avia.wikisort.org - AeroplaneThe Curtiss YP-20 was an American biplane fighter project developed by Curtiss for the United States Army Air Service.
Prototype biplane fighter
Design and development
In 1929, three Curtiss P-11 Hawks were ordered with 600 hp (447 kW) Curtiss H-1640 Chieftain engines. These proved a failure, and before completion, the third was converted to use a 9-cylinder 575 hp (429 kW) Wright Cyclone, being completed as the YP-20. Testing with the R1820 was prolonged, so the Army's intention to promptly switch to a Curtiss V-1570 Conqueror engine and redesignate the aircraft XP-22 was dropped; another P-11 was chosen for that instead.
Except for the engine change and its Townend ring cowling, the YP-20 was not drastically different from the P-6 from which both it and the P-11 derived, though the YP-20 had more fin and less rudder area,[1] and featured a steerable tailwheel, rather than the original skid.[2] Later, a crankcase cover, gear strut fairings, and wheel pants were added.
In June 1931, the AAC held a competition to evaluate the P-6, P-12, XP-22, and YP-20. The XP-22 came out the winner, but the YP-20 was given a nose and landing gear graft from the XP-22, becoming the XP-6E (P-6E prototype). With the addition of a supercharger and an enclosed cockpit, it was tested as the XP-6F.
Operators
United States
- United States Army Air Service
Specifications (original YP-20)
Data from Curtiss Aircraft 1907–1947[3]
General characteristics
- Crew: 1
- Length: 23 ft 0 in (7.01 m)
- Wingspan: 31 ft 6 in (9.60 m)
- Height: 9 ft 3 in (2.82 m)
- Wing area: 252 sq ft (23.4 m2)
- Airfoil: 'Clark Y[4]
- Empty weight: 2,523 lb (1,144 kg)
- Gross weight: 3,231 lb (1,466 kg)
- Powerplant: 1 × Wright R-1820-9 Cyclone 9-cylinder air-cooled radial piston engine, 650 hp (480 kW)
- Propellers: 2-bladed fixed-pitch propeller
Performance
- Maximum speed: 188.6 mph (303.5 km/h, 163.9 kn)
- Cruise speed: 150 mph (240 km/h, 130 kn)
- Range: 237 mi (381 km, 206 nmi)
- Service ceiling: 27,800 ft (8,500 m)
- Rate of climb: 2,600 ft/min (13 m/s)
Armament
References
- Fitzsimons, Bernard, ed. Illustrated Encyclopedia of Weapons and Warfare (London: Phoebus, 1978), Volume 12, p.1255.
- Fitzsimons, p.1255.
- Bowers, Peter M. (1979). Curtiss aircraft, 1907-1947. London: Putnam. pp. 256–266. ISBN 0370100298.
- Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Retrieved 16 April 2019.
Further reading
- Fitzsimons, Bernard, ed. Illustrated Encyclopedia of Weapons and Warfare. Volume 12, pp. 1255–6, "Hawk, Curtiss Models 34 and 35 (P-1 to P-6 and F6C". London: Phoebus Publishing, 1978.
- Donald, David, ed. Encyclopedia of World Aircraft. Etobicoke, ON: Prospero Books, 1997.
- Jones, Lloyd S. U.S. Fighters. Fallbrook, CA: Aero Publishers, 1975.
|
---|
Manufacturer designations | Early types | |
---|
Model letters | |
---|
Model numbers | |
---|
"L" series | |
---|
"CA" series | |
---|
"CR" series | |
---|
"CW" series | |
---|
"P" series |
- P-200
- P-202
- P-212
- P-218
- P-219
- P-222
- P-223
- P-224
- P-225
- P-227
- P-228
- P-229
- P-232
- P-235
- P-238
- P-239
- P-240
- P-241
- P-243
- P-244
- P-245
- P-247
- P-248
- P-249
- P-250
- P-251
- P-252
- P-253
- P-254
- P-255
- P-256
- P-257
- P-259
- P-261
- P-264
- P-268
- P-269
- P-272
- P-273
- P-274
- P-275
- P-276
- P-277
- P-278
- P-279
- P-280
- P-282
- P-283
- P-291
- P-292
- P-293
- P-295
- P-296
- P-297
- P-298
- P-299
- P-302
- P-303
- P-304
- P-305
- P-306
- P-307
- P-509
- P-517
- P-518
- P-538
- P-539
- P-541
- P-545
- P-551
- P-558
- P-565
- P-586
- P-588
- P-592
|
---|
"X" series | |
---|
|
---|
Operator and role | Civil | Experimental | |
---|
Racers and record | |
---|
Airliners | |
---|
Utility | |
---|
|
---|
Army | Ground attack | |
---|
Bombers | |
---|
Transports | |
---|
Fighters | |
---|
Observation | |
---|
Racers | |
---|
Trainers | |
---|
Experimental | |
---|
Licensed | |
---|
|
---|
Navy | Bombers | |
---|
Fighters | |
---|
Observation/scout | |
---|
Trainers | |
---|
Transports | |
---|
Maritime patrol | |
---|
Racers and record | |
---|
|
---|
Export | Bombers | |
---|
Maritime patrol | |
---|
Fighters | |
---|
Trainers | |
---|
|
---|
|
---|
1 Designation skipped 2 Not built |
USAAS/USAAC/USAAF/USAF fighter designations 1924–1962, and Tri-Service post-1962 systems |
---|
1924 sequences (1924–1962) | Pursuit (1924–1948) | |
---|
Fighter (1948–1962) | |
---|
Pursuit, Biplace | |
---|
Fighter, Multiplace | |
---|
Non-sequential | |
---|
|
---|
Tri-service sequence (1962–present) | Main sequence | |
---|
Non-sequential | |
---|
|
---|
Covert designations |
- YF-110
- YF-113 (I)
- YF-113 (II)
- YF-113 (III)
- YF-114
- YF-117
- YF-118
|
---|
Related designations | |
---|
1 Not assigned • 2 Unofficial • 3 Assigned to multiple types See also: "F-19" • 1919-1924 sequence |
На других языках
- [en] Curtiss YP-20
[it] Curtiss YP-20
Il Curtiss YP-20, fu un aereo da caccia monomotore, monoposto e biplano sviluppato dall'azienda aeronautica statunitense Curtiss Aeroplane and Motor Company negli anni venti del XX secolo e rimasto allo stadio di prototipo.
Текст в блоке "Читать" взят с сайта "Википедия" и доступен по лицензии Creative Commons Attribution-ShareAlike; в отдельных случаях могут действовать дополнительные условия.
Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
2019-2025
WikiSort.org - проект по пересортировке и дополнению контента Википедии