View source for Engineering:Douglas O2D

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{{Infobox aircraft
| name                = O2D
| logo                = 
| logo_size           = 
| image               = Ray Wagner Collection Photo (15465800034).jpg
| alt                 = 
| caption             = 
| long_caption        = 
| other_names         = 
| aircraft_type       = Observation [[Engineering:Floatplane|floatplane]]
| aim                 = 
| outcome             = 
| related             = 
| national_origin     = United States of America
| manufacturer        = [[Company:Douglas Aircraft Company|Douglas Aircraft Company]]
| design_group        = 
| designer            = 
| builder             = 
| issuer              = 
| status              = Prototype
| owners              = 
| primary_user        = 
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| service             = 
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| prototypes          = 
| number_built        = 1
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| requirement         = 
| aircraft_carried    = 
| flights             = 
| total_hours         = 
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| construction_date   = 
| introduction        = 
| retired             = 
| first_flight        = March 1934
| initiated           = 
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}}
The Douglas '''XO2D-1''' was a prototype American observation [[Engineering:Floatplane|floatplane]] of the 1930s.  It was a single engined [[Engineering:Biplane|biplane]] intended to be launched by aircraft catapult from ships of the United States Navy, but only one was built, the production contract going to [[Company:Curtiss-Wright|Curtiss]] for the SOC Seagull.

==Development and design==
In 1933, the United States Navy had a requirement to replace its Vought O3U Corsair as the standard aircraft catapult launched observation aircraft aboard US Navy ships, and in June of that year it placed an order for a single example of a design from [[Company:Douglas Aircraft Company|Douglas Aircraft Company]], the XO2D-1, together with aircraft from Curtiss (the XO3C-1) and Vought (the [[Engineering:Vought O5U|XO5U-1]]). Douglas's design was a single engined [[Engineering:Biplane|biplane]] with single-bay wings of sesquiplane configuration that folded for shipboard storage. It was of all-metal construction, and housed the crew of two in tandem under an enclosed canopy.  It was powered by a Pratt & Whitney Wasp radial engine, and to allow easy operation from land, was fitted with a [[Engineering:Conventional landing gear|tailwheel undercarriage]] whose twin mainwheels retracted into the single main float.<ref name="Franc p176-7">Francillon 1979, pp. 176–177.</ref>

It was first flown in March 1934,<ref name="Franc p177">Francillon 1979, p.177.</ref> being tested at Anacostia and Naval Air Station Norfolk. It was rejected in favour of the Curtiss design, which was ordered into production as the SOC Seagull in March 1935.<ref name="Franc p177"/>  After further testing it was withdrawn from use on 13 September 1935.<ref name="Franc p177-8">Francillon 1979, pp. 177–178.</ref>

==Specifications (XO2D-1) ==
{{Aircraft specs
|ref=McDonnell Douglas Aircraft since 1920 <ref name="Frac p178">Francillon 1979, p.178.</ref> 
|prime units?=kts
<!--
        General characteristics
-->
|crew=2
|capacity=
|length m=
|length ft=32
|length in=0
|span m=
|span ft=36
|span in=0
|swept m=<!-- swing-wings -->
|swept ft=<!-- swing-wings -->
|swept in=<!-- swing-wings -->
|height m=
|height ft=16
|height in=4+1/2
|height note= (wheels down)
|wing area sqm=
|wing area sqft=302.8
|wing area note=
|aspect ratio=<!-- sailplanes -->
|airfoil=
|empty weight kg=
|empty weight lb=3460
|empty weight note=
|gross weight kg=
|gross weight lb=5109
|gross weight note=
|fuel capacity=
|more general=
<!--
        Powerplant
-->
|eng1 number=1
|eng1 name=Pratt & Whitney R-1340-12
|eng1 type=9-cylinder air-cooled radial engine
|eng1 kw=<!-- prop engines -->
|eng1 hp=550<!-- prop engines -->

|prop blade number=<!-- propeller aircraft -->
|prop name=
|prop dia m=<!-- propeller aircraft -->
|prop dia ft=<!-- propeller aircraft -->
|prop dia in=<!-- propeller aircraft -->
|prop note=
<!--
        Performance
-->
|perfhide=

|max speed kmh=
|max speed mph=162
|max speed kts=
|max speed mach=<!-- supersonic aircraft -->
|cruise speed kmh=<!-- if max speed unknown -->
|cruise speed mph=<!-- if max speed unknown -->
|cruise speed kts=
|range km=
|range miles=798
|range nmi=
|endurance=<!-- if range unknown -->
|ceiling m=
|ceiling ft=14300
|climb rate ms=
|climb rate ftmin=
|time to altitude=6 min to {{convert|5000|ft|m|-1|abbr=on}}
|more performance=
<!--
        Armament
-->
|guns= 1× forward firing and 1× flexibly mounted .30 in (7.62 mm) [[Engineering:M1919 Browning machine gun|Browning machine gun]]s
|bombs= 2× 100 lb (45 kg) bombs
}}

==See also==
{{aircontent
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|see also=
|related=<!-- related developments -->
|similar aircraft=<!-- similar or comparable aircraft -->
*[[Engineering:Curtiss SOC Seagull|Curtiss SOC Seagull]]
*[[Engineering:Fairey Seafox|Fairey Seafox]]
*[[Engineering:Fokker C.XI|Fokker C.XI]]
*[[Engineering:Heinkel He 114|Heinkel He 114]]
*[[Engineering:Nakajima E8N|Nakajima E8N]]
*[[Engineering:Potez 452|Potez 452]]
*[[Engineering:Vought O5U|Vought O5U]]
|lists=<!-- related lists -->
*[[Engineering:List of flying boats and floatplanes|List of flying boats and floatplanes]]
}}

==References==
;Notes
{{reflist}}
;Bibliography
{{refbegin}}
*Francillon, René J. ''McDonnell Douglas Aircraft since 1920''. London:Putnam, 1979. {{ISBN|0-370-00050-1}}.
{{refend}}

<!-- ==External links== -->
{{Douglas aircraft}}
{{USN observation aircraft}}

[[Category:Floatplanes]]
[[Category:Single-engined tractor aircraft]]
[[Category:Amphibious aircraft]]

{{Sourceattribution|Douglas O2D}}