1942 fighter aircraft prototype
Also known as Lockheed Model 522 · Lockheed 522 · XP-49 aircraft · P-49 aircraft · P49 · Experimental Pursuit Design 49
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The Lockheed XP-49 was an advancement on the P-38 Lightning for a fighter in response to U.S. Army Air Corps proposal 39-775. Intended to use the new 24-cylinder Pratt & Whitney X-1800 engine, this proposal, which was for an aircraft substantially similar to the P-38, was assigned the designation XP-49, while the competing Grumman Model G-46 was awarded second place and designated XP-50.