The Walter Gemma was a Czechoslovakian nine-cylinder, air-cooled, radial aero engine that was developed and manufactured in the early 1930s by Walter Aircraft Engines.

Gemma
Walter Gemma on display at the Finnish Aviation Museum
Type	Radial aero engine
National origin	Czechoslovakia
Manufacturer	Walter Aircraft Engines
First run	c.1934

Applications

• Nuri Demirağ Nu D.36
• Praga E-39

Engines on display

A preserved example of the Walter Gemma engine is on display at the following museum:

• Finnish Aviation Museum

Specifications

Data from Flight.[1][2]

General characteristics

• Type: 9-cylinder radial piston engine
• Bore: 105 mm (4.1 in)
• Stroke: 120 mm (4.7 in)
• Displacement: 9.35 l (571 cu in)

Components

• Valvetrain: One intake and one exhaust valve per cylinder
• Fuel system: Zenith carburettor
• Fuel type: Petrol
• Cooling system: Air-cooled

Performance

• Power output: 123 kW (165 hp)

See also

Comparable engines

• Wolseley Aries

Related lists

• List of aircraft engines

References

Wikimedia Commons has media related to Walter Gemma.

Notes

Bibliography

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