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.

Mars I
Walter Mars I powered DAR 4 trimotor c.1930
Type 9-cylinder radial engine
National origin Czechoslovakia
Manufacturer Walter Engines
First run c.1929

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.[1]



Data from Flight, July 1929.[1]

General characteristics


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


See also

Related lists


  1. "Czechoslovakia". Flight. XXI: 762. 25 July 1929.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.