Bird Dummy for Investigating the Bird-Strike Resistance of Aircraft Components

Abstract

This paper deals with making a bird dummy for testing the bird-strike resistance of aircraft components. A new bird dummy has been offered. It differs from existing analogs by reproducing the impact impulse with high accuracy. Besides, it is easy to make, store, and clean up its fragments after tests. The bird dummy is made of silicon that models the bird's muscular tissue. It also has plastic ball fillers for modeling the skeleton and the cavities inside the bird. The results of comparative experimental research in strain occurring in a steel target plate and the elements of aircraft transparencies, as well as the damages of an aircraft vertical stabilizer during impact with the dummy and a real bird, are given. Data are presented for different impact angles and velocities. Comparative experiments have shown that using the dummy offered for testing the bird-strike resistance of aircraft components is a viable option. Nomenclature= bird mass M ball = ball mass M d = dummy mass P 0 = pressure of compressed air r = dummy radius r ball = ball radius S b = area of the bird's midlength section S d = cross-sectional area of the cylindrical part of the dummy= strain of steel plate along the x axis ε y = strain of steel plate along the y axis ε 1 , ε 2 , ε 3 = strains for the left-side window of cockpit transparencies ρ = density ρ av = average bird density ρ ball = ball density ρ m = density of a bird's muscular tissue

Transient Response of a Multilayered Composite Rotating Airfoil Under Slicing-Impact Loading

“…The lateral and longitudinal motions were coupled through Coriolis forces, which made it possible to determine the shock type of effective imbalance load on the rotor. Until now, this type of analysis of a high-velocity impact event involving a multilayered composite had been performed on specific airfoils only using finite-element explicit codes [1,11,16,22], where the model size and the very small time-step size Δt had always been an issue. This is the first semiclosed-form analytical formulation and numerical solution of its kind, which has ever been attempted.…”

Managing Airline Emissions, Noise, and Bird Strikes: Passengers’ Perspectives on Airlines’ Extrinsic and Intrinsic Environmental Practices

“…The process of bird collisions with airplanes concerns human life, as a plane can crash once a bird strikes with the plane, resulting in the loss of human life, the birds' lives, and environmental protection. Due to the importance of the topic of bird collisions with airplanes, bird collision has its department, which is called Airport Bird Hazard Management (ABHM) [35]. This department, which is located at most international airports, aims to try to reduce the risk of aircraft colliding with birds to avoid damage to both sides by collecting and analyzing information about flocks of birds, their movements, and how to avoid them on the part of pilots [36].…”

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