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首页> 外文期刊>Journal of the American Helicopter Society >Acoustic Characterization of Glaze and Rime Ice Structures on an Oscillating Airfoil via Fully Unsteady Simulations
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Acoustic Characterization of Glaze and Rime Ice Structures on an Oscillating Airfoil via Fully Unsteady Simulations

机译：通过完全不稳定模拟在振荡翼型上的釉料和霜冰结构的声学特征

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摘要

The development of low-cost and simple technologies to improve pilot awareness of icing environments is crucial to improve the safety of rotorcraft, and especially those with limited icing clearance which are admittedly operating within icing environments without full icing clearance. An acoustic characterization of glaze and rime ice structures is hereby introduced to begin to quantify different ice shape noise signatures which directly transcend from the iced performance characteristics to develop acoustic ice detection technologies. The feasibility of the detection technique is assessed for fully unsteady simulations of ice accretion on an oscillating, two-dimensional airfoil. This work focuses on the computational modeling of the experimental database of a rotor airfoil with pitching motion during icing conditions from the NASA Glenn Icing Research Wind Tunnel and computing the resultant noise signals and analyzing their topology.
机译：低成本和简单技术的开发，提高糖霜环境的试点意识至关重要，以提高旋翼飞行器的安全性，特别是糖霜间隙有限的人，这在没有充分锦冰的环境中不可否认地运行。特此引入了釉料和霜冰结构的声学表征，以便开始量化不同冰形噪声签名，其直接超越冰的性能特征来开发声学冰检测技术。评估检测技术的可行性，用于在振荡，二维翼型上的冰增冰的完全不稳定模拟。这项工作侧重于转子翼型的实验数据库的计算建模，通过NASA Glenn结冰研究风洞和计算所得噪声信号并分析它们的拓扑结构。

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