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Following the successful demonstration of the HAV-3 small-scale demonstrator, and with Northrop Grumman as the prime bidder, the hybrid airship concept was accepted for the US Long Endurance Multi-intelligence Vehicle (LEMV) project, in preference to the Lockheed Martin P-791 that had also been submitted. [8] [9]
Lockheed T-33: United States Trainer / Reconnaissance: T-33/RT-33 25 / 2 [49] in service from 1955 to 1970 - replaced by the Marchetti S.211: North American T-6: United States Trainer T-6G: 38 [49] retired from service North American T-28: United States Trainer T-28A/D: 20 / 24 [49] in service from 1970 until late 1992 Beechcraft T-34: Japan ...
The Lockheed Martin P-791 is an experimental aerostatic and aerodynamic hybrid airship developed by Lockheed Martin. The first flight of the P-791 took place on 31 January 2006 at the company's flight test facility at United States Air Force Plant 42 in Palmdale, CA.
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Long-range interceptor version of the P-38 Lightning: 21 Ventura: Twin-engine World War II patrol bomber 22 P-38 Lightning: Jan 27, 1939: Twin-engine World War II fighter 122: P-38 Lightning 1941: YP-38 through P-38D 222: P-38 Lightning P-38E through P-38H 322: P-322 Lightning Export variant, impressed into U.S. service at war's outbreak 422: P ...
In 2006, the Lockheed Martin P-791 underwent uncrewed flight tests. It was an unsuccessful candidate for the military Long Endurance Multi-intelligence Vehicle program even though it was the only successful Hybrid Airship to have ever flown until 7 August 2016.