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{{Infobox aircraft
 |name = DT
 |image = Douglas DT-2 taking off from USS Langley (CV-1) on 2 April 1925 (NH 93180).jpg
 |caption = Douglas DT-2 launched from [[USS Langley (CV-1)|USS ''Langley'']], San Diego, California
 |type = Torpedo bomber
 |manufacturer = [[Douglas Aircraft Company]]
 |designer = 
 |first_flight = November [[1921 in aviation|1921]]
 |introduction =
 |retired =
 |status =
 |primary_user = [[United States Navy]]
 |more_users = 
 |produced = 1921–1929
 |number_built = 90
 |unit cost = 
 |variants = [[Douglas World Cruiser]]
}}

The '''Douglas DT''' [[bomber]] was the [[Douglas Aircraft Company]]'s first military contract, forging a link between the company and the [[United States Navy]]. Navy Contract No. 53305 of April 1, 1921, required only 18 pages to set out the specifications that resulted in the purchase of three DT (D for Douglas, T for [[torpedo]]) folding-wing [[aircraft]].

The DT used a welded steel fuselage with aluminum covering the forward and center sections and fabric covering the rear section. Douglas built 46 DT-1 and DT-2 torpedo bombers for the U.S. Navy, Norwegian Navy, and [[Peruvian Navy]]. 20 DT-2 aircraft were built under license by the [[L-W-F Engineering Company Inc.]], six by the [[Naval Aircraft Factory]] (NAF), and 11 by the [[Dayton-Wright Company]]. Another seven were built for [[Norway]] under license by [[Marinens Flyvebaatfabrikk|Marinens Flyvebåtfabrik]]. Although still in service [[German invasion of Norway|when the Germans invaded Norway]], the Norwegian DTs did not see action in the [[Norwegian campaign|Norwegian Campaign]]. The DT could be fitted either with pontoons or wheeled [[landing gear]] and could carry a {{convert|1,800|lb|kg|abbr=on|0}} torpedo.

The first flight was in November [[1921 in aviation|1921]] and production continued until [[1929 in aviation|1929]]. The DT operated off the U.S. Navy's first aircraft carrier, {{USS|Langley|CV-1|6}}, from land bases, and from [[seaplane tender]]s. Several were flown by the [[United States Marine Corps|Marine Corps]].

Variations of the DT-2 aircraft were designated DT-4, DT-5, DT-6, and DTB. Machines licence-built by [[Dayton-Wright]] were internally designated '''SDW''' by that company. The type became the basis for the [[Douglas DWC|Douglas World Cruiser]].

==Variants==
;DT-1: Preproduction prototypes; three built.
[[File:EL-2002-00568.jpg|thumb|right|Douglas DT-2 at Langley]]
;DT-2: Two-seat torpedo-bomber biplane, powered by a {{convert|450|hp|kW|abbr=on}} Liberty V-12 piston engine; 64 built.
;DT-3: Proposed version of the DT-2. Not built.
;DT-4: Four DT-2s converted into bomber aircraft by the Naval Aircraft Factory. The aircraft were fitted with direct-drive Wright T-2 V-12 engines.
;DT-5: Redesignation of two DT-4s fitted with a geared {{convert|650|hp|kW|abbr=on}} Wright T-2B V-12 engine.
;DT-6: One DT-2 aircraft fitted with a {{convert|450|hp|kW|abbr=on}} Wright P-1 radial piston engine.
;DT-2B: This designation was given to one DT-2 aircraft supplied to the Norwegian government. Seven similar aircraft were built under licence in Norway.
;DTB: Export version for Peru. Four aircraft built for the Peruvian navy, fitted with {{convert|650|hp|kW|abbr=on}} Wright Typhoon V-12 piston engines.
;SDW-1: Redesignation of three DT-2s modified by the Dayton-Wright company.

==Operators==
[[File:Douglas DT dropping torpedo NAN6-75.jpg|thumb|A Douglas DT of the U.S. Navy dropping a torpedo.]]
; {{NOR}}
*[[Royal Norwegian Navy Air Service]]
; {{PER}}
*[[Peruvian Navy]]
; {{USA}}
*[[United States Marine Corps]]
*[[United States Navy]]

==Specifications (DT-2 floatplane)==
{{Aircraft specs
|ref=''McDonnell Douglas Aircraft since 1920 Vol.1.''<ref name="FrancMcd">{{cite book|last=Francillon|first=Rene J.|title=McDonnell Douglas Aircraft since 1920|publisher=Putnam & Company Ltd.|location=London|year=1988|edition=2nd revised|volume=1|pages=45–55|isbn=0-87021-428-4}}</ref><!-- reference -->
|prime units?=imp<!-- imp or kts first for US aircraft, and UK aircraft pre-metrification, 
met(ric) first for all others. You MUST choose a format, or no specifications will show -->
<!--
        General characteristics
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|genhide=

|crew=two
|length m=11.8
|span m=15.8
|height ft=15 
|height in=1
|wing area sqm=65.7
|empty weight lb=4528
|gross weight lb=7293
<!--
        Powerplant
-->
|eng1 number=1
|eng1 name=[[Liberty L-12]] 
|eng1 type=V-12 water-cooled piston engine
|eng1 hp=450<!-- prop engines -->

|prop blade number=2<!-- propeller aircraft -->
|prop name= wooden propeller
<!--
        Performance
-->
|max speed mph=100
|range km=441
|ceiling ft=7,400
|climb rate ftmin=345
|time to altitude=14.5 min to {{convert|5,000|ft|m|abbr=on|0}}
|wing loading lb/sqft=10.3
|power/mass=0.0617 hp/lb (0.1 kW/kg)
<!--
        Armament
-->
|guns=1× {{convert|0.30|in|mm|abbr=on|2}} [[M1919 Browning machine gun]] 
|bombs= 1× {{convert|1,835|lb|kg|abbr=on|0}} [[aerial torpedo]]
|rockets= 
|missiles= 
|hardpoints=
|hardpoint capacity=
|hardpoint rockets=
|hardpoint missiles=
|hardpoint bombs=
|hardpoint other=

|avionics=
}}

==See also==
{{aircontent|
|related=
*[[Douglas DWC|Douglas World Cruiser]]

<!-- |similar aircraft=
|lists=
|see also= -->
}}

==References==
{{reflist}}

==External links==
{{commonscat-inline|Douglas DT}}
* [https://web.archive.org/web/20230605114720/https://www.boeing.com/history/products/dt-bomber.page Historical Snapshot: DT Torpedo Bomber]

{{Douglas aircraft}}
{{Dayton-Wright aircraft}}
{{LWF aircraft}}
{{USN torpedo aircraft}}

[[Category:1920s United States bomber aircraft|Douglas DT]]
[[Category:Biplanes]]
[[Category:Douglas aircraft|DT]]
[[Category:Single-engined tractor aircraft]]
[[Category:Aircraft first flown in 1921]]