Rapid design method of electric propulsion propeller

Abstract

The invention relates to a rapid design method of an electric propulsion propeller. The method comprises the following steps: S1, determining the overall design technical requirements of an electric propulsion unmanned aerial vehicle; s2, the designed rated rotating speed omega and the designed diameter D of the propeller are determined; s3, determining airfoil profile configuration; s4, preliminarily determining chord length distribution b (x) by adopting a statistical experience method; s5, determining torsion beta (x) distribution; s6, evaluating the performance of the propeller; s7, the relation between the thrust T and the thrust Tdesign required by design is judged and calculated; s8, calculating energy consumption; according to the design method, complex three-dimensional shape optimization is not needed in the design of the propulsion propeller, only a few overall design parameters are needed to be input, the design precision requirement of the propeller in the overall scheme demonstration stage of the electric propulsion unmanned aerial vehicle can be met, and the requirement for rapid evaluation is met. Verification calculation proves that the design method is reliable in calculation precision, the design period of the propeller is greatly shortened, and the requirements for rapid design and precision of the propeller in the overall scheme demonstration stage of the electric propulsion unmanned aerial vehicle are met.

Description

technical field [0001] The invention belongs to the field of power system design of an electric unmanned aerial vehicle, and in particular relates to a rapid design method of an electric propulsion propeller. Background technique [0002] With the rise of general aviation, UAVs are used more and more widely. Whether in military or civilian fields, UAVs are mainly divided into two types: electric and oil-driven according to different power sources. Compared with oil-driven, Electric UAVs have the advantages of simple power system structure, large payload, simple operation, and environmental protection. Therefore, the existing small and medium-sized UAVs basically tend to adopt electric drive forms. As the core of the power system of the electric UAV, the propeller has a complex working flow field and is difficult to design. The conventional design method is mainly based on the optimization design of the surrogate model. The calculation methods include numerical calculation a...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of long iterative cycle and difficult convergence of conventional propeller design methods, the present invention provides a rapid design method for electric propulsion propellers, the purpose of which is to provide a rapid propeller design method for the demonstration stage of the overall scheme of electric propulsion UAVs

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