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Active flux scheme for time-dependent, viscous, compressible flows (2022)
Presentation / Conference
Sugar-Gabor, O. (2022, October). Active flux scheme for time-dependent, viscous, compressible flows. Presented at International Conference of Aerospace Sciences AEROSPATIAL 2022, INCAS, Bucharest, Romania

The Active Flux scheme is a Finite Volume scheme with additional degrees of freedom on the cell boundaries. These additional nodes allow for third-order accuracy to be achieved, though extensions to higher orders are also possible. Unlike Godunov-t... Read More about Active flux scheme for time-dependent, viscous, compressible flows.

Non-intrusive reduced-order model for unsteady fluid flow and fluid-structure interaction problems (2022)
Presentation / Conference
Sugar-Gabor, O., & Fairchild, D. (2022, October). Non-intrusive reduced-order model for unsteady fluid flow and fluid-structure interaction problems. Presented at International Conference of Aerospace Sciences AEROSPATIAL 2022, INCAS, Bucharest, Romania

A non-intrusive reduced-order model applicable to time-dependent parametric systems is developed. The model is based on extracting a reduced-order basis from high-order snapshots via proper orthogonal decomposition. Multi-layered feedforward artifi... Read More about Non-intrusive reduced-order model for unsteady fluid flow and fluid-structure interaction problems.

Nonlinear lifting-line model using a vector formulation of the unsteady Kutta-Joukowski theorem (2018)
Presentation / Conference
Sugar-Gabor, O. (2018, October). Nonlinear lifting-line model using a vector formulation of the unsteady Kutta-Joukowski theorem. Presented at Aerospatial 2018 : International Conference of Aerospace Sciences, Bucharest, Romania

In this paper, a vector form of the unsteady Kutta-Joukowski theorem is derived and then used in the formulation of a general Lifting-Line Model capable of analysing a wide range of engineering problems of interest. The model is applicable to investi... Read More about Nonlinear lifting-line model using a vector formulation of the unsteady Kutta-Joukowski theorem.

Unsteady nonlinear lifting line model for applied aerodynamics studies (2018)
Presentation / Conference
Sugar-Gabor, O. (2018, May). Unsteady nonlinear lifting line model for applied aerodynamics studies. Presented at Advances in Aerospace Structures, Systems and Technology (AASST 2018), London, UK

The lifting line theory is widely used for obtaining aerodynamic performance results in various engineering fields, from aircraft conceptual design to wind power generation. Many different models were proposed, each tailored for a specific purpose, t... Read More about Unsteady nonlinear lifting line model for applied aerodynamics studies.

Morphing wing application on Hydra Technologies UAS-S4 (2017)
Presentation / Conference
Segui, M., Sugar-Gabor, O., Koreanschi, A., & Botez, R. (2017, February). Morphing wing application on Hydra Technologies UAS-S4. Presented at IASTED Modelling, Identification and Control 2017 Conference, Innsbruck, Austria

This paper presents the aerodynamic results of a morphing wing study performed on the UAS S4 Éhecatl from Hydra Technologies. Only the cruise phase of the aircraft was considered (constant altitude and constant speed). The difference, from an aerodyn... Read More about Morphing wing application on Hydra Technologies UAS-S4.

New methodology for longitudinal flight dynamics modelling of the UAS-S4 Ehecatl towards its aerodynamics estimation modelling (2017)
Presentation / Conference
Kuitche, M., Segui, M., Botez, R., Sugar-Gabor, O., & Ghazi, G. (2017, January). New methodology for longitudinal flight dynamics modelling of the UAS-S4 Ehecatl towards its aerodynamics estimation modelling. Presented at AIAA Modeling and Simulation Technologies Conference, AIAA SciTech Forum 2017, Grapevine, Texas, USA

Unmanned Aerial Vehicle modelling has found diverse utilities in both civil and military applications. In order to develop an accurate model of their flight dynamics, it is important to properly estimate their aerodynamics coefficients. For this pu... Read More about New methodology for longitudinal flight dynamics modelling of the UAS-S4 Ehecatl towards its aerodynamics estimation modelling.

Numerical optimization of the UAS-S4 Éhecatl airfoil using a morphing wing approach (2014)
Presentation / Conference
Sugar-Gabor, O., Simon, A., Koreanschi, A., & Botez, R. (2014, June). Numerical optimization of the UAS-S4 Éhecatl airfoil using a morphing wing approach. Presented at 32nd AIAA Applied Aerodynamics Conference, AIAA AVIATION Forum, Atalnta, Georgia, USA

In this paper, we describe the new methodology and the results obtained for multiple flight conditions optimization of the airfoil of the S4 unmanned aerial system, using a morphing wing approach. The goal of reducing the airfoil drag coefficient ove... Read More about Numerical optimization of the UAS-S4 Éhecatl airfoil using a morphing wing approach.