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38 Kill USAAF Tommy McGuire in Cockpit of His P-38 Lightning December 44 | eBay

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In the spring of 1939, the Air Corps issued a request for an advanced twin-engine interceptor, to be derived from an existing type and fitted with advanced high-performance engines. Lockheed responded to the request with the "Model 222", which was much like a P-38 except that it had a pressurized cabin and was to be powered by 24-cylinder inline Pratt & Whitney X-1800-SA2-G engines, which were in development and were expected to provide over 1,490 kW (2,000 HP). The Model 222 was to be armed with four 12.7 millimeter and two 20 millimeter guns, and a P-38G was modified to test this armament fit.
The Model 222 won the competition, with the Air Corps ordering a single prototype as the "XP-49" in October 1939. Lockheed proposed that production P-49s be fitted with turbocharged Wright R-2160 Tornado radials with 1,715 kW (2,300 HP) each, which would give the P-49 an estimated performance of 800 KPH (500 MPH) at altitude.
Work on the XP-49 went slowly as Lockheed was caught up in the prewar US military buildup. As development work plodded along, both the Air Corps and Lockheed began to have doubts for various reasons about the powerful engines to be fitted to the aircraft, and so the design was changed to incorporate two Continental XIV-1430-9/11 12-cylinder inverted-vee engines with 1,150 kW (1,540 HP) each for takeoff.
Engine availability further delayed development of the aircraft, and the XP-49 didn't take to the air until April 1942. The XP-49 looked much like a P-38, except for increased length and longer nacelles, and in fact the two aircraft shared about two-thirds of their parts. The aircraft was evaluated into the summer of 1943, but the Continental engines were troublesome.
LOCKHEED XP-49:
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spec english
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wingspan 52 feet
wing area 327.5 sq_feet
length 40 feet 1 inch
height 9 feet 10 inches


empty weight 15,475 pounds
max takeoff weight 18,750 pounds


maximum speed 458 MPH / 398 KT
service ceiling 40,000 feet
range 800 MI / 649 NMI
__https://www.456fis.org/LOCKHEED_XP-49.htm___________________ _______________________
 

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