BMW X (engine) explained

The BMW X is a small five-cylinder radial engine 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 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.^[1]

Variants

X:Bore:, Stroke:^[2]

Xa:Bore:, Stroke:^[2]

Applications

• BFW M.23
• BFW M.31
• Gerner G.IIR
• Klemm L25

Further reading

• Book: Jakobs . Fred . Kröschel . Robert. Pierer . Christian. BMW aero engines milestones in aviation from the beginnings to the present . Heel . 978-3-86852-214-3 . 2009.

External links

• BMW X on the test rig
• Klemm L 25 sports aircraft with BMW X or BMW Xa engine
• BMW X
• Klemm L 25 sports aircraft with BMW X or BMW Xa aeroengine
• Klemm L 25 sports aircraft with BMW X or BMW Xa aeroengine
• Klemm L 25 sports aircraft with BMW X or BMW Xa engine
• Klemm L 25 sports aircraft with BMW X or BMW Xa engine
• Klemm L 25 sports aircraft with BMW X or BMW Xa engine
• BMW X

Notes and References

1. Book: Gunston . Bill . World encyclopaedia of aero engines . 1989 . P. Stephens . 1-85260-163-9 . Fully rev. 2nd . 25.
2. Book: Jane's all the World's Aircraft 1931 . Grey . C.G. . 1931 . Sampson Low, Marston & company, ltd . London . 50d.