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Sloshing reduced-order models for aeroelastic analyses of innovative aircraft configurations

机译:用于创新飞机配置的空气弹性分析的晃动阶数模型

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The present paper introduces the sloshing effects on aeroelastic stability and response of flying wing configurations. Using reduced order model based on data provided by computational fluid dynamics data, the description of the slosh dynamics is introduced into an integrated modellingthat accounts for both rigid and elastic behaviourof flexible aircraft. The fully unsteady aerodynamics, modelled in the frequency domain via doublet lattice method, is recast in time-domain state-space form through the rational function approximation. The reference aircraft is the Body Freedom Flutter equipped with a single tank of cylindrical geometry, partially filled with water, and located underneath the center of mass. The results of the stability and response analyses are compared with the frozen fluid case with the final aim of showing how the fluid movement affects the complete aircraft behaviour. (C) 2021 Elsevier Masson SAS. All rights reserved.
机译:本文介绍了对空气弹性稳定性的晃动效应和飞行翼配置的响应。 使用基于计算流体动力学数据提供的数据的减少订单模型,将SLOSH动态的描述引入了集成的模型,用于柔性飞机的刚性和弹性行为。 通过Doublet晶格方法在频域中建模的完全不稳定的空气动力学是通过Rational函数近似的时域状态空间形式重新循环。 参考飞行器是配备有单个圆柱形几何形状的身体自由颤动,部分填充用水,位于质心的中心下方。 将稳定性和响应分析的结果与冻流体箱进行比较,最终目的是显示流体运动如何影响完整的飞机行为。 (c)2021 Elsevier Masson SAS。 版权所有。

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