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Control of the helicopter

The present prototype can be operated with a standard RC transmitter.

No special helicopter mixing is needed, the only mixing used is a V-tail mixer that mixes
the throttle and rudder controls before they go to two separate speed regulators, one for
each main motor. The third motor is controlled by the elevator stick, using a small forward
and reverse controller. This motor drives the small rotor at the back of the helicopter.

The control functions are:

Vertically, the helicopter is controlled by the speed of the two main rotors. Because
the torque driving the rotors in opposite direction is balanced and because the aircraft
is passively stable, little or no other control inputs are required.

Yaw control, turning the helicopter from side to side, is achieved by simply increasing
the speed of one rotor and reducing the speed of the other rotor by the same amount.

Horizontally, the helicopter is only controlled in forward and aft direction using the
small rotor at the back. To direct the aircraft sideways, it is necessary to first turn
the aircraft, and then enter into forward flight in the desired direction.

Key benefits of the control of this helicopter:

  • It is very easy to fly, you do not need any experience with model aircrafts to fly it

  • Except from vertically you operate it as a model car, forward, back and turning

  • If you loose control, simply let go of the control sticks and the helicopter will stop
    and go into stable hover (you still need to control it vertically)

Limitations: The Proxflyer is optimized for indoor use and it is stable with respect
to the surrounding air and can therefore not be operated under winy conditions.

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