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Variations of flutter mechanism of a span-morphing wing involving rigid-body motions 被引量:2
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作者 Chao HUANG Chao YANG +1 位作者 Zhigang WU changhong tang 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2018年第3期490-497,共8页
The present paper aims to reveal the significance of rigid-body motions for the flutter mechanism of a span-morphing wing model. The inclusion of rigid-body motions into aeroelastic formulation and flutter analysis is... The present paper aims to reveal the significance of rigid-body motions for the flutter mechanism of a span-morphing wing model. The inclusion of rigid-body motions into aeroelastic formulation and flutter analysis is presented. A state-space aeroelastic equation combining the dynamics of stepped Euler-Bernoulli beam with unsteady strip aerodynamic theory is developed by quasi-static modeling. Using a numerical example, variations of flutter mechanism from the bending-torsional flutter to the body-freedom flutter are observed as the span increases. In addition,effects of some dimensionless parameters on the variations of flutter mechanism are investigated.The investigated parameters belonging to the fuselage have limited influences on the bendingtorsional flutter but a significant impact on the body-freedom flutter. 展开更多
关键词 Aeroelasticity Aircraft design Body-freedom flutter Dynamic modeling FLUTTER Rigid body modes Span-morphing
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