Design and bird-strike resistance performance research of civil aircraft tail leading edge using different auxiliary spars

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Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (8) : 237-246.

GAO Jun1， WU Zhibin1，2， KONG Lingyong1， LI Qi1

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Abstract

Civil aircrafts have high requirements for the bird strike performance of a tail leading edge. The original auxiliary spar of a civil aircraft tail leading edge was an aluminum alloy machine part. Two novel configurations of the tail leading edge using aluminum alloy sheet metal auxiliary spars were proposed to optimize its bird strike resistance performance. The bird strike resistance of the three leading edges was calculated by the PAM-CRASH software, and the better one of the two new configurations was selected as the preferred configuration according to the analysis results. Bird strike tests were carried out for the original configuration and optimal configuration of the leading edge, and post-test simulations were carried out. The numerical calculation and test results show that the sheet metal auxiliary spar structure with corrugated stiffeners has no hard points, and the material has good ductility, which can absorb the energy during bird strike through large structure deformation and of many fasteners failure. The new structure greatly improves the bird strike resistance performance of the tail leading edge, and has obvious weight advantages, which can be applied to the civil aircraft tail leading edge design.

Key words

bird strike / leading edge / auxiliary spar / machining part / sheet metal part / corrugated stiffeners

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GAO Jun1， WU Zhibin1，2， KONG Lingyong1， LI Qi1. Design and bird-strike resistance performance research of civil aircraft tail leading edge using different auxiliary spars[J]. Journal of Vibration and Shock, 2021, 40(8): 237-246

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