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Walter Mars I

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Walter Mars I

The Walter Mars I was a nine-cylinder, air-cooled, radial engine for aircraft use built in Czechoslovakia in the late 1920s.

Contents

Design and development

The Mars I was the largest capacity design of a series of three similar radial engines developed by the Walter company. Common cylinders were used for the five-cylinder Walter Vega and the seven-cylinder Walter Venus, the Mars I being a nine-cylinder engine.

Applications

  • ANBO III
  • Breda Ba.15
  • DAR 4
  • DAR 6
  • Fizir FN
  • Focke-Wulf A 33
  • Letov Š-32
  • SET 10

    • Specifications

    Data from Flight, July 1929.

    General characteristics

  • Type: 9-cylinder radial engine
  • Bore: 105 mm (5.90 in)
  • Stroke: 120 mm (4.72 in)
  • Displacement: 9.352 L (570.7 cu in)
  • Dry weight: 159 kg (350 lb)

    • Components

  • Fuel system: Zenith Type 42 carburettor; two plugs/cylinder and twin Scintilla magnetos
  • Cooling system: Air-cooled
  • Reduction gear: Direct drive

    • Performance

  • Power output: 112 kW (150 hp)
  • Compression ratio: 5.15:1
  • Power-to-weight ratio: 0.72 kW/kg (0.43 hp/lb)

    • References

    Walter Mars I Wikipedia
    (Text) CC BY-SA