René Mouille was born in 1925. He joined SNCASE in 1946 , where very quickly his talents as a designer were realised.He became responsible for the study of helicopter design under Pierre Renoux. After designing and perfecting the SE 3120 Alouette I, with which several records are established,he is put it in charge of drawing the SE 3130 Alouette II, on which he worked with Charles Marcchetti. This became a very succesful design, with more than 1300 aircraft constructed. His next projects were the Alouette III, the Puma, and the Gazelle. He has filed over 100 patents, incluing many of which became important on French helicopters eg the rotor anti-couple of the SE 3200 Frelon.