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The Walter NZ 40 was an unsuccessful, three-cylinder, air-cooled, radial engine for aircraft use built in Czechoslovakia by Walter Aircraft Engines in the late-1920s.

NZ 40
Walter NZ 45
Type Radial aero engine
National origin Czechoslovakia
Manufacturer Walter Aircraft Engines
First run 1929
Developed from Walter NZ 60

Design and development


Using common cylinders and parts from the earlier Walter NZ 60 (Novák-Zeithammer) engine the NZ 40 was the last in this series of engines.[1] Problems with imbalance causing vibrations lead to the type being redesigned as the NZ 45. This version underwent a type test in early 1932 but the problems were not fully resolved and the engine did not find any aircraft application. Very few of these engines were produced before being replaced in the range by the Walter Polaris.[2]


Specifications (NZ 40)


Data from Němeček.[2]

General characteristics

Components

Performance


See also


Comparable engines

Related lists


References


  1. Gunston 1989, p. 174.
  2. Němeček 1983



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