The University of Southampton
University of Southampton Institutional Repository

Wave propagation in an aircraft wing slat for de-icing purposes

Wave propagation in an aircraft wing slat for de-icing purposes
Wave propagation in an aircraft wing slat for de-icing purposes
Ice accretions on aircraft lifting surfaces must be removed in flight to avoid catastrophic accidents. Conventionally, this is done effectively but inefficiently by bleeding hot air from the engines prompting a number of low energy approaches to be explored that use high amplitude shock or vibration. One recently proposed method, which has so far been successfully implemented for a beam, generates a shock response at a target position by focusing elastic waves in time and space from a single actuator. However, prior knowledge of the dispersion characteristics of such waves is required. In order to extend the applicability of the technique, this paper aims to predict the dispersion curves of waves propagating along the leading edge of a Boeing 737 wing slat. A semi-analytical finite element (SAFE) model is implemented in Comsol Multiphysics software. By assuming a spatially harmonic displacement field in the direction of propagation only the 2-D cross section of the waveguide needs to be meshed.
Dispersion curves are presented for the leading edge portion of the erosion shield under several assumed sets of boundary conditions. The dispersion curves are compared with measured results from laboratory tests conducted on the real wing slat and found to be in good qualitative agreement. The model will be further developed to predict interfacial shear stresses between the wing skin and accreted ice under transient loading.
wave analysis, dispersion, aircraft, ice removal, semi-analytical finite element method
1-4
Raffaele, Davide
8a03166d-36ef-4b27-98ce-dfb57eb2237d
Waters, Timothy
348d22f5-dba1-4384-87ac-04fe5d603c2f
Rustighi, Emiliano
9544ced4-5057-4491-a45c-643873dfed96
Raffaele, Davide
8a03166d-36ef-4b27-98ce-dfb57eb2237d
Waters, Timothy
348d22f5-dba1-4384-87ac-04fe5d603c2f
Rustighi, Emiliano
9544ced4-5057-4491-a45c-643873dfed96

Raffaele, Davide, Waters, Timothy and Rustighi, Emiliano (2020) Wave propagation in an aircraft wing slat for de-icing purposes. Euro-Mediterranean Conference on Structural Dynamics and Vibroacoustics, , Napoli, Italy. 17 - 19 Feb 2020. pp. 1-4 .

Record type: Conference or Workshop Item (Paper)

Abstract

Ice accretions on aircraft lifting surfaces must be removed in flight to avoid catastrophic accidents. Conventionally, this is done effectively but inefficiently by bleeding hot air from the engines prompting a number of low energy approaches to be explored that use high amplitude shock or vibration. One recently proposed method, which has so far been successfully implemented for a beam, generates a shock response at a target position by focusing elastic waves in time and space from a single actuator. However, prior knowledge of the dispersion characteristics of such waves is required. In order to extend the applicability of the technique, this paper aims to predict the dispersion curves of waves propagating along the leading edge of a Boeing 737 wing slat. A semi-analytical finite element (SAFE) model is implemented in Comsol Multiphysics software. By assuming a spatially harmonic displacement field in the direction of propagation only the 2-D cross section of the waveguide needs to be meshed.
Dispersion curves are presented for the leading edge portion of the erosion shield under several assumed sets of boundary conditions. The dispersion curves are compared with measured results from laboratory tests conducted on the real wing slat and found to be in good qualitative agreement. The model will be further developed to predict interfacial shear stresses between the wing skin and accreted ice under transient loading.

This record has no associated files available for download.

More information

Published date: 17 February 2020
Venue - Dates: Euro-Mediterranean Conference on Structural Dynamics and Vibroacoustics, , Napoli, Italy, 2020-02-17 - 2020-02-19
Keywords: wave analysis, dispersion, aircraft, ice removal, semi-analytical finite element method

Identifiers

Local EPrints ID: 446281
URI: http://eprints.soton.ac.uk/id/eprint/446281
PURE UUID: 58df4d29-0a02-41a6-9092-a53a2525965f
ORCID for Davide Raffaele: ORCID iD orcid.org/0000-0001-9131-7262
ORCID for Emiliano Rustighi: ORCID iD orcid.org/0000-0001-9871-7795

Catalogue record

Date deposited: 03 Feb 2021 17:34
Last modified: 16 Mar 2024 10:43

Export record

Contributors

Author: Davide Raffaele ORCID iD
Author: Timothy Waters

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×