The invention relates to the technical field of aerodynamic design of low-speed small unmanned aerial vehicles, and discloses an aerodynamic resistance estimation method of an unmanned aerial vehicle. The method comprises the following steps: establishing a three-dimensional model of the unmanned aerial vehicle, and performing parameterization setting on predetermined parameters in the three-dimensional model to obtain a parameterized model; performing experimental design on the predetermined parameters by using an experimental design method to obtain simulation sample points meeting the identification requirements of the approximate model; all simulation sample points are calculated, and induced resistance, differential pressure resistance and viscous resistance are obtained; an approximate model method is adopted, and an induced resistance factor, an unmanned aerial vehicle turbulence flat plate surface friction coefficient, a first zero-pressure-rise-difference resistance coefficient and a second zero-pressure-rise-difference resistance coefficient are obtained according to the induced resistance, the pressure difference resistance and the viscous resistance; and calculating aerodynamic resistance according to the induced resistance factor, the surface friction coefficient of the turbulent flat plate of the unmanned aerial vehicle, the first zero-pressure-rise-difference resistance coefficient and the second zero-pressure-rise-difference resistance coefficient. Therefore, the aerodynamic resistance estimation precision can be obviously improved.
本发明涉及低速小型无人机气动设计技术领域,公开一种无人机的气动阻力预估方法。其中,该方法包括:建立无人机三维模型,并在三维模型中对预定参数进行参数化设置,得到参数化后的模型;利用试验设计方法对预定参数进行试验设计,以获得满足近似模型辨识要求的仿真样本点;计算所有仿真样本点,获得诱导阻力、压差阻力和粘性阻力;采用近似模型法,根据诱导阻力、压差阻力和粘性阻力获得诱导阻力因子、无人机湍流平板表面摩擦系数、第一零升压差阻力系数和第二零升压差阻力系数;根据诱导阻力因子、无人机湍流平板表面摩擦系数、第一零升压差阻力系数和第二零升压差阻力系数计算气动阻力。由此,可以显著提升气动阻力预估精度。
Aerodynamic resistance estimation method for unmanned aerial vehicle
无人机的气动阻力预估方法
2025-05-30
Patent
Electronic Resource
Chinese
IPC: | B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung |
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