ENMASA Beta

ENMASA Beta
Type	Air-cooled radial
National origin	Spain
Manufacturer	Empresa Nacional de Motores de Aviación S.A. [ca]

The ENMASA Beta was a Spanish air-cooled radial engine of the 1950s. A copy of the American Wright R-1820 Cyclone, the Beta was the powerplant of a number of post Spanish Civil War aircraft, including the Spanish version of the Junkers Ju 52 transport, the CASA C-202 Halcón and the Hispano HA-100 trainer.

Specifications (Beta B-4)

Data from Bridgman, 1953

General characteristics

• Type: Nine-cylinder single-row air-cooled radial engine
• Bore: 155.5 mm (6.1 in)
• Stroke: 174.6 mm (6.8 in)
• Displacement: 29.85 L (1,820 in³)
• Length: 1,170 mm (46 in)
• Diameter: 1,365 mm (53.7 in)
• Dry weight: 468 kg (1,030 lb)

Components

• Valvetrain: One inlet valve and one sodium cooled exhaust valve per cylinder
• Supercharger: Centrifugal type
• Fuel system: One 4-barrel down-draught carburettor
• Fuel type: 87 octane minimum
• Cooling system: Air-cooled

Performance

• Power output: 578 kW (775 hp) at 2,200 rpm (take-off power)

See also

Related development

• Wright R-1820

Related lists

• List of aircraft engines

References

Bibliography

• Bridgman, Leonard (1953). Jane's All The World's Aircraft 1953–54. London: Jane's.