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Oehmichen No.3
 Oemichen was dissatisfied with the modest heights to which No.2 was able to fly, and from the third machine onward he adopted a single main rotor layout, accompanied by two smaller anti-torque rotors. His last design, in 1938, reverted to the balloon-assisted principle of his first aircraft.
Oemichen's third helicopter which appeared in 1924 had a single large rotor with two blades.
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