Communications: directive radio wave systems and devices (e.g. – Radar reflector – Inflatable or collapsable
Patent
1991-08-23
1993-04-13
Tubbesing, T. H.
Communications: directive radio wave systems and devices (e.g.,
Radar reflector
Inflatable or collapsable
342 6, 343915, H01Q 1520
Patent
active
052026892
ABSTRACT:
An adjustable focal length reflector for operation in space includes a membrane having a reflective surface. The membrane is subjected to incident radiation pressure. An assembly is located at the perimeter of the membrane to exert force on the membrane to counteract the incident radiation pressure in order to vary the focal length of the reflective surface. In a preferred embodiment the assembly includes an inflatable torus whose internal pressure is varied to vary the amount of force exerted on the membrane.
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Bussard Robert W.
Wallace Thomas H.
APTI Inc.
Tubbesing T. H.
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