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Rotundo, Carlo (author)
The ever-growing aerospace industry's urgent need to reduce greenhouse gas emissions has ignited a surge of interest in hybrid or fully electric propulsion systems. The electrification of aircraft introduces the possibility for energy to be recovered during phases of flight where no power input is required, and previous research has demonstrated...
master thesis 2023
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Gajjar, Kishan (author)
As wind turbines get bigger and bigger, the simulation of wind turbines becomes more complex. The increase in size brings about a multitude of intricate challenges that must be addressed in the simulation process. These challenges lie in the different aspects of the simulations such as aerodynamics, structural dynamics, power electronics,...
master thesis 2023
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de Boer, Stefan (author)
The flight tests which are part of the certification procedure that prove that no flutter occurs within the flight envelope are fraught with risk. To reduce the risk, numerous numerical analyses, wind tunnel and ground tests are performed, which together with the flight tests result in a long and costly test programme.<br/><br/>To reduce the...
master thesis 2023
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Castillo Capponi, Diego (author)
In the last few years, a new aircraft configuration has been developed: the electric Vertical Take-off/Landing aircraft (eVTOL). To improve aircraft efficiency, structures are lighter and more flexible. Due to the structure's flexible nature and the use of propellers for propulsion, eVTOL are prone to whirl flutter, which consists of a dynamic...
master thesis 2022
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Costa Fernandez, José Luis (author)
The technical advancements achieved during the last decade have permitted the implementation of low-fidelity numerical methods to analyze simplified aeroelastic problems. However, the available computational power is still incapable of dealing with more realistic events involving complex structural dynamics and flow regimes. For this reason,...
master thesis 2022
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Poland, Jelle (author)
Several structural models that could serve as building blocks for a next-generation FSI-based kite design tool have been developed. The models represent the leading-edge inflatable V3 soft wing membrane kite of Kitepower B.V., by using a wireframe multi-plate representation. Where the shape deformations are calculated using bridle line system...
master thesis 2022
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Eppenga, Kevin (author)
In previous research, the necessity of non-rigid body simulators was stated to be a requirement for long, slender bodies. However, it remains unclear for which vehicle design parameters non-rigid body effects become destabilising. A set of 2+N linearly independent equations of motions can be combined in a single matrix to determine the motion of...
master thesis 2021
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Alen, Louis (author)
In order to assess the span-wise load distribution in an aeroelastic gust encounter, a novel method is developed which makes use of marker-based optical tracking. This allows for the prediction of the elastic force and the computation of the inertial force such that Collar's triangle may be quantified during the encounter through an iFEM...
master thesis 2021
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Christison Gray, Alasdair (author)
In the past decade, MDO researchers have developed capabilities to simultaneously optimise the shape and internal structure of aircraft based on coupled high fidelity Computational Fluid Dynamics and Finite Element Analysis. However, to date the finite element methods used for the structural analysis are typically linear and are known to be...
master thesis 2020
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Prins, Christel (author)
Classical aerodynamic wind tunnel tests are performed with stiff or rigid wind tunnel models. Over the years wing structures have become more flexible, and with the rise of non-conventional designs, such as strut-braced wings featuring high aspect ratios, even more flexible designs have risen. To capture the aerodynamic performance of these...
master thesis 2020
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Boatto, Umberto (author)
Accurate aerodynamic and aeroacoustic simulations of helicopters and wind turbines require the inclusion of the blade elasticity into the computational setup. If low-order aerodynamic models can be efficient for optimization purposes, they are often insufficient in predicting the complex flow phenomena responsible for structural vibrations and...
master thesis 2020
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Mitrotta, F.M.A. (author)
The reduction of atmospheric pollutants emission is one of the biggest challenges of modern aeronautical industry. This is testified by the commitment of international institutions such as the European Commission, with its \textit{Flightpath 2050} document issued in 2011, and by research organization such as NASA, with its \textit{Fixed Wing}...
master thesis 2020
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Abdul Rozak Rivai Fassah, Abdul (author)
In recent years, developments in the field of aerospace materials and structures has been bringing major breakthroughs in the construction of air vehicles to be more lightweight yet with higher strength. However, the aircraft body can deform more appreciably due to the occurrence of flow separation and flutter. Therefore, active control is...
master thesis 2019
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Rietema, Roald (author)
Recent decades, an ongoing trend has emerged in the upscaling of wind turbines in order to compete with traditional energy resources. For conventional wind turbines, aside from improving safety, the driving factors for new designs have always been increased efficiency and performance. This has led to novel wind turbine designs comprising thin...
master thesis 2019
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Isacco, Roberto (author)
Fundamental phase in the preliminary design of an aircraft is the load case choice. Historically, the manoeuvres have been considered as the principal critical loads, while in conceptual design the gusts have been not investigated since, being an intrinsically dynamic phenomenon, they are expensive to analyze. Nevertheless, they are a critical...
master thesis 2019
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Anand, Himanshu (author)
Recent decades have seen the range of applications for aircraft expand to niches like weather monitoring, reconnaissance and satellite launch (Air Launch to Orbit, ALO). The requirements for such roles necessitate unconventional features like twin fuselages (in case of ALO mother ships) and very high aspect ratio wings (for long endurance...
master thesis 2019
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Mangat, Naunidh (author)
Wind energy has emerged as a promising alternative to fossil fuel energy sources over the last two decades partly due to considerable reductions in the cost of power production. A common trend towards cost reduction has been to build larger and lighter wind turbines. These produce more power per unit and use less material. Another strategy for...
master thesis 2019
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Verdonck, Hendrik (author)
Aircraft manufacturers have to prove a flutter free design for all operational cases within the complete flight envelope plus a safety margin. This certification process relies on validated flutter computations which have to be made for all flight conditions including variations in the aircraft's loading and failure cases. The aerodynamic...
master thesis 2019
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Lonsain, J. (author)
Aeroelastic analyses traditionally consider the airfoil of a wing to remain rigid, only allowing deformation in the span-wise direction of the wing. Recent investigations have shown the benefits of adding chord-wise flexibility in the trailing edge of a wing, however so far only two-dimensional studies have been carried out. Therefore, the...
master thesis 2017
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Van Dooren, R.M. (author)
master thesis 2016
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