View source for Engineering:Junkers EF 61

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{|{{Infobox aircraft begin
  |name = EF 61
  |image = Junker_EF_61_sketch.jpg
  |caption = 
}}{{Infobox aircraft type
  |type = Bomber
  |manufacturer = Junkers
  |designer = 
  |first flight = 4 March 1937
  |introduction = 
  |retired =
  |status = [[Engineering:Prototype|Prototype]]
  |primary user = ''Luftwaffe''
  |more users = 
  |produced = 
  |number built = 2
  |unit cost = 
  |developed from = [[Engineering:Junkers Ju 49|Junkers Ju 49]]
  |variants with their own articles = 
}}
|}
The '''Junkers EF 61''' was a German [[Engineering:Prototype|prototype]] twin-engined high-altitude bomber aircraft of the 1930s.  Only two examples were built, but it provided valuable information on pressure cabins which aided the design of later pressurised aircraft.

==Design and development==
The pressurised cabin of the  Junkers EF 61 was based on that of the [[Engineering:Junkers Ju 49|Junkers Ju 49]]. The EF 61 was one of the few {{wipe|Germany}} high-altitude bomber and reconnaissance projects before [[Social:World War II|World War II]]. The project started in September 1935 and the maiden flight took place on 4 March 1937, but on 19 September of that year the EF 61 V1 was destroyed in a crash.<ref name="Green">Green, William, "The Warplanes of the Third Reich", Galahad Books, New York, 1986, Library of Congress card number 86-80568, {{ISBN|0-88365-666-3}}, page 447.</ref> The second prototype EF 61 V2 was ready in late 1937 but also crashed in December 1937, even before high-altitude testing had started. After that the project was abandoned.<ref name="Green"/>
The project eventually led to the high-altitude reconnaissance aircraft of the [[Engineering:Junkers Ju 86|Junkers Ju 86]] type in World War II.

==Specifications==
{{Aircraft specs
|ref=<ref name="ef61_1">{{cite web|url=http://www.flugzeug-lorenz.de/index.php?id=113|title=Junkers EF-61|publisher=www.flugzeug-lorenz.de|access-date=7 May 2012|language=de}}</ref><ref name="ef61_2">{{cite web|url=http://www.warbirdsresourcegroup.org/LRG/ef61.html|title=Junkers EF 61|publisher=www.warbirdsresourcegroup.org|access-date=7 May 2012}}</ref>
|prime units?=met
<!--
        General characteristics
-->
|crew=2
|length m=14.34
|span m=27
|wing area sqm=65
<!--
        Powerplant
-->
|eng1 number=2
|eng1 name=Daimler-Benz DB 600A 
|eng1 type=V-12 inverted liquid-cooled direct fuel injection piston engines
|eng1 kw=670
<!--
        Performance
-->
|max speed kmh=350
|max speed note=at {{convert|12,400|m|ft|abbr=on|0}}
|range km=6,000
|range note=planned
|ceiling m=15,000
|ceiling note=minimum
<!--
        Armament
-->

|guns=provision for a single MG15 machine gun
|bombs= internal bomb bay for 4 x 250 kg (551 lb) bombs
}}

==References==
{{reflist}}

==Book==
*  [https://www.amazon.com/gp/product/0890097585 ''Hitler's Luftwaffe: A Pictorial History and Technical Encyclopedia of Hitler's Air Power in World War II (Hardcover)'']

==External links==
* [http://www.warbirdsresourcegroup.org/LRG/ef61.html Warbirds Resource Group data on the EF 61]
* [http://www.1000aircraftphotos.com/Contributions/Braas/4828.htm Aircraft Photo]


{{DEFAULTSORT:Junkers Ef 61}}
[[Category:Twin piston-engined tractor aircraft]]

{{Sourceattribution|Junkers EF 61}}