Lockheed-Martin P 791

The P-791 is an experimental aerostatic/aerodynamic hybrid airship developed by Lockheed-Martin corporation. The first flight of the P-791 was made on 31 January 2006 at the company's flight test facility on the Palmdale Air Force Plant 42. In such designs, part of the weight of the craft and its payload are supported by aerostatic (buoyant) lift. Critics of the hybrid approach are: difficult to control and protect on the ground, and have relatively poor aerodynamic performance.

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