Fiat A.55

A.55
Fiat A.55
Type	Piston engine
National origin	Italy
Manufacturer	Fiat
First run	1932

The Fiat A.55 was a seven-cylinder, air-cooled radial engine developed in Italy in the 1930s as a powerplant for aircraft. ^{[1] [2]}

Specifications

Data fromJane's All the World's Aircraft 1931. ^[3]

General characteristics

• Type: 7-cylinder air-cooled radial
• Bore: 140 mm (5.51 in)
• Stroke: 160 mm (6.30 in)
• Length: 1,139 mm (44.84 in)
• Diameter: 1,290 mm (50.79 in)
• Dry weight: 290 kg (639 lb) dry

Components

• Valvetrain: 4x overhead valves per cylinder operated by seven individual camshafts, driven through radial shafts and bevel gearboxes
• Supercharger: centrifugal single-stage
• Fuel system: oil heated carburetor
• Oil system: dry sump with two pumps
• Cooling system: Air-cooled

Performance

• Power output: 300 hp (224 kW) at 1,900 rpm - normal

320 hp (239 kW) at 2,000 rpm - maximum

• Compression ratio: 5.5:1

See also

Related lists

• List of aircraft engines

References

1. Jotti, da Badia Polesine (1934). Annuario dell'aeronautica Italiana 1934. Milan: Libreria Aeronautica.
2. Angle, G.D., 1940. Aerosphere: Including World's Aircraft Engines with Aircraft Directory. New York: Aircraft Publishers
3. Grey, C.G., ed. (1931). Jane's All the World's Aircraft 1931. London: Sampson Low, Marston & company, ltd. p. 59d.