To launch a man under safe and ideal conditions while considering the body weight of an occupant or a desired altitude, launching speed or launching angle by performing a control so as to generate lowest ejecting speed and constant velocity sections intended to stabilize the aerial posture of a man to be ejected just before ejection.

Prior to the flying of a man, the body weight of an occupant 2 is measured by a weight scale, and the acceleration is set from the body weight. After the launching speed and launching angler are set, the launching switch of a control board is operated. A current is then carried to solenoid valves 11, 12, the pressure of a first air tank 7 acts on a disc brake to release the brake, and the pressure of a second air tank 8 also acts on a clutch to connect a driving shaft to an occupant carrier. Thus, the occupant 2 getting on the carrier is accelerated, and when the speed reaches the set speed, the occupant 2 is moved in a prescribed constant velocity section, and then launched from a cylinder 3 toward a water surface or receiving net.