Fast and accurate quasi-3D aerodynamic methods for aircraft conceptual design studies

Sugar-Gabor, O; Koreanschi, A

Abstract

In this paper, recent developments in quasi-3D aerodynamic methods are presented. At their
core, these methods are based on the Lifting-Line Theory and Vortex Lattice Method, but with
a relaxed set of hypotheses, while also considering the effect of viscosity (to a certain degree)
by introducing a strong non-linear coupling with two-dimensional viscous aerofoil
aerodynamics. These methods can provide more accurate results compared to their inviscid
classical counterparts and have an extended range of applicability with respect to the lifting
surface geometry. Verification results are presented for both steady-state and unsteady flows,
as well as case studies related to their integration into aerodynamic shape optimisation tools.
The good accuracy achieved for relatively low computational time requirement makes quasi3D methods a solid choice for conducting conceptual level design and optimisation of lifting
surfaces.

Citation

Sugar-Gabor, O., & Koreanschi, A. (2021). Fast and accurate quasi-3D aerodynamic methods for aircraft conceptual design studies. Aeronautical Journal, 125(1286), 593-617. https://doi.org/10.1017/aer.2020.128

• Journal Article Type: Article
• Acceptance Date: Nov 4, 2020
• Online Publication Date: Dec 2, 2020
• Publication Date: Apr 1, 2021
• Deposit Date: Nov 9, 2020
• Publicly Available Date: Jun 2, 2021
• Journal: The Aeronautical Journal
• Print ISSN: 0001-9240
• Electronic ISSN: 2059-6464
• Publisher: Cambridge University Press (CUP)
• Volume: 125
• Issue: 1286
• Pages: 593-617
• DOI: https://doi.org/10.1017/aer.2020.128
• Publisher URL: https://doi.org/10.1017/aer.2020.128
• Related Public URLs: http://journals.cambridge.org/action/displayMoreInfo?jid=AER