Douglas XT3D
| {{Infobox aircraft begin
| name=Douglas XT3D | image=Douglas XT3D-1 in Sept 1931.jpeg | caption=Douglas XT3D-1 }}{{Infobox aircraft type | type=Three-seat torpedo bomber | national origin=United States | manufacturer=Douglas Aircraft Company | designer= | first flight=1931 | introduced= | retired=1941 | status= | primary user=United States Navy | number built=1 | developed from= | variants with their own articles= }} |
The Douglas XT3D was an American three-seat torpedo bomber biplane developed by the Douglas Aircraft Company to meet a United States Navy requirement.
Development
File:Douglas XT3D-1 with folded wing 1931.jpeg
The XT3D torpedo bomber (BuNo 8730) first flew in 1931. It has been described as a "large and ugly" aircraft. Of metal construction with a fabric covering the XT3D had folding wings and an arrestor hook for carrier operation. With a fixed tailwheel landing gear and powered by a Pratt & Whitney R-1690 Hornet radial engine, the XT3D had three open cockpits, forward for the gunner/bomb-aimer, center for the pilot, rear for another gunner.
The XT3D failed to meet the United States Navy's requirements and after tests was returned to Douglas. It was modified with a more powerful Pratt & Whitney XR-1830-54 radial, and wheel fairings and the two rear cockpits were enclosed. Re-designated XT3D-2, it still failed to pass U.S. Navy trials and was not ordered into production. The U.S. Navy used the prototype for the next ten years as a general-purpose aircraft until relegating it to use as an instructional airframe in 1941.
Variants
File:Douglas XT3D-2 in January 1933.jpeg
;XT3D-1
:Prototype powered by a Pratt & Whitney R-1690 radial, one built.
;XT3D-2
:Prototype modified including a change to a Pratt & Whitney R-1830 radial.
Operators
;{{USA}}
Specifications
{{Aircraft specs
|prime units?=imp
|genhide=
|crew=3 (pilot, bomb-aimer/gunner, gunner)
|capacity=
|length m=
|length ft=35
|length in=5
|length note=
|span m=
|span ft=50
|span in=0
|span note=
|upper span m=
|upper span ft=
|upper span in=
|upper span note=
|mid span m=
|mid span ft=
|mid span in=
|mid span note=
|lower span m=
|lower span ft=
|lower span in=
|lower span note=
|swept m=
|swept ft=
|swept in=
|swept note=
|dia m=
|dia ft=
|dia in=
|dia note=
|width m=
|width ft=
|width in=
|width note=
|height m=
|height ft=13
|height in=2.5
|height note=
|wing area sqm=
|wing area sqft=624
|wing area note=
|swept area sqm=
|swept area sqft=
|swept area note=
|volume m3=
|volume ft3=
|volume note=
|aspect ratio=
|airfoil=
|empty weight kg=
|empty weight lb=4238
|empty weight note=
|gross weight kg=
|gross weight lb=
|gross weight note=
|max takeoff weight kg=
|max takeoff weight lb=7857
|max takeoff weight note=
|lift kg=
|lift lb=
|lift note=
|more general=
|eng1 number=1
|eng1 name=Pratt & Whitney R-1690 Hornet
|eng1 type=radial piston engine
|eng1 kw=
|eng1 hp=575
|eng1 kn=
|eng1 lbf=
|eng1 note=
|power original=
|thrust original=
|eng1 kn-ab=
|eng1 lbf-ab=
|prop blade number=
|prop name=
|prop dia m=
|prop dia ft=
|prop dia in=
|prop note=
|perfhide=
|max speed kmh=
|max speed mph=128
|max speed kts=
|max speed note=at 6000ft (1830m)
|max speed mach=
|cruise speed kmh=
|cruise speed mph=
|cruise speed kts=
|cruise speed note=
|stall speed kmh=
|stall speed mph=
|stall speed kts=
|stall speed note=
|never exceed speed kmh=
|never exceed speed mph=
|never exceed speed kts=
|never exceed speed note=
|minimum control speed kmh=
|minimum control speed mph=
|minimum control speed kts=
|minimum control speed note=
|range km=
|range miles=555
|range nmi=
|range note=
|combat range km=
|combat range miles=
|combat range nmi=
|combat range note=
|ferry range km=
|ferry range miles=
|ferry range nmi=
|ferry range note=
|endurance=
|ceiling m=
|ceiling ft=14000
|ceiling note=
|g limits=
|roll rate=
|glide ratio=
|climb rate ms=
|climb rate ftmin=
|climb rate note=
|sink rate ms=
|sink rate ftmin=
|sink rate note=
|lift to drag=
|wing loading kg/m2=
|wing loading lb/sqft=
|wing loading note=
|disk loading kg/m2=
|disk loading lb/sqft=
|disk loading note=
|power/mass met=
|power/mass imp=
|power/mass note=
|thrust/weight=
|thrust/weight note=
|more performance=
|guns= 2 × 0.3in (7.62mm) machine-gun (flexible mounted on forward and rear cockpits)
|bombs= 1835lb (832kg) torpedo or equivalent in bombs
|rockets=
|missiles=
|hardpoints=
|hardpoint capacity=
|hardpoint rockets=
|hardpoint missiles=
|hardpoint bombs=
|hardpoint other=
}}
See also
{{aircontent
|see also=
|related=
|similar aircraft=
|sequence=
|lists=
}}
References
{{commons category|Douglas T3D}}
;Notes
{{reflist|refs=
}}
;Bibliography
{{refbegin}}
- {{cite book |last= Andrade |first= John |title= U.S.Military Aircraft Designations and Serials since 1909|year=1979 |publisher=Midland Counties Publications|isbn= 0-904597-22-9}}
- {{cite book |title= The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985)|publisher= Orbis Publishing}}
{{refend}}
{{Douglas aircraft}}
{{USN torpedo aircraft}}
Category:1930s United States bomber aircraft
Category:Single-engined tractor aircraft