Published in Frontiers in Built Environment
Span-wire traffic signals are vulnerable to extreme wind events such as hurricanes and thunderstorms. In past events in the Southeastern Coast of the United States, many failures of span-wire traffic signals were reported. In order to identify their dynamic behavior during extreme wind events and investigate their buffeting response, a large-scale ...
Accurate and efficient aeroelastic models are critically important for enabling the optimization and control of highly flexible aerospace structures, which are expected to become pervasive in future transportation and energy systems. Advanced materials and morphing wing technologies are resulting in next-generation aeroelastic systems that are char...
Electrification of aviation is driving new aircraft configurations consisting in slender, lighter wings with several propellers spread across the wing span, including the wing tips. Thinner wings with high aspect ratios tend to be more flexible, and thus, more susceptible to wing flutter, a dynamic aeroelastic instability characterised by diverging...
A novel approach is proposed to reduce, compared with the conventional binning approach, the large number of aeroelastic code evaluations that are necessary to obtain equivalent loads acting on wind turbines. These loads describe the effect of long-term environmental variability on the fatigue loads of a horizontal-axis wind turbine. In particular,...
The design process for new aircraft configurations is complex, very costly and many disciplines are involved, like aerodynamics, structure, loads analysis, aeroelasticity, flight mechanics and weights. Their task is to substantiate the selected design, based on physically meaningful simulations and analyses. Modifications are much more costly at a ...
This article aims to indicate the differences between rigid and flexible wing aircraft flying (FQ) and handling (HQ) qualities. The Simulation Framework for Flexible Aircraft was used to provide a generic cockpit environment and a piloted mathematical model of a bare airframe generic high aspect ratio wing aircraft (GA) model. Three highly qualifie...
Downwind wind turbine blades are subjected to tower wake forcing at every rotation, which can lead to structural fatigue. Accurate characterisation of the unsteady aeroelastic forces in the blade design phase requires detailed representation of the aerodynamics, leading to computationally expensive simulation codes, which lead to intractable uncert...
The numerical prediction of aeroelastic systems responses becomes unaffordable when parametric analyses with high-fidelity CFD are required. Reduced order modeling (ROM) methods have therefore been developed in view of reducing the costs of the numerical simulations while preserving a high level of accuracy.The present thesis focuses on the family ...
Some classes of aircraft are characterized by highly flexible wings undergoing large structural deformations in steady and maneuvering flight. In most cases this flexibility is the result of a high aspect ratio, which is in turn forced by dedicated design criteria such as the reduction of the induced drag. Prominent examples for such configurations...
Aircraft endurance, which is the maximal duration of a flight, is a key feature of an heavier-than-air. Since the invention of photovoltaic cells and their first use on aircraft, the idea of a virtually infinite endurance, only restrained by maintenance issues, gain ground in the aviation community. This idea, materialised in the High Altitude Pseu...
