Walter Pollux
{{short description|1930s Czech piston aircraft engine}}
| {{Infobox aircraft begin
|name= Pollux |image = Letecké muzeum Kbely (86).jpg |caption = Walter Pollux IIR }} {{Infobox Aircraft Engine |type= Radial aero engine |national origin = Czechoslovakia |manufacturer= Walter Aircraft Engines |first run= 1936 |major applications= |number built = |program cost = |unit cost = |developed from = |developed into = |variants with their own articles = }} |
The Walter Pollux is a Czechoslovakian nine-cylinder, air-cooled, radial engine, built by Walter Aircraft Engines for powering light aircraft and that first ran in 1936. The engine produces {{cvt|320|hp|order=flip}} at 1,800 rpm.{{cite book |last1=Gunston |first1=Bill |title=World encyclopaedia of aero engines |date=1989 |publisher=P. Stephens |isbn=1-85260-163-9 |page=174 |edition=Fully rev. 2nd}}
The first known use was on the Fieseler F 2 Tiger in 1934.{{cite journal |journal=Flug Revue |date=November 2000 |title=unknown}}
Variants
Applications
Engines on display
A preserved example of the Walter Pollux engine is on display at the following museum:
Specifications (Pollux II)
{{pistonspecs
|
|ref=Flight,{{cite journal |title=ENGINES at the PARIS SHOW |journal=Flight |date=26 November 1936 |volume=XXX |issue=1457 |pages=578–579 |url=http://www.flightglobal.com/pdfarchive/view/1936/1936%20-%203254.html |accessdate=26 December 2018 |format=pdf}} Jane's all the World's Aircraft 1931{{cite book |title=Jane's all the World's Aircraft 1931 |editor1-last=Grey |editor1-first=C.G. |year=1931 |publisher=Sampson Low, Marston & company, ltd |location=London |pages=29d–30d }}
|type=9-cylinder radial piston engine
|bore={{cvt|135|mm}}
|stroke={{cvt|170|mm}}
|displacement=
|length={{cvt|1220|mm}}
|diameter={{cvt|1254|mm}}
|width=
|height=
|weight={{cvt|712|lb|order=flip}}; Pollux IIR {{cvt|751|lb|order=flip}}-geared
|valvetrain=One intake and one exhaust valve per cylinder
|supercharger=
|turbocharger=
|fuelsystem=One Zenith double 60DCJ carburettor
|fueltype=Benzine - Benzol 50:50
|oilsystem=dry sump pressure feed
|coolingsystem=Air-cooled
|power=Normal:{{cvt|320|hp|order=flip}} at 1,800 rpm; maximum {{cvt|380|hp|order=flip}} at 1,900 rpm
|specpower=
|compression=6:1
|fuelcon=
|specfuelcon={{cvt|0.464|lb/hp.h|order=flip}}
|oilcon={{cvt|0.022|or|0.035|lb/hp.h|order=flip}}
|power/weight= {{cvt|1|kW/kg|hp/lb}}
|designer=
|reduction_gear=Pollux IIR - 0.666:1
|general_other=
|components_other=
|performance_other=
}}
See also
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|related=
|similar aircraft=
|lists=
|similar engines=
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