View source for Euler D.I

{|{{Infobox Aircraft Begin
  |name = Euler D.I
  |image =
  |caption =
}}{{Infobox Aircraft Type
  |type = Fighter
  |manufacturer = Euler-Werke
  |designer = [[August Euler]]
  |first flight = Autumn 1916
  |introduced = 1917
  |retired = 1920
  |status =
  |primary user = [[Luftstreitkräfte]]
  |more users =
  |produced =
  |number built =around 75
  |unit cost =
  |variants with their own articles = [[Euler D.II]]
}}
|}

The '''Euler D.I''' was a German single-seat fighter based on the [[France|French]] [[Nieuport 11]].<ref name=":SY1">{{Cite book |last=Green |first=William |title=The Complete Book of Fighters |last2=Swanborough |first2=Gordon |date=1994 |publisher= |isbn=0861016432 |volume= |location=United Kingdom |pages=149 |language= |trans-title= |chapter=}}</ref><ref>{{Cite book |last=Gray |first=Peter |title=German Aircraft of the First World War |last2=Thetford |first2=Owen |date=1962 |publisher=Doubleday and Company |edition=2nd |location=United States |pages=329}}</ref> After seeing the success of the French Nieuport 11 at the front, German designer [[August Euler]] set about to create a German aircraft based on the Nieuport design. The Euler D.I first flew in late 1916. It was powered by an 80&nbsp;hp engine with the Euler patented machine gun on the front.<ref name=":SY1" />

==Operational history==
Two prototypes were recorded as being in service at the front in October 1916, and the German government ordered 50 in the same month. A further 50 were ordered in early 1917, but this order was largely transferred over to the D.I's successor, the [[Euler D.II]]. The plane saw very little combat service, being largely used as a fighter trainer for the remainder of the war.<ref name=":SY1" />

==Operators==
;{{flag|German Empire}}
*[[Luftstreitkräfte]];

==Specifications==
{{Aircraft specs
|ref=<ref name=":SY1" />
|prime units?=met
<!--
        General characteristics
-->
|crew=1
|length m=8.1
|length note=
|span m=13
|span note=
|height m=2.66
|height note=
|wing area sqm=13
|wing area note=
|aspect ratio=<!-- sailplanes -->
|airfoil=
|empty weight kg=380
|empty weight note=
|gross weight kg=600
|gross weight note=
|max takeoff weight kg=
|max takeoff weight note=
|fuel capacity=
|more general=
<!--
        Powerplant
-->
|eng1 number=1
|eng1 name=[[Oberursel U.0]]
|eng1 type=7-cylinder air-cooled radial piston engine
|eng1 hp=80
|eng1 note=

|prop blade number=2
|prop name=wooden fixed-pitch propeller
|prop dia m=<!-- propeller aircraft -->
|prop dia note=
<!--
        Performance
-->
|max speed kmh=140
|max speed note=
|cruise speed kmh=
|cruise speed note=
|stall speed kmh=
|stall speed note=
|never exceed speed kmh=
|never exceed speed note=
|range km=
|range note=
|combat range km=
|combat range note=
|ferry range km=
|ferry range note=
|endurance=<!-- if range unknown -->
|ceiling m=
|ceiling note=
|g limits=<!-- aerobatic -->
|roll rate=<!-- aerobatic -->
|climb rate ms=
|climb rate note=
|time to altitude={{cvt|2000|m}} in 12.5 minutes
|wing loading kg/m2=
|wing loading note=
|fuel consumption kg/km=
|power/mass=
|more performance=
<!--
        Armament
-->
|guns=1 x engine-mounted 7.92-mm machine gun}}

== References ==
<!-- Inline citations added to your article will automatically display here. See en.wikipedia.org/wiki/WP:REFB for instructions on how to add citations. -->
{{reflist}}

{{Nieuport V-strutters}}
{{World War I Aircraft of the Central Powers}}
{{Idflieg D-class designations}}

[[Category:1910s German fighter aircraft]]
[[Category:Sesquiplanes]]
[[Category:Rotary-engined aircraft]]
[[Category:Aircraft first flown in 1916]]