Walter Scolar

1930s Czech piston aircraft engine
Scolar
Walter Scolar
Type Radial aero engine
National origin Czechoslovakia
Manufacturer Walter Aircraft Engines
First run 1936

The Walter Scolar was a Czechoslovakian nine-cylinder, air-cooled radial engine for powering light aircraft that first ran in 1936. With a displacement of 8 litres (490 cu in), it produced 132 kW (180 hp) at 2,500 rpm.[1]

Applications

Engines on display

Preserved examples of the Walter Skolar engine are on display at the following museums:

Specifications (Scolar)

Data from Kosice Air Museum[2]

General characteristics

  • Type: 9-cylinder radial piston engine
  • Bore: 105 mm (4.13 in)
  • Stroke: 100 mm (3.94 in)
  • Displacement: 7.8 L (488 cu in)
  • Dry weight: 155 kg (342 lb)

Components

  • Valvetrain: One intake and one exhaust valve per cylinder
  • Fuel system: Carburettor
  • Fuel type: Petrol
  • Cooling system: Air-cooled

Performance

  • Power output: 132 kW (180 hp) at 2,500 rpm
  • Compression ratio: 5.4:1
  • Power-to-weight ratio: 0.85 kW/kg (0.52 hp/lb)

See also

Comparable engines

  • Alvis Leonides
  • Siemens-Halske Sh 12
  • Wolseley Aries

Related lists

References

Wikimedia Commons has media related to Walter Scolar.

Notes

  1. ^ Gunston 1989, p. 174.
  2. ^ Kosice Air Museum - Walter Scolar Retrieved: 18 October 2010

Bibliography

  • Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
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