Searched for: faculty:"Aerospace%5C%2BEngineering"
(1 - 18 of 18)
document
Westerveld, D. (author)
Aircraft wings are becoming more flexible, making it important to take this flexibility into account from the start of the design process. With flexible wings, unsteady (time-varying) aerodynamics becomes important. For this reason, an unsteady aerodynamics model was constructed and coupled to an aeroelastic flight mechanics tool. This allows...
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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Janssen, M. (author)
This thesis was conducted at KVE Composites Group (The Hague, The Netherlands). The aim of this thesis is to create an aeroelastic model that can be used during the design phase of these rotor blade projects. An aeroelastic was created consisting of a Ritz-Hamilton structural model, a lifting line quasi steady aerodynamic model with two inflow...
master thesis 2015
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Hertgers, S.W. (author)
In aeroelastic research the interaction between the structural wing and the aerodynamics is investigated. Currently the wingbox structures, as other components, are manufactured out of composite materials to replace the metallic airplanes. Composites have the ability to be designed by defining the orientation and thickness of a laminate. This...
master thesis 2015
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Bernhammer, L.O. (author)
Wind turbines convert kinetic energy of the wind into electrical energy. Unfortunately, this process is everything but constant, as the wind source shows large fluctuations with high and low frequencies. This turbulence, together with the wind shear and yawed inflow, excites the turbine structure, thereby driving the loads and the design of...
doctoral thesis 2015
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Tal, E.A. (author)
Recent developments in airframe design include the increasing application of modern lightweight materials. Airframe designs based on composite materials are able to provide sufficient structural strength at lower mass, but often have decreased structural rigidity. Flight vehicles with relatively flexible structures exhibit more prominent...
master thesis 2015
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Werter, N.P.M. (author), De Breuker, R. (author)
Driven by a need to improve the efficiency of aircraft and reduce the fuel consumption, composite materials are applied extensively in the design of aircraft. A dynamic aeroelastic framework for the conceptual design of a generic composite wing structure is presented. The wing is discretized in several spanwise sections, where each section has a...
conference paper 2015
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Werter, N.P.M. (author), Sodja, J. (author), De Breuker, R. (author)
The design methodology and testing of an aeroelastically tailored wing subjected to manoeuvre loads is presented in this paper. The wing is designed using an aeroelastic analysis tool that is composed of a closely coupled nonlinear beam model and a vortex lattice aerodynamic model. The globally convergent method of moving asymptotes is used to...
conference paper 2015
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Kalthof, R.L.C. (author)
Because of the focus on weight minimization, aircraft are becoming more and more flexible. Therefore, the frequency separation between flight mechanics motion and structural vibration decreases. This calls for a flight mechanics model that includes aeroelasticity. The development of such a model was the subject of the current research. This...
master thesis 2014
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Thuwis, G.A.A. (author)
doctoral thesis 2012
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Barlas, A. (author)
This thesis investigates particular concepts and technologies that can alleviate fatigue loads on wind turbines by using distributed active aerodynamic devices on the blades, a concept briefly referred to as `smart blades'. Firstly, published research work on smart control devices is reviewed, and the pros and cons for the application on wind...
doctoral thesis 2011
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De Breuker, R. (author)
Morphing aircraft can change their shape radically when confronted with a variety of conflicting flight conditions throughout their mission. For instance the F-14 Tomcat fighter aircraft, known from the movie Top Gun, was able to sweep its wings from a straight wing configuration to a highly swept version. Such concepts, which are basically...
doctoral thesis 2011
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Witteveen, J.A.S. (author), Bijl, H. (author)
An efficient uncertainty quantification method for unsteady problems is presented in order to achieve a constant accuracy in time for a constant number of samples. The approach is applied to the aeroelastic problems of a transonic airfoil flutter system and the AGARD 445.6 wing benchmark with uncertainties in the flow and the structure.
conference paper 2009
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Holierhoek, J.G. (author)
doctoral thesis 2008
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Reijerkerk, M.J. (author)
Numerical computational methods are getting more and more sophisticated every day, enabling more accurate aircraft load predictions. In the structural design of aircraft higher levels of flexibility can be tolerated to arrive at a substantial weight reduction. The result is that aircraft of the future can be bigger, have better performance and...
doctoral thesis 2008
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Looye, G.H.N. (author)
The design of flight control laws (FCLs) for automatic and manual (augmented) control of aircraft is a complicated task. FCLs have to fulfil large amounts of performance criteria and must work reliably in all flight conditions, for all aircraft configurations, and in adverse weather conditions. Consequently, a large part of the FCL design...
doctoral thesis 2008
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Lisandrin, P. (author)
doctoral thesis 2007
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Prananta, B.B. (author)
doctoral thesis 1999
Searched for: faculty:"Aerospace%5C%2BEngineering"
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