Оптимальный вертикальный подъем электрического мультикоптера

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Оптимальный вертикальный подъем электрического мультикоптера
Инженерный журнал: наука и инновации # 11·2016 15
Optimum vertical ascent of an electric multicopter
© S.Z. Sverdlov
Vologda State University, Vologda, 160000, Russia
We consider the problem of a vertical climb that minimises battery power consumption.
We obtained equations for the velocities of optimum and quasi-optimum ascent along
with an equation for computing aircraft thrust-to-weight ratio that ensures optimum as-
cent. We studied the effect that varying the electric motor energy conversion efficiency
had on optimum ascent computations. We derived an equation for estimating the electric
motor energy conversion efficiency in aircraft hover mode. The article presents propeller
aerodynamic parameters required for determining the optimum ascent.
Keywords: multi-rotor unmanned electric helicopter, multicopter, optimum vertical as-
cent, energy conversion efficiency, specific power consumption, thrust-to-weight ratio,
aircraft power plant, brushless electric motor.
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Sverdlov S.Z., Cand. Sci. (Eng.), Professor, Department of Applied Mathematics, Vologda
State University. Specializes in information technology, digital photography and
image processing, unmanned helicopters. e-mail: