Aeronautics and astronautics – Missile stabilization or trajectory control – Automatic guidance
Patent
1989-06-29
1991-03-12
Hannaher, Constantine
Aeronautics and astronautics
Missile stabilization or trajectory control
Automatic guidance
250332, 250349, 250352, 25037008, 25037015, 337140, F42B 1501, H01H 7118
Patent
active
049986880
ABSTRACT:
A detector array assembly which provides for the closing at operating temperature of normally open contacts between individual sensor contact mesas and readout pads of the respective detector and readout chips comprising a detector array assembly. One or more shape memory separator elements are used in conjunction with one or more biasing springs to control the spacing of the contacts. The force of the biasing spring becomes the dominant force as the apparatus is cooled down to near operating temperature, thus moving the chips closer together and establishing reliable electrical connection between the opposed sets of contacts. At temperatures near and above the normal operating temperature of 77 degrees K., the shape memory separator element provides the dominant force and drives the chips apart to open the contacts.
REFERENCES:
patent: 4039833 (1977-08-01), Thom
patent: 4304294 (1981-12-01), Reisman et al.
patent: 4695715 (1987-09-01), Malm
D'Agostino Saverio A.
Longerich Ernest P.
Brown C. D.
Denson-Low W. K.
Hannaher Constantine
Heald R. M.
Hughes Aircraft Company
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