Blackburn Cirrus Midget
{{short description|1930s British piston aircraft engine}}
{{Use dmy dates|date=February 2017}}
{{Use British English|date=February 2017}}
| {{Infobox aircraft begin
|name = Cirrus Midget |image = |caption = }}{{Infobox Aircraft Engine |type=Air-cooled 4-cylinder inline piston engine |manufacturer=Blackburn Aircraft |national origin=United Kingdom |first run=1937 |major applications=Chilton D.W.1 |number built = |program cost = |unit cost = |developed from = |developed into = |variants with their own articles = }} |
The Blackburn Cirrus Midget was a British four-cylinder, inverted, inline air-cooled aero engine designed and built in 1937 by the Cirrus Engine Section of Blackburn Aircraft Limited. Little is known of its development and use, its sole aircraft application being reported as the Chilton D.W.1 although it is possible that this did not transpire.Lumsden 2003, p.90.[http://www.flightglobal.com/pdfarchive/view/1938/1938%20-%202966.html Flightglobal archive - Intended Chilton D.W.1 application - Flight, October 1938] Retrieved: 2 September 2009.
Specifications (Cirrus Midget)
{{pistonspecs
|
|type=Air-cooled inverted inline four-cylinder piston engine
|ref=Lumsden Lumsden 2003, p. 90.Lumsden 2003, p. 282.The mixture of Imperial and metric units is either due to Blackburn convention or an error in transcription.
|bore=85 mm (3.35 in)
|stroke=100 mm (3.94 in)
|displacement=2.27 L (138.5 cu in)
|length=33.6 in (853 mm)
|diameter=
|width=14.18 in (360 mm)
|height=21.65 in (550 mm)
|weight=155 lb (70 kg)
|valvetrain=Overhead poppet valve, one inlet and one exhaust valve per cylinder
|supercharger=
|turbocharger=
|fuelsystem=Single downdraught carburettor
|oilsystem=
|coolingsystem=Air-cooled
|power=55 hp (41 kW) at 2,600 rpm (maximum power)
|specpower=0.35 hp/cu in (6.5 kW/L)
|compression=6:1
|fuelcon=
|specfuelcon=
|oilcon=
|power/weight= 0.35 hp/lb (0.58 kW/kg)
|designer=
|reduction_gear=Direct drive, left hand tractor
|general_other=
|components_other=
|performance_other=
}}
See also
{{aircontent
|see also=
|related=
|similar aircraft=
|lists=
|similar engines=
}}
References
=Notes=
{{reflist}}
=Bibliography=
{{refbegin}}
- 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/1938/1938%20-%202646.html Announcement of Blackburn Cirrus Midget introduction - Flight, September 1938]
- [http://www.flightglobal.com/pdfarchive/view/1938/1938%20-%203311.html Image of the Blackburn Cirrus Midget - Flight, November 1938]
{{Cirrus aeroengines}}
Category:Air-cooled aircraft piston engines
Category:Blackburn aircraft engines