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A flapping wing aerodynamic characteristic analysis method based on two-dimensional plane hovering

A technology of aerodynamic characteristics and analysis methods, applied in the field of flight mechanics, can solve problems such as the inability to analyze the aerodynamic characteristics of biological thin wings

Inactive Publication Date: 2019-03-08
SHANGHAI MARITIME UNIVERSITY
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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for analyzing the aerodynamic characteristics of flapping wings based on two-dimensional plane hovering to at least solve the technical problem in the prior art that the aerodynamic characteristics of thin biological wings vibrating at high frequencies cannot be analyzed

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  • A flapping wing aerodynamic characteristic analysis method based on two-dimensional plane hovering
  • A flapping wing aerodynamic characteristic analysis method based on two-dimensional plane hovering
  • A flapping wing aerodynamic characteristic analysis method based on two-dimensional plane hovering

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[0098] The present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0099] In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", " The orientations or positional relationships indicated by "top", "bottom", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation, so they cannot be understood as Limitations on the Invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense, for example, it can be fi...

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Abstract

The invention provides a flapping wing aerodynamic characteristic analysis method based on two-dimensional plane hovering. The aerodynamic characteristic analysis method comprises the following stepsof step 1 determining a research scheme; step 2 modeling of a two-dimensional airfoil: selecting a standard airfoil in a low-speed airfoil series; step 3 setting a user-defined function UDF: on the basis of the step 2, compiling a plurality of groups of different UDF functions by adopting a control variable method according to the phase angle of the primarily-selected flapping wing and the frequency of the primarily-selected flapping wing; 4 calculating a lift coefficient and a resistance coefficient; 5 calculating a mean value and analyzing a numerical simulation result. According to the two-dimensional plane hovering flapping wing aerodynamic characteristic analysis method provided by the invention, the aerodynamic characteristics of a real high-frequency vibration biological thin wing during hovering can be simulated; the relation between the average lift-drag coefficient and the frequency and phase angle is analyzed through numerical calculation, so that the most appropriate flapping wing frequency and phase angle are preferably selected, and the method has the meanings of an unpredictable for the design of the bionic flapping wing aircraft at present.

Description

technical field [0001] The invention belongs to the field of flight mechanics, and in particular relates to a method for analyzing aerodynamic characteristics of flapping wings based on two-dimensional plane hovering. Background technique [0002] At present, in nature, there are a large number of flying creatures, including nearly one million flying insects and birds, and nearly 100,000 flying birds. These flying creatures all use flapping wings Therefore, it can be seen that the flapping wing flight is the most traditional method that has survived the long biological evolution after the elucidation of time. The way of flying, this way of flapping wings is also the best way of flying for creatures. Compared with fixed-wing and rotary-wing flying, flapping-wing flight can integrate the functions of lifting, hovering and propulsion into one flapping-wing system, so that the aircraft can take off and hover freely at low speed like dragonflies, fruit flies and other insects ,...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/15G06F2119/06G06F30/20Y02T90/00
Inventor 梅潇韩国庆
Owner SHANGHAI MARITIME UNIVERSITY
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