The Lockheed XH-51 was an American single-engine experimental helicopter designed by Lockheed Aircraft, utilizing a rigid rotor and retractable skid landing gear. The XH-51 was selected as the test vehicle for a joint research program conducted by the United States Army and United States Navy to explore rigid rotor technology.
Lockheed XH-51
The first XH-51A landing on USS Ozbourn (DD-846).
The three XH-51s in flight.
The Lockheed Corporation was an American aerospace manufacturer. Lockheed was founded in 1926 and merged in 1995 with Martin Marietta to form Lockheed Martin. Its founder, Allan Lockheed, had earlier founded the similarly named but otherwise-unrelated Loughead Aircraft Manufacturing Company, which was operational from 1912 to 1920.
P-38J Lightning Yippee
P-38 Lightning assembly line at the Lockheed plant, Burbank, California, in World War II. In June 1943, this assembly line was reconfigured into a mechanized line, which more than doubled the rate of production. The transition to the new system was accomplished in only eight days. During this time production never stopped. It was continued outdoors.
A Lockheed L-049 Constellation sporting the livery of Trans World Airlines at the Pima Air & Space Museum
The Lockheed U-2, which first flew in 1955, provided intelligence on Soviet bloc countries.