To provide a safe, compact and lightweight private helicopter wherein an airborne function is operated by a synergistic effect.

A small rotary blade 2 is employed by a propeller and a disk blade, a smooth airborne function is provided by the operations of a disk machine body 7 and a horizontal stability plate 4, stable descending is realized by operating a disk main blade 3 in a reverse direction while providing a braking effect, a safe operation such as opening of a parachute for preventing shocks immediately before landing and a direct falling clashing accident is prevented.