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 from Jane'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

References

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

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[Jotti34-1] 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

[JAWA1931-3] Grey, C.G., ed. (1931). Jane's All the World's Aircraft 1931. London: Sampson Low, Marston & company, ltd. p. 59d.

[1]

[2]

[3]

v t e Fiat aircraft engines
Piston engines	A.10 A.12 A.14 A.15 A.18 A.20 A.22 A.24 A.25 A.30 A.50 A.53 A.54 A.55 A.58 A.59 A.60 A.70 A.74 A.76 A.78 A.80 A.82 AN.1 AS.2 AS.3 AS.5 AS.6 AS.8 SA8/75 S.55
Turbine engines	4002 4004 4301 4700

Specifications

General characteristics

Components

Performance

See also

References