Le Rhône 9C

9C
Le Rhône 9C engine on display at the Imperial War Museum Duxford
TypeRotary engine
National originFrance
ManufacturerSociété des Moteurs Le Rhône
Gnome et Rhône
Union Switch & Signal (US)
Daimler Company (UK)
AB Thulinverken (Sweden)
First run1912
Major applicationsNieuport 11
Sopwith Pup
Number built>10,000
Developed intoLe Rhône 9J

The Rhône 9C is a nine-cylinder rotary aircraft engine produced in France by Société des Moteurs Le Rhône / Gnome et Rhône. Also known as the Rhône 80 hp in a reference to its nominal power rating, the engine was fitted to many military aircraft types during the First World War. Le Rhône 9C engines were also produced under license in Great Britain, the United States and Sweden.