Analysis of Aerodynamic Characteristics of Bionic Folding Wing During Flapping
Taking the beetle hind wings as a bionic object,a four-plate folding wing like the beetle was designed based on the theory of four-plate mechanism,and its aerodynamic characteristics were studied.A dynamic simulation model of the beetle-like four-plate folding wing was established.Using a two-way fluid-structure coupling numerical simulation method,the effects of flapping amplitude,flapping frequency and forward flight speed on the lift-drag coefficient and air flow field of the flexible fold-ing wing were analyzed.The fluttering process of the flexible folding wing is studied in the flow field.Studies have shown that flex-ible folding wings can improve the lift characteristics and thrust characteristics of the aircraft.When the flapping amplitude is 80° and the frequency is 50Hz,the aerodynamic characteristics of the folding wings are the most significant.This research work laid the foundation for optimizing the design and control of the folding wing.
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