The SNCASE SE.3120 Alouette ("Lark") was a utility helicopter developed in France in the early 1950s but which did not enter production.
The Alouette featured an open-framework fuselage behind a cockpit that was enclosed by a bubble canopy.
[1] The first flight took place on 31 July 1951 at Buc, Yvelines with test pilot Henri Stakenburg at the controls.
[2] On 2 July 1953, Jean Boulet flew one of the two prototype Alouettes to a world closed-circuit distance record for a helicopter in this class, covering 1,252 km (778 mi) in 13 hours and 56 minutes.
Data from Jane's All The World's Aircraft 1953–54[3]General characteristics Performance