Low cost deployable reflector

Details Low cost deployable reflector Low cost deployable reflector

1998-05-12

2000-08-15

Wimer, Michael C.

Communications: radio wave antennas

Antennas

Antenna components

H01Q 1500

Patent

active

061043583

ABSTRACT:
A deployable reflector having an umbrella-like structure in which a plurality of tubular parabolically curved ribs are connected end-wise to a central hub by associated strain energy hinges, which are flexible and spring-like in characteristic, creating a spring force when stressed. A thin pliant metal coated film material is shaped for expansion into a parabolic shape serves as the reflective surface. Rib anchors, suitably radially extending pockets, attached to the backside of the material receive the ribs that radially extend from the hub. When stowed and restrained, such as by a cable, the curved ribs are all held down, collapsing the parabolic shape of the material, and stressing the hinges, which produce a counter-biasing force. When the restraining force is released to deploy the reflector, the biasing force created in the spring-like flexible hinges automatically pivots the ribs outwardly, pulling the material into its parabolic shape.

REFERENCES:
patent: 3360798 (1967-12-01), Webb
patent: 3521290 (1970-07-01), Bahiman
patent: 3599218 (1971-08-01), Williamson
patent: 3670358 (1972-06-01), Schwartz
patent: 4030103 (1977-06-01), Campbell
patent: 4769647 (1988-09-01), Herbig et al.
patent: 4845511 (1989-07-01), Grayson et al.
patent: 5239793 (1993-08-01), Chiappetta
patent: 5488383 (1996-01-01), Friedman

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