Republic P-47 Thunderbolt variants
vairants of the P-47 Thunderbolt
The P-47 Thunderbolt is a World War II fighter aircraft built by Republic Aviation from 1941 to 1945.
Early designs
XP-47 (AP-10)
In response to a USAAC requirement for a new fighter aircraft, Republic Aviation engineer Alexander Kartveli proposed the AP-10 lightweight high-altitude interceptor on August 1, 1939. As originally proposed, the AP-10 was to have been powered by a 1,150 hp Allison V-1710-39 12-cylinder inline engine and have an armament consisting of two nose-mounted .50 in (12.7 mm) M2 Browning machine guns. Maximum speed was estimated to be 415 mph, while gross weight was to be 4,900 lb.
The USAAC was impressed by the AP-10 proposal, but expressed concerns that it would be underarmed. Kartveli revised the AP-10 by slightly increasing its size and mounting two .30 in (7.62 mm) M1919 Browning machine guns in each wing, raising the gross weight to 6,570 lb. Satisfied, the USAAC ordered a single prototype under the designation XP-47, in November 1939.
XP-47A
In addition to the XP-47, the USAAC also ordered another prototype as the XP-47A. This prototype was ordered without military equipment, allowing for it to be finished and tested before the XP-47.
In early 1940, combat reports from war in Europe indicated that the P-47 was inferior to Luftwaffe fighters. In response, the USAAC issued new requirements for a fighter including an airspeed of 400 mph at 25,000 ft, an armament of six or (preferably) eight .50 in machine guns, cockpit armor plating, self-sealing fuel tanks, and a minimum fuel load of 315 gallons.
The public source identifies “Republic P-47 Thunderbolt variants” as vairants of the P-47 Thunderbolt. This brief keeps that definition visible, then builds a research path around Republic, P-47 and Thunderbolt.
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