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| Calculation and Experimental Analysis on Different Tail Leading Edge Configurations of Aircraft against Bird Impact |
| Received:July 07, 2020 Revised:August 05, 2020 |
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| DOI：10.7643/issn.1672-9242.2020.09.006 |
| KeyWord:bird impact PAM CRASH CCAR 25 impact |
| Author | Institution |
| DANG Xiao-yan |
AVIC The First Aircraft Institute, Xi'an , China |
| FENG Zhen-zhou |
AVIC The First Aircraft Institute, Xi'an , China |
| HUANG Chao-guang |
AVIC The First Aircraft Institute, Xi'an , China |
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| Abstract: |
| The work aims to find out the tail leading edge configuration with the best energy absorption ability as stipulated in Article 25.631 by investigating the different configurations against bird impact. Combined with the design of tail leading edge structure of a certain type of civil aircraft, three configurations in six schemes were planned for selection. During analysis,SPH was used as bird body and metal materials with the dynamic mechanical properties under different strain rates were applied to carry out the bird impact simulation analysis under structural dynamics. Then, the simulation results were compared with the experimental results of selection and research and development. The simulation results were consistent with experimental results, with higher alignment. Combined with the conditions of energy absorption, the best leading edge layout was selected. The reasonable reliability of the simulation analysis method is verified and the best design scheme in the process of configuration optimization is obtained. |
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