首页> 外文会议>AHS Specialists Conference on Aeromechanics Design for Transformative Vertical Flight >Investigation of Blade Loads on a Modern High-Speed Lift-Offset Coaxial Helicopter using Coupled Computational Fluid Dynamics/Computational Structural Dynamics
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Investigation of Blade Loads on a Modern High-Speed Lift-Offset Coaxial Helicopter using Coupled Computational Fluid Dynamics/Computational Structural Dynamics

机译:使用耦合计算流体动力学/计算结构动态的现代高速升降偏移同轴直升机叶片载荷研究

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Three different aerodynamic models are used to analyze a modern lift-offset coaxial helicopter in high-speed cruise. The first and simplest method, dynamic inflow, is used along with Computational Structural Dynamics (CSD) to determine the trimmed flight conditions at speeds up to 250 kt. Two higher order models, the Viscous Vortex Particle Method (VVPM) and Computational Fluid Dynamics (CFD) are then used to evaluate the same trimmed condition at a speed of 230 kt. VVPM is capable of capturing the rotor to rotor interference from first-principles at a significantly lower cost than CFD. The high resolution CFD solution revealed significant deviations in the airloads from the values obtained with the first two methods.
机译:三种不同的空气动力学模型用于分析高速巡航中的现代升降偏移同轴电缆。第一和最简单的方法,动态流入,以及计算结构动态(CSD)一起使用,以在高达250 kt的速度下确定修剪的飞行条件。然后,使用两种更高阶模型,粘性涡旋颗粒方法(VVPM)和计算流体动力学(CFD)以以230kt的速度评估相同的修整条件。 VVPM能够以比CFD的成本显着更低的成本,使转子捕获转子的转子干扰。高分辨率CFD溶液揭示了从用前两种方法获得的值的空降中的显着偏差。

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