Between 1920 and 1951 the

Société des Moteurs Salmson Salmson is a French engineering company. Initially a pump manufacturer, it turned to automobile and aeroplane manufacturing in the 20th century, returning to pump manufacturing in the 1960s, and re-expanded to a number of products and services ...

France France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...

developed and built a series of widely used air-cooled

aircraft engine An aircraft engine, often referred to as an aero engine, is the power component of an aircraft propulsion system. Aircraft using power components are referred to as powered flight. Most aircraft engines are either piston engines or gas turbin ...

s.Gunston 1986, p. 158. Maryse Hilsz 1935

Design and development

After their successful

water-cooled radial engines Cooling tower and water discharge of a nuclear power plant Water cooling is a method of heat removal from components and industrial equipment. Evaporative cooling using water is often more efficient than air cooling. Water is inexpensive and non ...

, 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 A crankpin or crank pin, also known as a rod bearing journal, is a mechanical device in an engine which connects the crankshaft to the connecting rod for each cylinder. It has a cylindrical surface, to allow the crankpin to rotate relative to th ...

. Production ended in

1951 Events January * January 4 – Korean War: Third Battle of Seoul – Chinese and North Korean forces capture Seoul for the second time (having lost the Second Battle of Seoul in September 1950). * January 9 – The Government of the Uni ...

with the liquidation of the manufacturing company.

British Salmson

The 3,7 and 9 cylinder Salmsons were license-built in

Great Britain Great Britain is an island in the North Atlantic Ocean off the north-west coast of continental Europe, consisting of the countries England, Scotland, and Wales. With an area of , it is the largest of the British Isles, the List of European ...

, 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

Applications

Nine cylinder engines

Seven cylinder engines

7AC

* Albert A-61 * Caudron C.191&2 * Caudron C.220 *

Caudron C.270 The Caudron C.270 ''Luciole'' ("Firefly") was a sporting, touring and trainer aircraft produced in France in the 1930s, derived from the Caudron C.230, C.230. Design and construction It was a conventional biplane with single-bay, unstaggered wi ...

* 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)

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. {{Salmson aeroengines Radial engines 1910s aircraft piston engines Salmson aircraft engines