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Effects of Rolling Maneuver on Divergence and Flutter of Aircraft Wing Store

机译:滚动动作对飞机机翼存放处发散和颤动的影响

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摘要

The effects of the rolling maneuver on the static and dynamic aeroelastic instabilities of a cantilever wing with annexternal store are investigated. The structural model is based on the Goland wing and unsteady aerodynamicnpressure loadings are considered. To accurately consider the spanwise location and properties of the attachednexternal mass, the generalized function theory is used. The aeroelastic governing equations are proposed usingnHamilton’s variational principle and include coupling between the roll angular velocity of themaneuver and thewingnelastic degrees of freedom. The solution to the resulting partial differential equations is followed by an application ofnthe extended Galerkin method. Numerical simulations are validated against the exact flutter speed of the Golandnwing and available theoretical and experimental results. In addition, the effects of the roll angular velocity, sweepnangle, and store mass and location on the wing divergence and flutter are illustrated.
机译:研究了滚动操纵对带有附件库的悬臂机翼静态和动态气动弹性不稳定性的影响。结构模型基于Goland机翼,并考虑了非稳态空气动力压力载荷。为了精确地考虑附着的外部质量的翼展方向位置和性质,使用了广义函数理论。空气弹性控制方程是根据汉密尔顿的变分原理提出的,包括操纵的侧倾角速度与机翼弹性自由度之间的耦合。所得偏微分方程的解法之后是扩展的Galerkin方法的应用。针对Golandnwing的精确颤动速度以及可用的理论和实验结果对数值模拟进行了验证。此外,还说明了侧倾角速度,后掠角以及存储质量和位置对机翼发散和颤振的影响。

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