Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 140,390 pages of information and 227,382 images on early companies, their products and the people who designed and built them.
The Le Rhône was a popular rotary aircraft engine produced in France by Société des Moteurs Le Rhône around 1916. It powered a number of military aircraft of the First World War.
Although not powerful, the largest gave 130 hp, they were dependable rotary engines.
The Le Rhone 9 was a development from the Le Rhone 7, a seven cylinder design.