First flight of SNCASO SO-1220

Friday, January 2, 1953



Success with the earlier S.O. 1100 Ariel, also powered by tip jets, encouraged Sud-Ouest to pursue further work in tip jet propulsion. A single-seat testbed was designated S.O. 1220, and conducted its maiden flight January 2, 1953. It was a simple open framework with an exposed seat for the pilot, and functioned as an aerial test platform for the tip jet propulsion concept.

Test flights of the S.O. 1220 proved that tip jets were a viable propulsion system. The S.O. 1220 was developed further to become the tip jet driven rotor helicopter that was produced as the S.O. 1221S Djinn.


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