Searched for: subject:"unsteady%5C+aerodynamics"
(1 - 12 of 12)
document
Werter, N.P.M. (author)
In order to accommodate the growth in air traffic whilst reducing the impact on the environment, operational efficiency is becoming more and more important in the design of the aircraft of the future. A possible approach to increase the operational efficiency of aircraft wings is the use of aeroelastic tailoring, by taking advantage of the...
doctoral thesis 2017
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van Rooij, A.C.L.M. (author)
Aerodynamic non-linearities, such as shock waves, boundary layer separation or boundary layer transition, may cause an amplitude limitation of the oscillations induced by the fluid flow around a structure. These aeroelastic limit-cycle oscillations (LCOs) resulting from aerodynamic non-linearities have been studied numerically in this PhD thesis...
doctoral thesis 2017
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Lancelot, P.M.G.J. (author), Sodja, J. (author), De Breuker, R. (author)
A detailed performance investigation of the gust generator built for the Open Jet Facility wind tunnel at TU Delft is summarised in this paper. The influence of various parameters such as reduced frequency, measurement location, and excitation amplitude on the generated gust profile was quantified. In addition, unsteady lift measurements were...
conference paper 2017
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van de Meerendonk, R. (author), Perçin, M. (author), van Oudheusden, B.W. (author)
This study explores the flow field and fluid-dynamic loads generated by revolving low-aspect-ratio flat plate wings undergoing a revolving motion starting from rest. Three wings with different degree of chordwise flexural stiffness (i.e., rigid, moderate flexibility and high flexibility) have been tested in order to investigate the influence of...
conference paper 2016
document
Percin, M. (author)
The growing need for mobile aerial platforms capable of performing reconnaissance tasks and gathering intelligence in hazardous and physically inaccessible areas has given rise to an increasing interest in the development of micro aerial vehicles (MAVs), in view of their potential capabilities of versatile and highly maneuverable flight....
doctoral thesis 2015
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Werter, N.P.M. (author), De Breuker, R. (author), Abdalla, M.M. (author)
Over the years, wings have become lighter and more flexible, making them more prone to aeroelastic effects. Thus, aeroelasticity in design becomes more important. In order to determine the response of an aircraft to, for example, a gust, an unsteady aerodynamic model is required to determine the dynamic loads. The three most-commonly used...
conference paper 2015
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Van Staveren, W.H.J.J. (author)
The response of aircraft to stochastic atmospheric turbulence plays an important role in aircraft-design (load calculations), Flight Control System (FCS) design and flight-simulation (handling qualities research and pilot training). In order to simulate these aircraft responses, an accurate mathematical model is required. Two classical models...
doctoral thesis 2003
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den Boer, R.G. (author)
A new postprocessing procedure is applied on the data, acquired in 1981 during the unsteady transonic pressure measurements on a transport-type supercritical wing (LANN-model), oscillating in pitch. The new procedure takes the influence into account of the local boundary layer on the dynamic response of the pressure tubes. This report presents...
report 1989
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Roos, R. (author), Zwaan, R.J. (author)
report 1974
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Tijdeman, H. (author), Schippers, P. (author)
report 1973
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Tijdeman, H. (author), Zwaan, R.J. (author)
Possibilities to develop calculation methods for oscillating wings in transonic flow are discussed. Special attention is given to the question of linearisation. Recent NLR results of pressure measurements on an aerofoil with flap in transonic flow are analysed. Correlations are made between steady, quasi-steady and unsteady results. Shock motion...
report 1973
document
Tijdeman, H. (author), Bergh, H. (author)
An experimental investigation has been performed, which revealed a considerable difference between the dynamic response characteristics of a tube-trauisducer system with the entrance in still air and one having an airflow across the entrance orifice, The differences observed could be explained theoretically by modifyink the existing calculation...
report 1972
Searched for: subject:"unsteady%5C+aerodynamics"
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