Mathematical Modeling of Operation of the Electrically Driven Propeller

The paper presents a mathematical model of operation of the power plant of an electrically driven unmanned aerial vehicle with propellers. This model is designed to calculate the UAV aerodynamic and flight performance. To correctly account for changes in the efficiency of the propeller and the electric motor by speed, it is proposed to jointly solve a system of equations describing their operation. An algorithm is given for solving the system of transcendent equations determining the voltage and current values that provide a required propeller thrust. It is shown that the proposed algorithm gives a reliable result that corresponds to the available experimental data.