[1] The S.O.1100 Ariel I was first flown in 1947, it was a light all-metal helicopter with an enclosed two-seat cabin.

At the tip of each blade was a combustion chamber where the air was mixed with fuel and ignited.

[2] The final variant was the S.O.1120 Ariel III which had a combined Turbomeca Arrius turbine-compressor rather than the two units of the earlier aircraft.

[1] The Ariel was not put into production but the knowledge gained was used in the development of the Sud-Ouest Djinn.

Related development Aircraft of comparable role, configuration, and era