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Contents

   



(Top)
 


1 Design and development  





2 Operators  





3 Variants  





4 Specifications (YOA-5)  





5 See also  





6 References  



6.1  Bibliography  







7 External links  














Douglas YOA-5






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YOA-5
Role Seaplane bomber
Manufacturer Douglas Aircraft Company
First flight 1935
Introduction 1935
Retired 1943
Status Prototype
Primary user United States Army Air Corps
Number built 1
Developed from Douglas XP3D

The Douglas YOA-5 was an amphibious aircraft designed for the United States Army Air Corps, based on the Navy's Douglas XP3D.[1] Although a prototype was built, it did not enter production.

Design and development[edit]

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.[2]

Prior to completion, it was redesignated firstly as an observation aircraft YO-44 and then as the YOA-5 'observation amphibian model 5'.[3] It first flew during January 1935, and was delivered to the army during February that year.[2] 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.[4]

Operators[edit]

 United States

Variants[edit]

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 930 hp (690 kW) Wright YR-1820-45 Cyclone engines for experimental long-range flying, then re-engined again with 750 hp (560 kW) Wright R-1820-25 Cyclones.

Specifications (YOA-5)[edit]

Data from McDonnell Douglas aircraft since 1920 : Volume I[5]

General characteristics

Performance

Armament

See also[edit]

Related lists

References[edit]

  1. ^ "Fact Sheets: Douglas YB-11". National Museum of the United States Air Force™. Archived from the original on 26 Aug 2007.
  • ^ a b Francillon 1979, p.192.
  • ^ Wagner, Ray, American Combat Planes, 1981, Doubleday & Company, Garden City, New York, ISBN 9780385131209, page 307
  • ^ Francillon 1979, pp. 192–193.
  • ^ Francillon, René J. (1988). McDonnell Douglas aircraft since 1920 : Volume I. London: Naval Institute Press. pp. 184–193. ISBN 0870214284.
  • Bibliography[edit]

    External links[edit]


    Retrieved from "https://en.wikipedia.org/w/index.php?title=Douglas_YOA-5&oldid=1221368043"

    Categories: 
    Douglas aircraft
    1930s United States bomber aircraft
    High-wing aircraft
    Amphibious aircraft
    Aircraft first flown in 1935
    Twin piston-engined tractor aircraft
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    Articles with short description
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