Simulation evaluation and verification of bird ingestion ability of turbofan engine

Abstract

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 birdswallowing capability simulation and verification project of a turbofan, a method for evaluating the bird-swallowing capability of an engine is proposed in this paper based on simulation analysis, momentum analogy and contact stress analogy. According to the relevant standards and specifications, the test requirements are determined, and the birdswallowing test is carried out for four times. It is verified that the method is accurate. The test results and assessment methods can provide reference for the development of other turbofan models.

Keywords

• turbofan engine
• bird ingestion
• simulation analysis
• momentum analogy
• contact stress analogy