| Citation: | Shao Shuai, Han Fangjun, Zhang Haiyang, et al. Improved design for bird impact resistance of shouldered aero-engine fan blades[J]. Journal of Aerospace Power, 2026, 41（X）：20250563 doi: 10.13224/j.cnki.jasp.20250563
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To improve the bird impact resistance of shouldered aero-engine fan blades, a new design method is investigated. The bird strike on fan-blades simulation in the rotating state was verified with a comparison to the experiment. By studying bird-impact induced failures at different locations and the sensitivity of structural parameters, the risk locations and the key structural parameters affecting the bird impact resistance were identified. An new design was proposed. The results show that the 57% to 83% blade height on the leading edge is the weak location range of bird impacts on the shouldered fan blades; the thickness of the leading edge fillet and the thickness of the leading edge profile are the key structural parameters that affect the bird impact resistance of blades. Increasing the two parameters can effectively improve the bird impact resistance of the blade. The bird impact resistance improvement design scheme can be applied to engineering design.
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