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首页> 外文会议>AHS(American Helicopter Society International) Specialists Conference on Aerodynamics; 20080123-25; San Francisco,CA(US) >Vibration and Noise Reduction of Helicopter Rotors Using an Active/Passive Approach
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Vibration and Noise Reduction of Helicopter Rotors Using an Active/Passive Approach

机译：主动/被动方法降低直升机旋翼的振动和噪声

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摘要

The effectiveness of augmenting structurally optimized blades for vibration and noise reduction with active control trailing edge flaps is studied. A flight condition characterized by significant blade-vortex interaction (BVI) effects is examined. Surrogate based optimization based on the Efficient Global Optimization (EGO) algorithm was used to conduct a global search of the design space for low vibration and noise designs. However, the optimum vibration design was not the same as the optimum noise design. Therefore multi-objective function optimization techniques were employed to locate the best trade-off, or Pareto optimal, designs. Active control flaps were added to the structurally optimized blades and the best active/passive configurations were identified.
机译：研究了通过主动控制后缘襟翼增强结构优化叶片来降低振动和噪声的有效性。检查了以明显的叶片－涡旋相互作用（BVI）效应为特征的飞行状态。基于高效全局优化（EGO）算法的基于替代的优化用于对低振动和噪声设计的设计空间进行全局搜索。但是，最佳振动设计与最佳噪声设计不同。因此，采用多目标函数优化技术来确定最佳权衡或帕累托最优设计。主动控制襟翼被添加到结构优化的叶片中，并确定了最佳主动/被动配置。

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