FLUTTER ANALYSIS OF THE BENCHMARK SUPERCRITICAL WING IN THE PRESENCE OF SHOCK BUFFET

Lior Poplingher, Daniella E. Raveh

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The paper presents flutter analyses of the Benchmark Supercritical Wing, at moderate angles of attack, performed as part of the Third Aeroelastic Prediction Workshop. Aeroelastic simulations of the pitch and heave spring-suspended wing were performed using the EZAir flow solver at an ambient Mach number of 0.8, angles of attack ranging from one to five degrees, and various dynamic pressure values. Flutter onset was detected and compared with experimental data, where available. The focus of the study was twofold: 1) Studying the angle of attack effect on flutter onset and mechanism at this transonic Mach number, and 2) Studying the possible relation between shock buffet and the aeroelastic response. Simulations indicate that as the angle of attack increases, shock buffet occurs, the flutter-onset dynamic pressure decreases significantly, and the flutter mechanism changes from two-degrees-of-freedom to single-degree-of-freedom pitch oscillations.

Original languageEnglish
Title of host publicationProceedings of the International Forum of Aeroelasticity and Structural Dynamics 2022, IFASD 2022
EditorsPablo Fajardo
PublisherInternational Forum on Aeroelasticity and Structural Dynamics (IFASD)
ISBN (Electronic)9788409423538
StatePublished - 2022
Event19th International Forum on Aeroelasticity and Structural Dynamics, IFASD 2022 - Madrid, Spain
Duration: 13 Jun 202217 Jun 2022

Publication series

NameProceedings of the International Forum of Aeroelasticity and Structural Dynamics 2022, IFASD 2022

Conference

Conference19th International Forum on Aeroelasticity and Structural Dynamics, IFASD 2022
Country/TerritorySpain
CityMadrid
Period13/06/2217/06/22

Keywords

  • AePW-3
  • aeroelasticity
  • flutter
  • shock buffet

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Mechanical Engineering

Fingerprint

Dive into the research topics of 'FLUTTER ANALYSIS OF THE BENCHMARK SUPERCRITICAL WING IN THE PRESENCE OF SHOCK BUFFET'. Together they form a unique fingerprint.

Cite this