Blackburn Cirrus Midget

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.[1][2]

Cirrus Midget
Type Air-cooled 4-cylinder inline piston engine
National origin United Kingdom
Manufacturer Blackburn Aircraft
First run 1937
Major applications Chilton D.W.1

Specifications (Cirrus Midget)

Data from Lumsden [3][4][5]

General characteristics

  • Type: Air-cooled inverted inline four-cylinder piston engine
  • 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)
  • Width: 14.18 in (360 mm)
  • Height: 21.65 in (550 mm)
  • Dry weight: 155 lb (70 kg)

Components

  • Valvetrain: Overhead poppet valve, one inlet and one exhaust valve per cylinder
  • Fuel system: Single downdraught carburettor
  • Fuel type: 87 octane petrol
  • Cooling system: Air-cooled
  • Reduction gear: Direct drive, left hand tractor

Performance

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See also

Comparable engines

Related lists

References

Notes
  1. Lumsden 2003, p.90.
  2. Flightglobal archive - Intended Chilton D.W.1 application - Flight, October 1938 Retrieved: 2 September 2009.
  3. Lumsden 2003, p. 90.
  4. Lumsden 2003, p. 282.
  5. The mixture of Imperial and metric units is either due to Blackburn convention or an error in transcription.

Bibliography
  • Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.
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