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Vorobyov, A.V. (author), Bagga, S. (author), Yarovoy, A.G. (author), Haddad, S.A.P. (author), Serdijn, W.A. (author), Long, J.R. (author), Irahhauten, Z. (author), Ligthart, L.P. (author)For impulse radio ultrawideband communications an “antenna plus generator” system is co-designed and an on chip generator is integrated into the antenna. This approach does away with the need for intermediate transmission lines conventionally placed between an RF device/generator and an antenna and therefore eliminates the need for a balun,...journal article
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Stahlie, T.J. (author)The numerical integration of a non-linear function f(a (t), ap(t),.. a (t)) vith mutually independent variaties a, is considered for the case that the initial conditions for the integration process and time series of a, are determined by experiment. In order to minimize the error in the result of the integration process a technique is developed...report 1974
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- Wesseling, P. (author) journal article 1975
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Snel, H. (author)A model is derived for the calculation of the properties of a jet exhausting into a non-uniform main flow, at an arbitrary angle to the initial jet direction. The model is a generalisation of an earlier jet-ina-main flow model for uniform main flows. Semi empirical input is limited to an entrainment relation and a relation for form factors of...report 1975
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Lindhout, J.P.F. (author), van den Berg, B. (author), Elsenaar, A. (author)At the workshop nine participants presented the results of their calculations for a practical test case. The test case deals with the 3D turbulent boundary layer development, including separation, on the root section of a swept wing. The employed calculation methods comprise 3D integral methods as well as field methods. A short description of...report 1981
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Doornbos, G. (author), de Wolf, W.B. (author)A wind tunnel test procedure is described to determine from the thrust minus drag measurements the aircraft drag and engine/airframe interference drag at cruise conditions. The definitions of the thrust and drag terms in use are given. Engine thrust simulation is provided by a calibrated Turbofan Powered Simulator (TPS). Further the use of a...report 1982
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Dekker, G.J. (author)Modern commercial transport aircraft contain digital avionics systems for more and more safety critical functions. The reliability and safety of those new systems depend on the hardware reliability and on the reliability of the embedded software. In this report, an overview is given of available methods and techniques to develop reliable...report 1982
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- Fokkema, J.T. (author), Van Leuken, T.G.R. (author) conference paper 1983
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- Annevelink, J. (author), Dewilde, P. (author), Fokkema, J.T. (author) conference paper 1983
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van Leeuwen, H.P. (author)The literature concerning the application of fracture mechanics to the growth of creep cracks is discussed. As an introduction it is shown that linear elastic fracture mechanics have been applied successfully to the residual strength of brittle materials crack growth due to stress corrosion and crack growth due to fatigue. Next the methods are...report 1983
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- Koudstaal, R. (author) report 1985
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- Baarse, G. (author) report 1985
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- Schuitman, A. (author) doctoral thesis 1985
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Hounjet, M.H.L. (author)A new method ARNSPNS is described for the calculation of steady and time-linearized unsteady incompressible potential flow about arbitrary lifting and nonlifting bodies in an arbitrary mean steady flow field, including rotation. The method belongs to the category of the so-called panel methods. Applications have been made to wind turbines...report 1985
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Ribberink, J.S. (author)It is the aim of this note to give a simple introduction to the method as used by Galappatti (1983) to derive a depth-integrated model for suspended transport. Contrary to other depth-integrated models (see e.g. Latteux and Teisson, 1985) this model is directly based on the 2D convection-diffusion equation (see e.g. de Vries, 1981) including the...report 1986
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Hounjet, M.H.L. (author)A new method ARSPSC is described for the calculation of steady and time-linearized unsteady subsonic potential flow about complex 2-D and 3-D configurations. The method belongs to the category of the so-called panel methods. Applications have been made to a 2-D oscillating flat plate, a 2-D multi-component airfoil with oscillating flap and a 3-D...report 1986
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Brakman, C.M. (author)Integrals of the type indicated can be evaluated using the Fourier-series development of the Jacobi-polynomials. An alternative procedure is given yielding an analytical expression in terms of l, m and n.journal article 1987
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- De Borst, R. (author) journal article 1987
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Hounjet, M.H.L. (author)A description is given of the method CAR88 for the calculation of steady and time-linearized unsteady subsonic and supersonic flow about complex 2-D and 3-D configurations. The method belongs to the category of the socalled panel methods. Results of applications in supersonic flow are shown which have been made to a 2-D oscillating flat plate, a...report 1988
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Noback, R. (author)A method is described to generate a random Gaussian process with a power spectrum with fractional power, for example the von Karman spectrum for atmospheric turbulence. The method uses digital filtering of a white noise process and it is based on the use of fractional derivatives. An algorithm to generate the process is presented.report 1988