The Walter NZ 40 was an unsuccessful, three-cylinder, air-cooled, radial engine for aircraft use built in Czechoslovakia by
Walter Aircraft Engines
Walter Aircraft Engines is an aircraft engine manufacturer and former automotive manufacturer. Its notable products include the M601 turboprop. The company is based in Prague, Czech Republic. It has been a subsidiary of GE Aerospace since Jul ...
in the late-1920s.
Design and development
Using common cylinders and parts from the earlier
Walter NZ 60
The Walter NZ 60 was a five-cylinder, air-cooled, radial engine for aircraft use built in Czechoslovakia by Walter Aircraft Engines
Walter Aircraft Engines is an aircraft engine manufacturer and former automotive manufacturer. Its notable p ...
(Novák-Zeithammer) engine the NZ 40 was the last in this series of engines.
[Gunston 1989, p. 174.] Problems with
imbalance
A balance disorder is a disturbance that causes an individual to feel unsteady, for example when standing or walking. It may be accompanied by feelings of giddiness, or wooziness, or having a sensation of movement, spinning, or floating. Balance ...
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
The Walter Polaris was a Czechoslovak three-cylinder, air-cooled radial engine for powering light aircraft that was developed in the 1930s.Gunston 1989, p. 174.
Applications
*Letov Š-39
* Rearwin Junior
Engines on display
A preserved example ...
.
[Němeček 1983]
Specifications (NZ 40)
See also
References
* Gunston, Bill. ''World Encyclopaedia of Aero Engines''. Cambridge, England. Patrick Stephens Limited, 1989.
* Němeček, Václav. ''Československá letadla I (1918-1945) (Czechoslovak Aircraft I (1918-1945))''. Third edition, Naše vojsko, Prague. 1983.
{{Walter aeroengines
NZ 40
1920s aircraft piston engines
Aircraft air-cooled radial piston engines