Le Rhône 9C

9C
Le Rhône 9C engine installed in a Sopwith Pup at the Royal Air Force Museum London
Type Rotary engine
National origin France
Manufacturer Société des Moteurs Le Rhône / Gnome et Rhône, Union Switch & Signal (US), Daimler Company (UK), AB Thulinverken (Sweden)
First run 1912
Major applications Nieuport 11, Sopwith Pup
Number built >10,000
Developed into Le Rhône 9J

The Le 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 Le 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.