Searched for: contributor%3A%22De+Breuker%2C+R.+%28mentor%29%22
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Carrillo Córcoles, Xavier (author)
The flared folding wingtip (FFWT) is a concept presented by Airbus to increase the aerodynamic efficiency and provide a means of load alleviation. A gate-to-gate demonstration of this concept has already been presented with the AlbatrossONE, a scaled aircraft featuring the FFWT concept. In this demonstration, the aircraft fold the wingtips...
master thesis 2022
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Srikanth Vasudevan, Srikanth (author)
High Altitude Long Endurance (HALE) configurations have gained much popularity in the recent past. Although, HALE aircraft enable efficient and environmental-friendly flying, they necessitate a large Aspect-Ratio wing. These slender structures are prone to large, non-linear deformations which further increase the unsteady nature of aerodynamic...
master thesis 2021
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Pruijsers, Tom (author)
This work is a part of the Automated Rotor Blade Inspection (ARBI) project. ARBI aims to improve the rotorcraft RTB process with novel rotor blade measurement equipment such as 3D scanning, thermography and shearography. The research aims to quantify the effects of changes in blade properties on rotor vibration levels for CH-47 Chinook. This is...
master thesis 2021
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Thakrar, Nisarg (author)
This thesis embarked upon establishing and validating a design process to build and control a distributed TRIC concept seamless smart morphing wing to achieve simultaneous load alleviation, flutter suppression and drag minimization capabilities. A novel aeroelastic simulation tool was built to carry out composite wing skin optimization, with...
master thesis 2020
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Deshmukh, Piyush (author)
With the focus on the reduction of fossil fuel emissions, aircraft are continuously growing towards higher fuel efficiency. The traditional limits of aircraft performance can be surpassed through the use of composite materials which offer a reduction in aircraft weight. Due to the multidisciplinary nature of aircraft design, integration of...
master thesis 2020
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Geertsen, Jan Andreas (author)
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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Sousa Vicente, Frederico (author)
Multi-step optimization of large composite structures involves formulating the stiffness distribution in terms of lamination parameters that provide a continuous design space, followed by a second optimization in the discrete design space to obtain equivalent stacking sequences. The retrieval of stacking sequences is often challenging as a...
master thesis 2019
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Cancino Queirolo, Mauricio Andrés (author)
Morphing winglets are devices that can improve aircraft aerodynamic efficiency and also be used as load alleviation devices. However, this implementation comes with a weight penalty due to the morphing mechanisms. In the present study two morphing winglet cases are tested, where due to mechanisms compatibilities, only a variable Cant-Span...
master thesis 2018
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van Zanten, Floris-Jan (author)
An approach to optimizing variable stiffness laminates for strength is modified to allow for the optimization of curved structures. A density function to take in account the effect of gaps and overlaps during optimization created by fibre steering is found with the functional approximation method. The density plot of a plate for 2 standard cases...
master thesis 2018
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Bussemaker, Jasper (author)
Improving the performance of large transport aircraft requires high aspect ratio and lightweight wings, making aeroelasticity an important factor in wing structural design. Active control of aeroelastic loads can be used to improve the aeroelastic behavior of the wing.<br/><br/>Two active load control techniques are considered: Maneuver Load...
master thesis 2018
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Sinha, Kautuk (author)
A common structural design verification is to conduct modal analysis and to ensure that the vibration modes of the structure do not get harmonically excited during operation. Since the modal frequencies are dependent on the mass and stiffness properties of the structure, they are an influencing factor in the design optimization. Modal...
master thesis 2017
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Ran, J. (author)
Strut-braced wing aircraft are believed to have great potential for the future of large passenger air transport with regard to fuel burn reductions due to the combination of high structural and aerodynamic efficiency. Strut-braced wings deviate from conventional wings in the fact that they employ additional bracing at certain span location away...
master thesis 2017
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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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de Vries, R. (author)
The general trend in the aerospace industry is to optimise lightweight and highly flexible wing structures made of composite materials. This flexibility gives rise to static and dynamic aeroelastic instability problems. Research by Kim and Lee, Murua et al., and Drazumeric et al. have proven that chord-wise flexibility has a significant effect...
master thesis 2016
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Niessink, M.J. (author)
Key technological challenges within the field of aeronautical engineering drive the design of wings to become increasingly lighter and more flexible. The added flexibility increases the influence of aeroelastic effects, which need to be incorporated in the preliminary design phase. To this end an aeroelastic tailoring tool for composite wing...
master thesis 2016
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Ratan Parkhe, K.K. (author)
The importance of aeroelastic tailoring is increasing continuously as the aircraft wings become more and more flexible. Incorporating aeroelastic considerations in the early part of the design process has a lot of benefits. But these require significant computational resources if accurate predictions are needed. This is more relevant these days...
master thesis 2016
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Poryzala, T. (author)
The goal of this thesis is to design, analyze, manufacture, and test a mechanical passive pitch mechanism for a small horizontal axis wind turbine. Several pitching concepts were investigated in the wind industry and related fields before ultimately deciding on a centrifugal governor design concept in a pitch-to-stall configuration. Inertial and...
master thesis 2016
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De Jong, T.A. (author)
Topology optimization is the process of optimizing both the material layout and the connectivity inside a design domain. The first paper on topology optimization dates back to 1904, when the Australian inventor Michell derived optimality criteria for minimum weight truss structures. In 1988 Bendsøe and Kikuchi published the pioneering paper ...
master thesis 2016
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Natella, M. (author)
The present work thus develops a low-fidelity formulation to investigate the flight dynamic stability of a flexible wing structure. The model is verified against other studies found in the relevant literature, which show interesting trends in terms of how some of the design variables or flight conditions influence the stability of the structure.
master thesis 2015
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