To do this, he added four servos on each arm of the quad, giving each rotor collective pitch, just like the tail rotor of a real helicopter. The result is a quadcopter that can fly upside-down ...

Collective pitch on a quadcopter is much simpler than it is on the main rotor of a traditional helicopter. R/C and full-scale helicopters mix collective and cyclic pitch to articulate the main ...

Moving the helicopter is done with the controls inside of the helicopter: the Collective, the Cyclic and the Tail Rotor pedals. The Pave can also be folded up and fit inside of a larger plane for ...

This is the dramatic moment a helicopter spins out of control and ... He then felt a 'violent lurch' to the right, lowered the collective, but remembered nothing afterwards. The National ...