The BMW X is a small five-cylinder
radial engine
The radial engine is a reciprocating type internal combustion engine configuration in which the cylinders "radiate" outward from a central crankcase like the spokes of a wheel. It resembles a stylized star when viewed from the front, and is ca ...
for sport and training aircraft. Although this engine proved successful at several large-scale events in 1930, including that year's round-Europe flight, only a few were built.
The successor model to the BMW X five-cylinder radial engine, the BMW Xa, was introduced in 1931, with the
swept volume
Engine displacement is the measure of the cylinder volume swept by all of the pistons of a piston engine, excluding the combustion chambers. It is commonly used as an expression of an engine's size, and by extension as a loose indicator of the ...
increased from to . Power output went up from . The Xa was also not built in any quantity and was mainly installed in training and sport aircraft.
Variants
;X:Bore:, Stroke:
;Xa:Bore:, Stroke:
[
]
Applications
* BFW M.23
The BFW M.23, sometimes known as the Messerschmitt M 23, was a 1920s two-seat sporting aircraft designed by Willy Messerschmitt, and produced by ''Bayerische Flugzeugwerke'' (BFW). Examples won several prestigious races in 1929 and 1930.
Develo ...
* BFW M.31
* Gerner G.IIR
* Klemm L25
Specifications (BMW Xa)
See also
References
Further reading
*
External links
BMW X on the test rigKlemm L 25 sports aircraft with BMW X or BMW Xa engineBMW XKlemm L 25 sports aircraft with BMW X or BMW Xa aeroengineKlemm L 25 sports aircraft with BMW X or BMW Xa aeroengineKlemm L 25 sports aircraft with BMW X or BMW Xa engineKlemm L 25 sports aircraft with BMW X or BMW Xa engineKlemm L 25 sports aircraft with BMW X or BMW Xa engineBMW X
{{BMW aeroengines
X
1920s aircraft piston engines