Influence of Transonic Flutter on the Conceptual Design of Next-Generation Transport Aircraft
Name
Opgenoord-Drela-Willcox-2019-Influence-Transonic-Flutter-1.pdf
Description
Accepted version
Size
854.55 KB
Format
Adobe PDF
Checksum (MD5)
2009772291818da92d78dde346eab099
Author(s)
Opgenoord, Max MJ
Drela, Mark
Willcox, Karen E
Date Issued
2019
Journal
AIAA Journal
Publisher
American Institute of Aeronautics and Astronautics (AIAA)
Version
Author's final manuscript
Abstract
© 2019 by Max Opgenoord, Mark Drela, and Karen Willcox. Transonic aeroelasticity is an important consideration in the conceptual design of next-generation aircraft configurations. This paper develops a low-order physics-based flutter model for swept high-aspect-ratio wings. The approach builds upon a previously developed flutter model that uses the flowfield's lowest moments of vorticity and volume-source density perturbations as its states. The contribution of this paper is a new formulation of the model for swept high-aspect-ratio wings. The aerodynamic model is calibrated using offline two-dimensional unsteady transonic computational-fluid-dynamics simulations. Combining that aerodynamic model with a beam model results in a low-dimensional overall aeroelastic system. The low computational cost of the model permits its incorporation in a conceptual design tool for next-generation transport aircraft. The model's capabilities are demonstrated by finding transonic flutter boundaries for different clamped-wing configurations and investigating the influence of transonic flutter on the planform design of next-generation transport aircraft.
MIT Department
Massachusetts Institute of Technology. Department of Aeronautics and Astronautics
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.2514/1.J057302
