Birdstrike: Approaches to the Analysis of Impacts with Penetration

Birdstrike is one of the most dangerous threats for flight safety and, therefore, aircraft before being put into operational service have to be certified for a proven level of bird impact resistance. Since the experimental tests are expensive and difficult to perform, numerical techniques are usually used to develop high-efficiency bird-proof structures. In this work, bird strike and (subsequent) penetration inside the airframe are investigated. Different models of bird are considered: advantages and disadvantages of which have been discussed with regard to the impact of a bird against the intake of a turbofan engine.