View source for Farman 12We

{{Short description|1920s French piston aircraft engine}}
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{|{{Infobox Aircraft Begin
|name=12We
|image=File:Farman 12We Flugwerft Schleissheim.jpg
|caption= Farman 12We on display at [[Deutsches Museum Flugwerft Schleissheim]]
}}{{Infobox Aircraft Engine
|type=[[Reciprocating engine|Piston]] [[Aircraft engine|aero engine]]
|manufacturer=[[Farman Aviation Works]]
|first run=October 1922 (First flight)
|major applications=[[Farman F.60 Goliath]]
}}
|}
The '''Farman 12We''' was a French [[W12 engine|12-cylinder broad arrow configuration]] [[aircraft engine]] that was designed and built by [[Farman Aviation Works|Farman]] in the early 1920s. Power output was 370&nbsp; kilowatts (500&nbsp;hp).
==Design and development==
The Farman company developed and produced aero engines from 1915; the 12We was the company's most produced engine. Following the [[Cylinder (engine)|cylinder]] layout of the [[Napier Lion]] this engine featured three [[Cylinder block|banks]] of four cylinders and employed water cooling.<ref name="Gunston">Gunston 1989, p. 56.</ref>
The 12We was first flown in a [[Farman F.60 Goliath]] in October 1922 and later set a distance record powering a [[Farman F.60 Goliath#Variants|Farman F.62]] in 1924, the engine ran continuously for 38 hours.<ref>Gunston 1989, p. 57.</ref>
==Variants==
;12Wers: with 0.5:1 reduction gear and KP24 supercharger.
==Applications==
[[File:FarmanGoliathCSA.jpg|thumb|[[Farman F.60 Goliath]] in 1929]]
{{columns-list|colwidth=30em|
*[[Breguet 19]]
*[[Dewoitine D.14]]
*[[Dornier Do J]]
*[[Farman A.2]]
*[[Farman F.60 Goliath]]
*[[Farman F.62]]
*[[Farman F.140 Super Goliath]]
*[[Farman F.160]]
*[[Farman F.170 Jabiru]]
*[[Farman F.180]]
*[[Farman F.1000]]
*[[Latécoère 21]]
*[[Latécoère 23]]
*[[Latécoère 24]]
*[[Latécoère 32]]
*[[Latham 47]]
*[[Lublin R-VIII]]
*[[Potez 25]]
*[[Potez 28]]
}}
==Engines on display==
Preserved Farman 12We engines are on static display at the following museums:
*[[Deutsches Museum Flugwerft Schleissheim]]<ref>[http://www.deutsches-museum.de/en/flugwerft/collections/piston-engines/ www.deutsches-museum.de - Piston engine collection] {{Webarchive|url=https://web.archive.org/web/20140419012903/http://www.deutsches-museum.de/en/flugwerft/collections/piston-engines/ |date=2014-04-19 }} Retrieved: 5 August 2014</ref>
*[[Polish Aviation Museum]]<ref>[http://www.muzeumlotnictwa.pl/zbiory_sz.php?ido=160&w=a www.muzeumlotnictwa.pl - Farman 12WE exhibit] Retrieved: 5 August 2014</ref>
==Specifications)==
[[File:Farman 12 WE.jpg|thumb|Right side view of the 12 We engine on display at the Deutsches Museum Flugwerft Schleissheim]]
{{pistonspecs
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|type=12-cylinder water-cooled [[W engine|W-block]] (3 banks of 4 cylinders) aircraft piston engine
|ref=''Gunston''.<ref name="Gunston"/>
|bore=130 mm (5.1 in)
|stroke=160 mm (6.3 in)
|displacement=25.48 L (1,555 cu in)
|length=
|diameter=
|width=
|height=
|weight=470 kg (1,036 lb)
|valvetrain=Overhead valve
|supercharger=
|turbocharger=
|fuelsystem=
|fueltype=
|oilsystem=
|coolingsystem=Water-cooled
|power=373 kW (500 hp) at 2,150 rpm
|specpower=
|compression=
|fuelcon=
|specfuelcon=
|oilcon=
|power/weight=
}}
==See also==
{{aircontent
<!-- other related articles that have not already linked: -->
|see also=
<!-- designs which were developed into or from this aircraft: -->
|related=
<!-- aircraft that are of similar role, era, and capability as this design: -->
|similar aircraft=
<!-- relevant lists that this aircraft appears in: -->
|lists=
*[[List of aircraft engines]]
<!-- For aircraft engine articles.  Engines that are of similar to this design: -->
|similar engines=
*[[Lorraine 12E Courlis]]
*[[Napier Lion]]
<!-- See [[WP:Air/PC]] for more explanation of these fields. -->
}}
== References ==
===Notes===
{{reflist}}
===Bibliography===
{{refbegin}}
* Gunston, Bill. ''World Encyclopaedia of Aero Engines''. Cambridge, England. Patrick Stephens Limited, 1989. {{ISBN|1-85260-163-9}}
{{refend}}
==External links==
{{Commons category|Farman 12We}}
*[http://www.flightglobal.com/pdfarchive/view/1925/1925%20-%200841.html ''Flight'' - December 1925 article on the Farman Goliath and 12 We engine]
{{Farman Aviation Works aeroengines}}
[[Category:1920s aircraft piston engines]]
[[Category:W engines]]