Experimental Study into Optimal Configuration and Operation of Two-Four Rotor Coaxial Systems for eVTOL Vehicles

Coaxial rotors are utilized in multirotor aerial vehicles for the added thrust compared to independent while keeping similar area footprints; however, performance losses should be considered. This experimental study analyzes effects of varying motor duty cycle and propeller pitch values motor-propeller systems with two four coaxial rotors. The results demonstrate that a two-rotor system, lessen adverse front rotor’s backwash operate at maximum performance, only back operated initially up 75% before using its cycle. Additional requirements generated from rotor then their cycles. In two, three, four-rotor setups, total output is 1.6, 2.1, 2.5 times system 86%, 76%, 66%, respectively, an isolated rotor. setup, achieved when gradually increase first last gradual increments also result more uniform sharing among