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Applied Composite Materials

, Volume 26, Issue 1, pp 1–13 | Cite as

On the Bird Impact Damage Assessment of Rotorcraft Horizontal Stabilizer

  • Vijaya Kumar RayavarapuEmail author
Article
  • 491 Downloads

Abstract

The soft body high energy impact response on rotorcraft composite layered structures is investigated by analysis based on tests carried out. The experimentally and numerically assessed deformation and energy absorption capabilities of Horizontal stabilizer is attributed under high energy bird impact, which is an important aspect in the computer simulations for correlation studies followed by any design modifications. The ability to withstand bird impact of forward facing components is one of the major requirements of rotorcraft to comply bird strike certification test requirement. The main difficulties encountered in achieving accurate finite element analysis are related to modeling of the bird which undergoes severe deformations and the state-of-the art of composite layered modeling. The current study further investigates the impact behavior of soft body projectiles on Horizontal stabilizer through full scale testing.

Keywords

Bird strike Damage Assessment Layered composite structure Modelling of layered composite material 

Notation

c0

Speed of sound in medium

ρ0

Initial density of the substitute bird

Vsh

Shock velocity

Vim

Impact velocity

P

Pressure exerted on target

Psh

Shock pressure

Pstag

Stagnation pressure

Pad

Normalized pressure

tad

Normalized time

t

Time

D

Diameter of the bird

L

Length of the bird

C1,C2,C3

Bulk modulus

μ

Density ratio

k

Experimental constant

EOS

Equation of State

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Copyright information

© Springer Science+Business Media B.V., part of Springer Nature 2018

Authors and Affiliations

  1. 1.Rotary Wing Research & Design CentreHindustan Aeronautics LimitedBangaloreIndia

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