Between 1920 and 1951 the Société des Moteurs Salmson in France developed and built a series of widely used air-cooled aircraft engines.Gunston 1986, p. 158.
Design and development After their successful water-cooled radial engines, developed from 1908 to 1918, Salmson changed their focus to air-cooling to reduce weight and increase specific power (power per unit weight). The majority of the engines produced by Salmson were of radial type with a few other arrangements such as the Salmson T6.E. In common with other engines produced by this manufacturer, the air-cooled radial engines featured the unorthodox Canton-Unné internal arrangement that dispensed with a master rod in favour of a cage of epicyclic gears driving the crankpin. Production ended in 1951 with the liquidation of the manufacturing company.
British Salmson The 3,7 and 9 cylinder Salmsons were license-built in Great Britain, during the 1920s and 1930s, by the British Salmson engine company as the British Salmson AD.3, British Salmson AC.7, British Salmson AC.9, and British Salmson AD.9.
Salmson post-WWI engines In common with several other French aero-engine manufacturers Salmson named their engines with the number of cylinders then a series letter in capitals followed by variant letters in lower-case. Engines not included in the 1932 table which follows are listed here:
Salmson air-cooled engines available in 1932 are listed here Name Type Year Bore Stroke Capacity Power Weight 7AC 7-cyl radial at 1,800 rpm 9AB 9-cyl radial at 1,700 rpm 9AC 9-cyl radial at 1,800 rpm 9AD 9-cyl radial at 2,000 rpm 9ADb 9-cyl radial at 2,200 rpm 9ADr 9-cyl radial at 2,700 rpm 9NA 9-cyl radial at 1,800 rpm 9NAs 9-cyl radial at 1,800rpm 9NC 9-cyl radial at 1,800 rpm 9NCt 9-cyl radial at 1,800 rpm 18AB 18-cyl 2-row radial at 1,700 rpm 18ABs 18-cyl 2-row radial at 1,700 rpm
Applications Nine cylinder engines
Seven cylinder engines
7AC Albert A-61 Caudron C.191&2 Caudron C.220 Caudron C.270 Dewoitine D.480 Farman F.234 Farman F.280 Farman F.352 Hanriot H.411 Kellner-Béchereau 23 Morane-Saulnier MS.132 Morane-Saulnier MS.148 Potez 36/5
Five cylinder engines
5Ap
Jodel D.123
5Aq Caudron C.109.2 CFA D.7 Cricri Major
5AC
Caudron C.110 Caudron C.161 Jodel D.124 Potez 36/3
Specifications (9 Ab)
See also Salmson water-cooled aero-engines List of aircraft engines
Notes
References
Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. . Cuny, Jean. "Latécoère - Les Avions et Hydravions".Paris. Docavia/Editions Lariviere. 1992.