises a support member having an opening and a first face arranged about the opening. A second member is located within the opening when the first member is in tension and is adapted to be attached to an end of the first member. At least three locking members such as fuse wires are arranged on the first face of said support member for restraining the second member within the opening in order to maintain tension on the first member. The second member is attached to the first member in a manner such that at least two of the fuse wires must be severed before the restraint on the second member is released. A system is provided for actuating the release apparatus by selectively severing at least two of the locking members when deployment of the device is desired.
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Baghdasarian Varouj G.
Hsieh Cindy Hsin-I
Picard Leo P.
Space Systems Loral, Inc.
Vortman Anatoly
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