The Alfa Romeo 115 was an Italian six-cylinder air-cooled inverted inline engine for aircraft use, mainly for training and light planes, based on the
de Havilland Gipsy Six
The de Havilland Gipsy Six is a British six-cylinder, air-cooled, inverted inline piston engine developed by the de Havilland Engine Company for aircraft use in the 1930s. It was based on the cylinders of the four-cylinder Gipsy Major and w ...
engine. Production totalled approximately 1,600 units. Derivatives of the 115 include the -1, bis, ter and Alfa Romeo 116.
Description
The Alfa Romeo 115 series of engines closely follows the original
de Havilland Gipsy Six
The de Havilland Gipsy Six is a British six-cylinder, air-cooled, inverted inline piston engine developed by the de Havilland Engine Company for aircraft use in the 1930s. It was based on the cylinders of the four-cylinder Gipsy Major and w ...
engines in having one-piece
Elektron casting crankcases with cover plates, steel cylinders, finned for cooling, and detachable
aluminium alloy
An aluminium alloy (or aluminum alloy; see spelling differences) is an alloy in which aluminium (Al) is the predominant metal. The typical alloying elements are copper, magnesium, manganese, silicon, tin, nickel and zinc. There are two principal ...
cylinder heads. The six-throw one-piece counterbalanced crankshaft is carried in seven plain journal bearings and the propeller is driven directly by the crankshaft.
Variants
;110ter:
:4-cylinder version of the 115ter
;115-1 (115-I):
;115bis (115-2 / 115-II):
;115ter (115-3 / 115-III):
;116-1 (116-I): The 115 bored out to developing at 2,360 rpm, otherwise similar.
Applications
*Ambrosini SAI.3
The Ambrosini SAI.3 was a two-seat Italian touring airplane first flown in 1937.
Design and development
The SAI.3 was a low-wing monoplane with a graceful, elliptical wing, and fixed tailwheel undercarriage. Customers could choose between en ...
* Bestetti BN.1 (one prototype)
* Breda Ba.75 (prototypes)
*Breda Ba.79S
The Breda Ba.79S was a single-engine four-seat high-wing private aircraft built in Italy in the late 1930s. Only a few were produced.
Design and development
The Breda 79S was unusual amongst the Società Italiana Ernesto Breda
Società Itali ...
* CANT Z.1012 (or 110)
*Caproni Ca.164
The Caproni Ca.164 was a training biplane produced in Italy shortly prior to World War II. It was a largely conventional biplane intended as a follow-on to the Ca.100 and sharing that aircraft's layout with a slightly smaller upper wing.
Develo ...
* Nardi FN.305
* Nardi FN.315
* Saiman 200
* Ambrosini SAI.2S (115-1)
* Caproni Ca.309 Ghibli (115bis)
* Fiat G.46-1B (115bis)Ambrosini S.7
The Ambrosini SAI.7 was an Italian racing aircraft flown before World War II that entered production as a military trainer (designated simply S.7) after the war. It was of conventional configuration, constructed of wood, with a tail-wheel underc ...
(115ter)
* Fiat G.46-A (115ter)
* Fiat G.46-3A (115ter)
* Fiat G.46-4A (115ter)
Specifications (115-1)
See also
Notes
References
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{{Alfa Romeo aeroengines
115
Air-cooled aircraft piston engines
1930s aircraft piston engines
Inverted aircraft piston engines
Straight-six engines