BMW X
BMW X at the Deutsches Museum Flugwerft Schleissheim
Type Radial engine
Manufacturer BMW
First run 1927

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 2.2 L (130 cu in) to 2.9 L (180 cu in). Power output went up from 37 to 51 kW (50 to 68 hp). The Xa was also not built in any quantity and was mainly installed in training and sport aircraft.[1]

Variants

X
Bore:83 mm (3.3 in), Stroke:80 mm (3.1 in)[2]
Xa
Bore:90 mm (3.5 in), Stroke:92.5 mm (3.64 in)[2]

Applications

Specifications (BMW Xa)

Data from Flugzeug-Typenbuch. Handbuch der deutschen Luftfahrt- und Zubehör-Industrie 1944,[3] and Jane's all the World's Aircraft 1931 [2]

General characteristics

Components

Performance

  • 68 PS (67 hp; 50 kW) at 2,300 rpm (15 minutes) at sea level
  • 60 PS (59 hp; 44 kW) at 1,590 rpm (30 minutes) at sea level
  • 54 PS (53 hp; 40 kW) at 1,980 rpm (max continuous) at sea level
  • 40 PS (39 hp; 29 kW) at 1,980 rpm (max continuous) at 3,500 m (11,483 ft)

See also

Comparable engines

Related lists

References

  1. ^ Gunston, Bill (1989). World encyclopaedia of aero engines (Fully rev. 2nd ed.). P. Stephens. p. 25. ISBN 1-85260-163-9.
  2. ^ a b c Grey, C.G., ed. (1931). Jane's all the World's Aircraft 1931. London: Sampson Low, Marston & company, ltd. p. 50d.
  3. ^ Schneider, Helmut (Dipl.Ing.) (1944). Flugzeug-Typenbuch. Handbuch der deutschen Luftfahrt- und Zubehör-Industrie 1944 (in German) (Facsimile reprint 1986 ed.). Leipzig: Herm. Beyer Verlag. p. 364. ISBN 381120484X.

Further reading

External links

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