(National Aviation University, 2021-04-28) Gulyuk, Vasyl; Гулюк, Василь Ярославович
Unlike a helicopter, which uses a swashplate for control, which changes direction of the lifting rotor thrust, and the total pitch and adequately the magnitude of the rotor thrust, in the quadcopter (QC) the thrust direction relative to the body and the pitch of the rotor blades are unchanged. To change the flight trajectory or angular orientation of the quadcopter, the rotation speed and, accordingly, the magnitudes of the thrust of all four rotors change in a certain way. Thus, the control of QC is reduced to the control of the rotor rotation speed, which greatly simplifies the design of the control system.
