Editing Bristol Phoenix

{{short description|1920s British piston aircraft engine}}
<!-- This article is a part of [[Wikipedia:WikiProject Aircraft]]. Please see [[Wikipedia:WikiProject Aircraft/page content]] for recommended layout. -->
{{Use dmy dates|date=December 2016}}
{{Use British English|date=December 2016}}
{|{{Infobox Aircraft Begin
 |name=Phoenix
 |image=BristolPhoenix.JPG
 |caption=
}}{{Infobox Aircraft Engine
 |type=[[Diesel engine|Diesel]] [[aircraft engine]]
 |manufacturer=[[Bristol Aeroplane Company]]
 |first run=1928
 |major applications=[[Westland Wapiti]]
}}
|}

The '''Phoenix''' was an experimental version of the [[Bristol Aeroplane Company]]'s [[Bristol Pegasus|Pegasus]] engine, adapted to run on the [[Diesel cycle]]. Only a few were built between 1928 and 1932, although samples fitted to a [[Westland Wapiti]] held the altitude record for diesel-powered aircraft at 27,453&nbsp;ft (8,368 m) from 11 May 1934 until [[World War II]].<ref>Gunston 1989, p.32.</ref> The primary advantage of the Phoenix was better [[fuel efficiency]] at cruise, by up to 35%.

==Variants==
* '''Phoenix I''': Diesel version of the Pegasus IF, 380&nbsp;hp.
* '''Phoenix IIM''': Medium-supercharged diesel version of Pegasus IM, 470&nbsp;hp.

==Applications==
*[[Westland Wapiti]]

==Specifications (Phoenix I)==
{{pistonspecs
|<!-- If you do not understand how to use this template, please ask at [[Wikipedia talk:WikiProject Aircraft]] -->
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|ref=''Lumsden''<ref>Lumsden 2003, p.114.</ref>
|type=nine-cylinder air-cooled Diesel [[radial engine]]
|bore=5.75 in (146 mm)
|stroke=7.5 in (190 mm)
|displacement=1,753 in<sup>3</sup> (28.7 L) 
|length=43.75 in (1,111 mm)
|diameter=55.25 in (1,403 mm)
|width=
|height=
|weight=1,067 lb (484 kg)
|valvetrain=[[Overhead valve]], two intake and two exhaust valves per cylinder, [[pushrod]]-actuated.
|supercharger=
|turbocharger=
|fuelsystem=
|fueltype=[[Diesel fuel|Diesel]]
|oilsystem=
|coolingsystem=Air-cooled
|power=380 hp (283 kW) at 2,000 rpm at sea level
|specpower=0.22 hp/in<sup>3</sup> (9.9 kW/L)
|compression=14:1
|fuelcon=
|specfuelcon=
|oilcon=
|power/weight=0.36 hp/lb (0.6 kW/kg)
}}

==See also==
{{aircontent
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|see also=

<!-- designs which were developed into or from this aircraft: -->
|related=

<!-- aircraft that are of similar role, era, and capability 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=
*[[BMW 114#Variants|BMW 114]]-V4
*[[Packard DR-980]]

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}}

==References==

===Notes===
{{reflist}}

===Bibliography===
{{refbegin}}
*Gunston, Bill. ''World Encyclopedia of Aero Engines''. Cambridge, England. Patrick Stephens Limited, 1989. {{ISBN|1-85260-163-9}}
*Lumsden, Alec. ''British Piston Engines and their Aircraft''. Marlborough, Wiltshire: Airlife Publishing, 2003. {{ISBN|1-85310-294-6}}.
{{refend}}

==External links==
*[http://www.flightglobal.com/pdfarchive/view/1934/1934%20-%200487.html Bristol Phoenix and Westland Wapiti - ''Flight'', May 1934]

{{BristolAeroengines}}

[[Category:Aircraft air-cooled radial piston engines]]
[[Category:Aircraft radial diesel engines]]
[[Category:Bristol aircraft engines|Phoenix]]
[[Category:1920s aircraft piston engines]]