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Aeroelastic stability analysis of a bird-damaged aeroengine fan assembly

机译:鸟形损坏的航空发动机风扇组件的气动弹性稳定性分析

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摘要

Bird strike is a major consideration when designing fan blades for large-diameter aeroengines. Current methods rely on impact tests and structural optimisation but it is highly desirable to have predictive numerical models to assess the aerodynamic and aeroelastic stability of bird-damaged fan assemblies. The aim of this paper is to present such a methodology and to study a representative case. The particular fan assembly under investigation contained two consecutive blades with unequal impact damage, the so-called heavy-damage and medium-damage blades.
机译:在为大直径航空发动机设计风扇叶片时,鸟击是主要考虑因素。当前的方法依赖于冲击试验和结构优化,但是非常需要具有可预测的数值模型来评估鸟类损坏的风扇组件的空气动力学和气动弹性稳定性。本文的目的是介绍这种方法并研究一个典型案例。被调查的特定风扇组件包含两个连续的叶片,具有不相等的冲击损坏,即所谓的重损坏和中损坏叶片。

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