| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a propulsion device applicable to an airplane, a helicopter, a marine vessel, or the like and high in operation efficiency by fitting a plurality of propellers into an outer peripheral frame of ring shape, and rotating the outer peripheral frame by power to obtain driving force. SOLUTION: In the case of a propulsion device for a helicopter, posts 35 are erected above a fuselage 300 with persons on board, and an outer peripheral frame 15 of ring shape is turnably supported on the upper end of each post 35 through a bearing mechanism 30. A plurality of propellers 10 are fitted into the outer peripheral frame 15. The outer peripheral frame 15 is rotated by the rotational force of an engine 150 through a rotation transmission gear 40 to obtain driving force, and the helicopter is levitated to fly.</p> |
