| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a helicopter which can shorten the development and testing periods and markedly reduce the cost by simplifying a conventional helicopter.SOLUTION: An airframe 1 is externally shaped on the basis of a body of rotation as far as possible so that a necessary transport space can simply be secured, and its control can very simply carried out during flight. Further, a double inversion rotor 2 is mounted above the same. Most use is made of this double inversion rotor mechanism and the function of a gyro to enable a stable flight. In this way, the structure of a helicopter is very simplified.</p> |
