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Gyroptère
Papin et Rouilly Gyroptere
It's a maple seed concept, here are some videos on similar contraptions now being called monocopters.
monocopter - YouTube
Rather ungainly, but they do seem to work in an odd fashion.
Why the guys in 1915 tried to start off of water is puzzling. The instability of a mono hull combined with creating a hole in the water from the air jet could only end in having a bad day out at the lake.
It really was a beautiful machine in it's own way.
Papin et Rouilly Gyroptere
