期刊
JOURNAL OF AIRCRAFT
卷 59, 期 3, 页码 761-773出版社
AMER INST AERONAUTICS ASTRONAUTICS
DOI: 10.2514/1.C036076
关键词
-
资金
- National Key Research and Development Program of China [2016YFB0201800]
- National Natural Science Foundation of China [~11772192]
This study developed a numerical model to analyze bird strikes on a jet engine, established substitute bird models validated with experimental and theoretical results, derived critical ingestion parameter, and investigated the impact of single-bird-ingestion requirements on the engine. Incorporating predictive modeling methodology into engine designs is of great significance for engine manufacturers.
To mitigate the consequences of bird strikes, compliance with bird ingestion requirements must be substantiated by corresponding physical tests relying on a jet engine. However, current simulation models capturing soft-impact damage on the engine are mostly limited to part of the front of the engine, such as fan blades. In this paper, considering relationships and interactions among engine components under normal flight operations, the numerical model of a jet engine subjected to bird strike was developed to evaluate impact damage and the effect of fan rotor unbalancing on the jet engine. First, substitute bird models were established using the smoothed particle hydrodynamics method, and then validated with experimental and theoretical results. Second, to characterize the maximum impact damage, critical ingestion parameter was derived from simulations of the prescribed bird targeted at fan blades at the required bird ingestion conditions. Finally, considering single-bird-ingestion requirements, numerical analysis of a jet engine during impact was investigated. It is of great significance for engine manufacturers to incorporate a predictive modeling methodology of a turbine engine under bird strikes into crashworthiness of engine designs.
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