Walter Pollux

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 240 kW (320 hp) at 1,800 rpm.[1]

Pollux
Walter Pollux IIR
Type Radial aero engine
National origin Czechoslovakia
Manufacturer Walter Aircraft Engines
First run 1936

The first known use was on the Fieseler F 2 Tiger in 1934.[2]

Variants
Pollux II
Direct drive engine
Pollux II-R
Geared engine, reduction ratio 0.666:1

Applications

Engines on display

A preserved example of the Walter Pollux engine is on display at the following museum:

  • Prague Aviation Museum, Kbely

Specifications (Pollux II)

Data from Flight[3], Jane's all the World's Aircraft 1931[4]

General characteristics

  • Type: 9-cylinder radial piston engine
  • Bore: 135 mm (5.3 in)
  • Stroke: 170 mm (6.7 in)
  • Length: 1,220 mm (48 in)
  • Diameter: 1,254 mm (49.4 in)
  • Dry weight: 323 kg (712 lb); Pollux IIR 341 kg (751 lb)-geared

Components

  • Valvetrain: One intake and one exhaust valve per cylinder
  • Fuel system: One Zenith double 60DCJ carburettor
  • Fuel type: Benzine - Benzol 50:50
  • Oil system: dry sump pressure feed
  • Cooling system: Air-cooled
  • Reduction gear: Pollux IIR - 0.666:1

Performance

  • Power output: Normal:240 kW (320 hp) at 1,800 rpm; maximum 280 kW (380 hp) at 1,900 rpm
  • Compression ratio: 6:1
  • Specific fuel consumption: 0.282 kg/kWh (0.464 lb/(hp⋅h))
  • Oil consumption: 0.013 or 0.021 kg/kWh (0.022 or 0.035 lb/(hp⋅h))
  • Power-to-weight ratio: 1 kW/kg (0.61 hp/lb)
gollark: Not really.
gollark: @Tronzoid Sealand.
gollark: You're literally metaphorically asking for it.
gollark: I could probably make a version not limited to Milo for that.
gollark: A defrag shouldn't be too awfully hard. Just pull from all the chests and push to the first chest with available space.

See also

Comparable engines

Related lists

References
  1. Gunston, Bill (1989). World encyclopaedia of aero engines (Fully rev. 2nd ed.). P. Stephens. p. 174. ISBN 1-85260-163-9.
  2. "unknown". Flug Revue. November 2000.
  3. "ENGINES at the PARIS SHOW" (pdf). Flight. XXX (1457): 578–579. 26 November 1936. Retrieved 26 December 2018.
  4. Grey, C.G., ed. (1931). Jane's all the World's Aircraft 1931. London: Sampson Low, Marston & company, ltd. pp. 29d–30d.
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