Английская Википедия:Douglas YOA-5
The Douglas YOA-5 was an Amphibious aircraft designed for the United States Army Air Corps. Although a prototype was built, it did not enter production.
Design and development
In November 1932, the U.S. Army ordered the development of an amphibious reconnaissance aircraft/bomber, intended to act as navigation leaders and rescue aircraft for formations of conventional bombers. The resultant aircraft, which was ordered under the bomber designation YB-11, was designed in parallel with the similar but larger Douglas XP3D patrol flying boat for the United States Navy. It was a high-winged monoplane with two Wright R-1820 Cyclone radial engines mounted in individual nacelles above the wing, resembling an enlarged version of the Douglas Dolphin.[1]
Prior to completion, it was redesignated firstly as an observation aircraft YO-44 and then as the YOA-5 'observation amphibian model 5'.[2] It first flew during January 1935, and was delivered to the army during February that year.[1] The concept for which it was designed proved impracticable, and no further production ensued, but the YOA-5 was used to set two world distance records for amphibians, being finally scrapped in December 1943.[3]
Operators
Variants
- YB-11
- An amphibious reconnaissance bomber ordered in 1932 by the US Army Air Corps, powered by 2x Wright R-1820-13 Cyclone radial engines.
- YO-44
- The YB-11 redesignated in the Observation category before completion.
- YOA-5
- Another redesignation to the Observation Amphibian category. One built, given the aforementioned designations at various times in its life. The YOA-5 started life with Wright R-1820-13 Cyclone engines, was re-engined with Шаблон:Cvt Wright YR-1820-45 Cyclone engines for experimental long-range flying, then re-engined again with Шаблон:Cvt Wright R-1820-25 Cyclones.
Specifications (YOA-5)
See also
References
Bibliography
- Francillon, René. McDonnell Douglas Aircraft since 1920. London:Putnam, 1979. Шаблон:ISBN.
External links
Шаблон:Douglas aircraft Шаблон:USAF bomber aircraft Шаблон:USAAF observation aircraft Шаблон:USAF amphibious aircraft
- ↑ 1,0 1,1 Francillon 1979, p.192.
- ↑ Wagner, Ray, American Combat Planes, 1981, Doubleday & Company, Garden City, New York, Шаблон:ISBN, page 307
- ↑ Francillon 1979, pp. 192–193.
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