Poplingher, L., Mallik, W. and Raveh, D. E. (2022) Flutter Analysis of the Benchmark Supercritical Wing at Moderate Angles of Attack. In: AIAA SCITECH 2022 Forum, San Diego, CA & Virtual, 3-7 January 2022, ISBN 9781624106316 (doi: 10.2514/6.2022-2316)
Full text not currently available from Enlighten.
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 plunge 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 threefold: 1) Predicting flutter in a computationally efficient manner by fitting a linear dynamic model to responses at pre-flutter conditions and extrapolating a stability parameter, 2) Studying the angle of attack effect on flutter onset and mechanism at this transonic Mach number, and 3) Studying the possible relation between shock buffet and flutter, and the fluid-structure interaction mechanism. 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.
| Item Type: | Conference Proceedings |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Mallik, Dr Wrik |
| Authors: | Poplingher, L., Mallik, W., and Raveh, D. E. |
| College/School: | College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity |
| ISBN: | 9781624106316 |
| Published Online: | 29 December 2021 |
| Related URLs: |
University Staff: Request a correction | Enlighten Editors: Update this record
Deposit and Record Details
Deposit and Record Details