Investigation on the Artificial Bird Projectile used in Bird Strike Test
用于鸟撞试验的仿真鸟弹研究

An artificial bird projectile used in aircraft structure against bird strike experiment was developed. Its basic compositions are gelatine and water. Density is a key parameter controlled by special manufacturing process and adding quenched and tempered materials. The dimension and weight of artificial bird projectile are guaranteed by the mold. Thus, a 1.8kg standard form of bird projectile was manufactured to meet the regulatory requirements. Three real bird strike tests and one artificial bird strike comparative test were carried out. The target is four aluminium plates with 12mm thickness. Results show that the artificial bird projectile has sufficient strength and can withstand launch overload. The dynamic deformation mode and the dynamic strain response time history of structure of artificial bird projectile are basicly consistent with real bird. The maximum difference of structure dynamic strain response is only 3.2%; while the difference of structure residual deformation is 8.7%. Above results prove that the artificial bird projectile developed in this paper can substitute real bird in bird strike experiment.