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Republic P-47 Thunderbolt


P-47D Thunderbolt

The P-43 Lancer design developed further into the P-47 Thunderbolt for USAAF. First flew in its XP-47B prototype form on 6 May 1941.

The P-47C had a mach .73 (556 mph) terminal dive and a .69 (525 mph) redline.

A dorsal fin was added to compensate for the loss of aft keel surface and introduced on P-47D-27-RE and subsequent batches. P-47D had a mach .72 (550 mph) red-line dive speed and rolled 91 d/s @ 300 mph


In 1943, two P-47D-15-RE airframes (serials 42-23297/23298) were selected for testing with the new experimental 2300 hp Chrysler XIV-2220-1 sixteen-cylinder inverted Vee liquid-cooled engine. These aircraft were redesignated XP-47H. The liquid-cooled Chrysler engine with its large under-fuselage radiator radically changed the appearance of the Thunderbolt, and increased overall length to 39 feet 2 inches. With the increased power and improved streamlining, a maximum speed of 490 mph was anticipated.

Although the project was begun in August 1943, the two P-47D-15-RE airframes were not actually converted until 1945. Test flights began on July 26, 1945. One of the XP-47Hs actually attained a speed of 490 mph in level flight. The Chrysler engine failed to deliver the promised power output, and the maximum speed attained during tests was only 414 mph at 30,000 feet, poorer performance than the "stock" P-47D. In any case, the Chrysler XIV-2220 engine never achieved production and the advent of jet propulsion killed any further USAAF interest in the development of even faster piston-engined fighters. Consequently, no further work was undertaken on the XP-47H project.

The XP-47J differed from other Thunderbolts in its engine, being powered by a ‘C’ series Double Wasp or Pratt & Whitney R-2800-57 driving a four-blade 13-ft Curtiss Electric propeller employed after a plan to try out a contra-rotating propeller was dropped. But the XP-47J also had a distinctive cowling shape with an engine-cooling fan below and set back from the propeller hub. And there were other differences from standard Thunderbolts, some trivial: the six .50-calibre guns with 267 rounds per gun protruded from the wing leading edge in a different manner from those of other P-47s. The XP-47J was first flown on August 2, 1944 at the manufacturer’s Long Island, New York, facility and subsequently evaluated at Wright Field, Ohio. Apart from its remarkable high speed, the XP-47J could climb at 4,705 ft/min, reached a speed of 811kph, and the service ceiling was 45,000ft. Maximum range was 1,070 miles at 10,000ft. The XP-47J did not enter production.

XP 47J

P-47M had a P&W R2800-56.

Modified with longer, stronger wings, the P-47N could carry additional fuel for long distances flown in the Pacific War. Some 1,816 of this last production version were built. The P-47N dove to mach .83 (632 mph)


XP-47N Thunderbolt


Production began at Republic's plant in Farmingdale, though others were also built at a Republic factory in Evansville, Indiana, and by Curtiss-Wright in Buffalo, New York. A total of 15,863 built, of which 15,329 were built during Second World War.





Engine: 1 x Pratt & Whitney R-2800-59W Double Wasp, 1890kW / 2800 hp
Propeller: Hamilton Standard 24E50, 6507 A. O.
Wingspan: 12.43 m / 41 ft 9 in
Length: 11.02 m / 36 ft 2 in
Wing area: 27.87 sq.m / 299.99 sq ft
Max take-off weight: 7938 kg / 17500 lb
Empty weight: 4513 kg / 9950 lb
Max. speed: 697 km/h / 433 mph
Ceiling: 12495 m / 41000 ft
Range w/max.fuel: 3058 km / 1900 miles
Crew: 1
Armament: 8 x 12.7mm machine-guns, 1134kg of weapons

Republic P-47D-28-RA
Engine; 1 x 2,430 h.p. Pratt & Whitney R-2800-59 radial
Prop; 13ft-diameter Curtiss Electric C5425-AI14
Wingspan; 40ft 9.5in
Length; 36ft 1.75in
Height; 14ft 0in
Wing area; 300 sq.ft
Empty weight; 10,0001b
Gross weight; 14,5001b
Maximum weight; 17,5001b
Maximum speed; 423 m.p.h. at 30,000ft
Landing speed; 105 m.p.h.
Climb to 15,000ft; 6.2min
Climb to 20,000ft; 8.5min
Climb to 25,000ft; 11 min
Climb to 30,000ft; 14min
Service ceiling; 42,000ft
Maximum range; 1,030 miles at 10,000ft (5.3hr)
Normal range; 590 miles at 25,000ft
Armament; 6 or 8 x 0.50in machine guns 267-425 rounds per gun
Maximum bomb load; 2,5001b
Number built 1,028 P-47D-28-RA at Evansville, Indiana, USA

Engine: R2800, 2300 hp
Max speed: 433 mph @ 30,000ft
Service ceiling: 40,000 ft.  

Top speed: 473 mph.

Republic P 47 N Thunderbolt
Engine : Pratt&Whitney R 2800-77, 2762 hp
Length: 36.089 ft / 11.0 m
Height : 14.567 ft / 4.44 m
Wingspan : 42.585 ft / 12.98 m
Wing area : 321.951 sq.ft / 29.91 sq.m
Max take off weight : 21695.0 lb / 9839.0 kg
Weight empty : 11003.0 lb / 4990.0 kg
Max. speed : 406 kt / 752 km/h
Cruising speed : 261 kt / 483 km/h
Service ceiling : 42995 ft / 13105 m
Wing load : 67.45 lb/sq.ft / 329.0 kg/sq.m
Range : 695 nm / 1287 km
Crew : 1
Armament : 6-8x cal.50MG (12,7mm), 907kg ext. (Bomb./Rockt.)

Engine: Chrysler.

Max speed: 504 mph
ROC: 4705 fpm
Service ceiling: 45,000 ft
Max range: 1070 miles


Republic P-47 Thunderbolt







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