The GEN H-4 is the world’s smallest helicopter. It weighs 70kg when empty and can fly at a speed of 88 km/h. It can go as high as 10,000 ft (3,000m) and has a flight duration of up to 60 minutes.
The frame of the aircraft is made of two-inch aluminum pipes. Located in front of the pilot is the control pod with the throttle, tachometer, main switch, starter switch and yaw switch.
The aircraft is powered by four twin cylinder engines feeding into a central transmission. Each of the four engines is connected to the transmission through a centrifugal clutch so that if one of the engines stops working, it is overridden by the other three engines and the flight continues.
The aircraft also has two sets of rotors turning in opposite directions thus keeping the helicopter stable by counteracting each other’s torque, so that there is no need for a tail rotor.
The GEN H-4 is quite easy to operate. The pilot controls the helicopter’s rise and descent by pushing the throttle lever. One can choose to fly in a certain direction by simply pulling or moving the control bar in the opposite direction. In order to turn to the right or to the left, one has to push the yaw-control-switch.
For maximum safety a ballistic parachute is provided above the mast plus it is possible to perform a safe emergency landing on two engines.
The GEN H-4 is doesn’t require a pilot’s license for use thus anyone can operate it. The aircraft costs around $30,000 and if you have the money you can actually own your very own personal helicopter