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Fast and accurate quasi-3D aerodynamic methods for aircraft conceptual design studies (2020)
Journal Article
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

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 o... Read More about Fast and accurate quasi-3D aerodynamic methods for aircraft conceptual design studies.

Design of supercritical low-Reynolds number airfoils for fixed-wing flight on Mars (2020)
Journal Article
Sugar-Gabor, O., & Koreanschi, A. (2020). Design of supercritical low-Reynolds number airfoils for fixed-wing flight on Mars. Journal of Aerospace Engineering, 33(5), https://doi.org/10.1061/%28ASCE%29AS.1943-5525.0001166

Aerodynamic shape optimization for the high-subsonic low-Reynolds number flow regime represents an area of on-going research. The interaction between supercritical compressible flow and laminar boundary layer separation is not well understood due to... Read More about Design of supercritical low-Reynolds number airfoils for fixed-wing flight on Mars.

Optimization and design of an aircraft’s morphing wing-tip demonstrator for drag reduction at low speed, Part I – Aerodynamic optimization using genetic, bee colony and gradient descent algorithms (2017)
Journal Article

In this paper, an ‘in-house’ genetic algorithm is described and applied to an optimization problem for improving the aerodynamic performances of an aircraft wing tip through upper surface morphing. The algorithm’s performances were studied from the c... Read More about Optimization and design of an aircraft’s morphing wing-tip demonstrator for drag reduction at low speed, Part I – Aerodynamic optimization using genetic, bee colony and gradient descent algorithms.

Optimization and design of an aircraft's morphing wing-tip demonstrator for drag reduction at low speeds, Part II - Experimental validation using Infra-Red transition measurement from Wind Tunnel tests (2017)
Journal Article

In the present paper, an ‘in-house’ genetic algorithm was numerically and experimentally validated. The genetic algorithm was applied to an optimization problem for improving the aerodynamic performances of an aircraft wing tip through upper surface... Read More about Optimization and design of an aircraft's morphing wing-tip demonstrator for drag reduction at low speeds, Part II - Experimental validation using Infra-Red transition measurement from Wind Tunnel tests.

Aerodynamic performance improvement of the UAS-S4 Ehecatl morphing airfoil using novel optimization techniques (2016)
Journal Article
Sugar-Gabor, O., Simon, A., Koreanschi, A., & Botez, R. (2016). Aerodynamic performance improvement of the UAS-S4 Ehecatl morphing airfoil using novel optimization techniques. Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 230(7), 1164-1180. https://doi.org/10.1177/0954410015605548

In this paper, we present a morphing wing concept of the airfoil of the S4 unmanned aerial system, the new optimization methodology and the results obtained for multiple flight conditions. The reduction of the airfoil drag coefficient has been achiev... Read More about Aerodynamic performance improvement of the UAS-S4 Ehecatl morphing airfoil using novel optimization techniques.

A new non-linear vortex lattice method : applications to wing aerodynamic optimizations (2016)
Journal Article
Sugar-Gabor, O., Koreanschi, A., & Botez, R. (2016). A new non-linear vortex lattice method : applications to wing aerodynamic optimizations. Chinese Journal of Aeronautics, 29(5), 1178-1195. https://doi.org/10.1016/j.cja.2016.08.001

This paper presents a new non-linear formulation of the classical Vortex Lattice Method (VLM) approach for calculating the aerodynamic properties of lifting surfaces. The method accounts for the effects of viscosity, and due to its low computational... Read More about A new non-linear vortex lattice method : applications to wing aerodynamic optimizations.

Analysis of UAS-S4 Éhecatl aerodynamic performance improvement using several configurations of a morphing wing technology (2016)
Journal Article
Sugar-Gabor, O., Koreanschi, A., & Botez, R. (2016). Analysis of UAS-S4 Éhecatl aerodynamic performance improvement using several configurations of a morphing wing technology. Aeronautical Journal, 120(1231), 1337-1364. https://doi.org/10.1017/aer.2016.61

The paper presents the results of the aerodynamic optimisation of an Unmanned Aerial System's wing using a morphing approach. The shape deformation of the wing is achieved by placing actuator lines at several positions along its span. For each flight... Read More about Analysis of UAS-S4 Éhecatl aerodynamic performance improvement using several configurations of a morphing wing technology.

Improving the UAS-S4 Ehecatl airfoil high angles-of-attack performance characteristics using a morphing wing approach (2016)
Journal Article
Sugar-Gabor, O., Simon, A., Koreanschi, A., & Botez, R. (2016). Improving the UAS-S4 Ehecatl airfoil high angles-of-attack performance characteristics using a morphing wing approach. Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 230(1), 118-131. https://doi.org/10.1177/0954410015587725

In this paper, a morphing wing approach with a new methodology and its results for the high angles-of-attack optimization of the S4 unmanned aerial system airfoil are described. The boundary layer separation delay, coupled with an increase of the max... Read More about Improving the UAS-S4 Ehecatl airfoil high angles-of-attack performance characteristics using a morphing wing approach.

Numerical and experimental validation of a morphed wing geometry using Price-Païdoussis wind-tunnel testing (2016)
Journal Article
Botez, R., Koreanschi, A., & Sugar-Gabor, O. (2016). Numerical and experimental validation of a morphed wing geometry using Price-Païdoussis wind-tunnel testing. Aeronautical Journal, 120(1227), 757-795. https://doi.org/10.1017/aer.2016.30

An experimental validation of an optimised wing geometry in the Price-Païdoussis subsonic wind tunnel is presented. Two wing models were manufactured using optimised glass fibre composite and tested at three speeds and various angle-of-attack. These... Read More about Numerical and experimental validation of a morphed wing geometry using Price-Païdoussis wind-tunnel testing.