SYSTEM MODELLING AND PID CONTROL SYSTEM OF FOUR ROTOR HELICOPTER Author:Amit Kumar,Saurav Kumar Singh,Dipti Ranjan Biswal Abstract:Four Rotor helicopter as the name suggests has four rotors .The controls system for such a craft is complex, as it

This paper will present detailed procedure of how to construct a basic mathematical model that represents general longitudinal helicopter flight dynamics. englich and french document