小涵道比涡扇发动机吞鸟能力仿真评估与验证

军用航空发动机的吞鸟能力须满足国军标和适航相关规定，可靠的发动机吞鸟能力评估方法是开展吞鸟试验的基础，可降低试验风险、提高试验成功率。以国内某涡扇发动机研制中的吞鸟能力仿真与验证项目为基础，提出基于仿真分析、动量类比法和接触应力类比法的发动机吞鸟能力评估方法。根据相关标准规范，确定试验要求，开展整机吞鸟试验验证，通过4 次整机吞鸟试验，验证了本文提出的发动机吞鸟能力评估方法的准确性，获得了发动机吞鸟能力底数。试验结果和评估方法可为其他涡扇发动机型号研制提供参考。

Simulation evaluation and verification of bird ingestion ability of turbofan engine

The bird-swallowing ability of engine must meet the requirements of the national military standard and airworthiness. It is necessary to propose a reliable method to assess the bird-swallowing ability of the engine before bird-swallowing tests, the test risk can be reduced and the test success rate can be increased. Based on the bird-swallowing capability simulation and verification project of a turbofan, this paper proposes a method for evaluating the bird-swallowing capability of an engine based on simulation analysis, momentum analogy and contact stress analogy. According to the relevant standards and specifications, the test requirements were determined, and the bird-swallowing test was carried out and verified.The test results and assessment methods can provide reference for the development of other turbofan models.