@Eichhörnchen: Not in a Museum in the UK.
@Eisenwurst: Not a Bölkow (Boelkow) BO 310.
Not a helicopter, so no rotors.
But it is an experimental plane.
It is not a Boelkow/Blohm Project. But like with the Derschmidt rotors of the Bo 310 and 46, the inventor of this thing patented his idea.
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>^..^<*)))>{ All generalizations are wrong.
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