Republic Aviation - P-47 Thunderbolt

P-47 Thunderbolt

The USAAF refused to give Republic any money for the development of the new XP-47B, so Republic paid for the construction of the first mock-up, reusing the cockpit area of the P-43. By the time the prototype was ready for testing, it weighed over 12,550 lb., 900 lb (410 kg) over the Army's limit for the new fighter design, and far more than any single-engine fighter ever developed. It also could carry only 298 gallons of fuel, 17 gallons less than the requirement, but the Army was generally pleased with its performance, achieving speeds of 412 mph (663 km/h) at 25,800 ft (7,900 m), and overlooked these issues.

The U.S. entry into the war in December 1941 rapidly increased the need for the XP-47B and work on the plane progressed quickly. In June 1942, the Army took delivery of its first P-47Bs. They soon placed an order that required Republic Aviation to quadruple the size of their factory and build three new runways at the Farmingdale, New York factory. Eventually this proved inadequate, and in November 1942, the Army authorized the construction of a new factory adjacent to the Evansville, Indiana airport.

Throughout the war, the P-47 would undergo constant development. A bubble canopy was added to increase backward visibility. The final version of the P-47 would be the P-47N, a long-range version with longer wings and fuselage, and an increased fuel capacity. The P-47N was designed to escort B-29s on long missions to Japan for a planned invasion of the Japanese homeland that never came. Production of all versions ended in November 1945. By then, 15,660 P-47s had been built, making it the most produced U.S. fighter of the war. 1,816 would be the long range P-47N model. This model would continue to serve with Air Force Reserve and Air National Guard units until the mid 1950s.