Morphing aircraft wing variable-sweep: two practical methods and their aerodynamic characteristics
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Graphical Abstract
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Abstract
In order to explore the methods of morphing aircraft variablesweep and their aerodynamic characteristics, numerical simulation of the flow fields of a rotating variablesweep wingbody and a shearing variablesweep wingbody was conducted, and the aerodynamic characteristics and its mechanism were analyzed. Numerical simulation method of viscous compressible flow and hybrid grid of prismhexahedron were used. The results demonstrate that: shearing variablesweep has better characteristics than rotating variablesweep in that the former has better lifttodrag ratio and drag when flying at a speed in the range from M∞ 0.3 to M∞ 0.8, and the main reason is distinct flow field structure caused by the different variablesweep methods.
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