Communications: radio wave antennas – Antennas – With support for antenna – reflector or director
Patent
1990-09-11
1992-06-23
Wimer, Michael C.
Communications: radio wave antennas
Antennas
With support for antenna, reflector or director
343880, 16286, H01Q 1120, E05F 1080
Patent
active
051247151
ABSTRACT:
Each antenna plane of a multi-layer radar membrane is secured at its edges to a hinge bar assembly. The purpose of the hinge bar assembly is to expand the layers, normally collapsed during a stowed condition, to parallel spaced layers when deployed. Each hinge assembly includes double bars pivotally mounted to a base section, the latter being snap-fastened to a ground plane. The ends of the hinge bars are snap-fastened to corresponding antenna plane strips and the central portion of each hinge bar has a spring extending outwardly therefrom for securement to a base abutment. Thus, when the membranes are freed from external restraint in preparation of deployment, the springs pivot the hinge bars to a generally perpendicular relationship with respect to the ground plane and antenna planes thus separating oppositely positioned antenna planes to the desired tensioned and parallel spaced relationship with respect to the ground plane.
REFERENCES:
patent: 4042991 (1977-08-01), Macy et al.
patent: 4715159 (1987-12-01), Hijazi
patent: 4814784 (1989-03-01), Pallmeyer
W. Schneider, Space Station Structures, Large Space Antenna Systems Tech.-1984 Dec. 4-6, 1984 pp. 375-389.
Brown Peter Toby
Grumman Aerospace Corporation
Wimer Michael C.
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