Alberto Santos-Dumont helped fund experimentation on designs in France.

Multiple examples were built, demonstrated, crashed, improved and rebuilt owing to conflicting and different names for the various versions.

[4] The main rotor shaft was able to tilt slightly for forward control.

In September 1923, a 1 km flight attempt was nearly completed, before the vehicle crashed.

On 24 March 1924 Étienne Oehmichen set a world helicopter record flight of 358m.