Lockheed Martin Low Observability Patent (USRE36298)

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Wingknut

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As always, sorry if this is old news but anyway:

‘Vehicle’, US RE36298 E

Publication date: 14th September 1999; Filing date: 5th October 1995; Priority date: 13th February 1979
Also published as: US5250950
Inventors: Richard Scherrer, Denys D. Overholser, Kenneth E. Watson
Original Assignee: Lockheed Martin Corporation

“Stealth vehicles of the prior art, while often being treated with antireflective coatings in an effort to reduce their vulnerability to detection, have nevertheless remained relatively detectable. This detectability is an inherent characteristic of the vehicle shape and, since vehicle shape has usually been determined by design criteria other than stealth, large radar cross sections result. Thus due to improperly shaped vehicles, radar cross section reduction has been only marginally successful. The success of such vehicles penetrating enemy territory can be significantly enhanced if radar detection ranges can be shortened or eliminated by reducing radar cross section which in turn reduces the signal at the radar receiver.

Accordingly, it is a general object of this invention to provide a vehicle whose external surfaces are configured to make such vehicles substantially invisible to radar by reducing the signal received below receiver sensitivity levels and/or clutter.”

http://www.google.co.uk/patents/USRE36298
http://www.google.co.uk/patents/US5250950
 

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