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Posted 11/2/2009 Printable Fact Sheet
Lockheed XP-49
Lockheed XP-49 3/4 front view. (U.S. Air Force photo)
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The XP-49, Lockheed Model 222, was developed as a possible successor to the P-38 and won a design competition in August 1939. The aircraft was originally designed for Pratt & Whitney X-1800 engines (24 cylinders and 2,300 hp each), but after development problems with these engines, Continental "Hyper" engines were substituted, requiring lengthened nacelles to re-balance the aircraft for the lighter XI-1430s.

The XP-49 first flew on Nov. 11, 1942. Flight testing revealed undersized vertical stabilizers, which were then enlarged to increase stability. (XP-49 Trivia: The rudders were not repainted after the modification; two more stripes were added to fill the space -- 15 instead of the standard 13.) The XP-49 wasn't significantly better than the P-38 and never entered production.

Type Number built/
XP-49 1 Improved P-38 (S/N 40-3055)

Armament: Designed for two 20mm cannon and four .50-cal. machine guns although no armament was actually installed on the aircraft
Engines: Two Continental XI-1430-1 of 1,600 hp
Maximum speed: 406 mph. at 15,000 ft.
Span: 52 ft. 0 in.
Length: 40 ft. 1 in.
Height: 9 ft. 9.5 in.
Weight: 15,475 lbs. empty/18,750 lbs. gross

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