The Curtiss P-37 was an American fighter aircraft made by Curtiss-Wright in 1937 for the US Army Air Corps. A development of the Curtiss P-36 Hawk to use an inline engine instead of the radial engine of the P-36 the fuselage was lengthened and the cockpit moved back. A small number of YP-37 aircraft was built for Air Corps evaluation. The expected top speed was not achieved and the project terminated in favor of the Curtiss P-40.
In early 1937, after realizing the P-36 Hawk was inferior to more modern European designs, the USAAC ordered Curtiss to adapt one P-36 to the new liquid-cooled turbo-supercharged Allison V-1710. The prototype Hawk was fitted with a turbo-supercharged 1,150 hp (860 kW) Allison V-1710-11 as the XP-37 (company designation Model 75I). The cockpit was moved back towards the tail to make room for the massive turbo-superchargers, and the engine was cooled by two radiators on either side of the nose. Armament was one 0.30 in (7.62 mm) M1919 Browning machine gun and one 0.50 in (12.70 mm) M2 Browning heavy machine gun mounted in the nose.[1]
Although the turbo-supercharger was extremely unreliable and visibility from the cockpit on takeoff and landing was virtually nonexistent, the USAAC was sufficiently intrigued by the promised performance to order 13 service test YP-37s and spares at a contract cost of $531,305.12 in 1938.[2] These aircraft were powered by an improved V-1710-21 with a more reliable supercharger mounted in a lengthened nose. However, reliability problems and poor visibility continued to plague the YP-37, and the project was canceled in favor of a parallel development, the P-40 Warhawk.[1]
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^ abBowers, Peter M. (1987). Curtiss aircraft, 1907-1947. London: Putnam. pp. 348–365. ISBN9780851778112.
^"ARMY AIR CORPS BUYS PURSUIT AIRPLANES". Air Corps News Letter. Air Corps Munitions Building, Washington, D.C.: Information Division USAAC. XXI (1): 2. 1 January 1938.
^Bowers, Peter M. (1987). Curtiss aircraft, 1907-1947. London: Putnam. p. 365. ISBN9780851778112.
^Baugher, Joe. "Curtiss XP-37". www.joebaugher.com. Retrieved 22 March 2019.
^Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Retrieved 16 April 2019.
January 21, 2023
curtiss, curtiss, american, fighter, aircraft, made, curtiss, wright, 1937, army, corps, development, curtiss, hawk, inline, engine, instead, radial, engine, fuselage, lengthened, cockpit, moved, back, small, number, aircraft, built, corps, evaluation, expecte. The Curtiss P 37 was an American fighter aircraft made by Curtiss Wright in 1937 for the US Army Air Corps A development of the Curtiss P 36 Hawk to use an inline engine instead of the radial engine of the P 36 the fuselage was lengthened and the cockpit moved back A small number of YP 37 aircraft was built for Air Corps evaluation The expected top speed was not achieved and the project terminated in favor of the Curtiss P 40 P 37Curtiss YP 37Role FighterNational origin United StatesManufacturer Curtiss Wright CorporationFirst flight April 1937Primary user United States Army Air Corps USAAC Number built 14Developed from Curtiss P 36 Hawk Contents 1 Design and development 2 Variants 3 Specifications YP 37 4 See also 5 ReferencesDesign and development EditIn early 1937 after realizing the P 36 Hawk was inferior to more modern European designs the USAAC ordered Curtiss to adapt one P 36 to the new liquid cooled turbo supercharged Allison V 1710 The prototype Hawk was fitted with a turbo supercharged 1 150 hp 860 kW Allison V 1710 11 as the XP 37 company designation Model 75I The cockpit was moved back towards the tail to make room for the massive turbo superchargers and the engine was cooled by two radiators on either side of the nose Armament was one 0 30 in 7 62 mm M1919 Browning machine gun and one 0 50 in 12 70 mm M2 Browning heavy machine gun mounted in the nose 1 Although the turbo supercharger was extremely unreliable and visibility from the cockpit on takeoff and landing was virtually nonexistent the USAAC was sufficiently intrigued by the promised performance to order 13 service test YP 37s and spares at a contract cost of 531 305 12 in 1938 2 These aircraft were powered by an improved V 1710 21 with a more reliable supercharger mounted in a lengthened nose However reliability problems and poor visibility continued to plague the YP 37 and the project was canceled in favor of a parallel development the P 40 Warhawk 1 Variants EditMain article Curtiss P 40 Warhawk variants XP 37 One aircraft built with a V 1710 11 engine YP 37 13 aircraft built with a V 1710 21 engines and extended fuselageSpecifications YP 37 EditData from Curtiss aircraft 1907 1947 3 Baugher Curtiss XP 37 4 General characteristicsCrew 1 Length 32 ft 11 5 in 10 046 m Wingspan 37 ft 3 5 in 11 367 m Height 11 ft 1 in 3 38 m Wing area 236 sq ft 21 9 m2 Airfoil root NACA 2215 tip NACA 2209 5 Empty weight 5 592 lb 2 536 kg Gross weight 6 700 lb 3 039 kg Powerplant 1 Allison V 1710 21 V 12 liquid ciooled piston engine 1 000 hp 750 kW Propellers 3 bladed Curtiss electric constant speed propellerPerformance Maximum speed 340 mph 550 km h 300 kn at 10 000 ft 3 000 m 331 mph 288 kn 533 km h at 20 000 ft 6 100 m dd dd dd Cruise speed 305 mph 491 km h 265 kn Range 570 mi 920 km 500 nmi Service ceiling 34 000 ft 10 000 m Rate of climb 2 920 ft min 14 8 m s Time to altitude 20 000 ft 6 100 m in 8 minutes 30 secArmament Guns 1 x 0 30 in 7 62 mm M1919 Browning machine gun and 1 x 0 50 in 12 7 mm M2 Browning machine gunSee also Edit Aviation portalRelated development Curtiss P 36 Hawk Curtiss P 40 Warhawk Curtiss XP 42 Curtiss XP 46 Curtiss P 60References Edit Wikimedia Commons has media related to Curtiss P 37 a b Bowers Peter M 1987 Curtiss aircraft 1907 1947 London Putnam pp 348 365 ISBN 9780851778112 ARMY AIR CORPS BUYS PURSUIT AIRPLANES Air Corps News Letter Air Corps Munitions Building Washington D C Information Division USAAC XXI 1 2 1 January 1938 Bowers Peter M 1987 Curtiss aircraft 1907 1947 London Putnam p 365 ISBN 9780851778112 Baugher Joe Curtiss XP 37 www joebaugher com Retrieved 22 March 2019 Lednicer David The Incomplete Guide to Airfoil Usage m selig ae illinois edu Retrieved 16 April 2019 Retrieved from https en wikipedia org w index php title Curtiss YP 37 amp oldid 1101586308, wikipedia, wiki, book, books, library,
