Searched for: mods_originInfo_publisher_s:"American%5C+Institute%5C+of%5C+Aeronautics%5C+and%5C+Astronautics%5C+%5C%28AIAA%5C%29"
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Hoogreef, M.F.M. (author), La Rocca, G. (author)
Multidisciplinary Design Optimization (MDO) can aid designers to improve already mature design solutions, as well as to explore innovative, complex engineering products. It is a methodology, complete with mathematical formulations, that assists in the optimization of a complex product, whilst considering and exploiting discipline interactions....
conference paper 2015
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Vos, R. (author), Hoogreef, M.F.M. (author)
This paper presents a semi-analytical method for the weight estimation of fuselages with an oval cross-section, applied to blended wing body aircraft. The weight estimation of the fuselage primary structure is based on a structural analysis of two-dimensional crosssections and it is completed by a set of empirical relations for the weight...
conference paper 2013
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Yu, H. (author), Mulder, J.A. (author)
This work concentrates on the development of an optimization technique which is capable of minimizing the noise impact of an arriving aircraft by optimizing its flight trajectory. Actions needed from pilots to gradually establish the landing configuration are considered because it is expected that the pilot workload throughout this phase should...
conference paper 2012
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Percin, M. (author), Eisma, H.E. (author), Van Oudheusden, B.W. (author), Remes, B. (author), Ruijsink, R. (author), De Wagter, C. (author)
Time-resolved velocity field measurements in the wake of the flapping wings of the DelFly II Micro Aerial Vehicle (MAV) in forward flight configuration were obtained by Stereoscopic Particle Image Velocimetry (Stereo-PIV). The PIV measurements were performed at several spanwise planes in the wake of the flapping wings and at a high framing rate...
conference paper 2012
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Vandenheede, R.B.R. (author), Bernal, L.P. (author), Morrison, C.L. (author), Humbert, S. (author)
An experimental investigation of the parameter space of biologically inspired hover kinematics for flapping wings is conducted. The present research continues earlier work conducte at a Reynolds number of 4.8 x 10^3 and with a reduced frequency of 0.38. The kinematics considered are pitch and plunge motions based on the kinematics of the Agrius...
conference paper 2012
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Tay, W.B. (author), Bijl, H. (author), Van Oudheusden, B.W. (author)
Numerical simulations have been performed to examine the interference effects between an upstream flapping biplane airfoil arrangement and a downstream stationary tail at a Reynolds number of 1000, which is around the regime of small flapping micro aerial vehicles. The objective is to investigate the effect of the relative distance and angle of...
conference paper 2012
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Zhu, Z. (author), Van Tooren, M.J.L. (author), La Rocca, G. (author)
Wire harness design is an increasingly complex task. Knowledge Based Engineering (KBE) and optimization techniques can be used to support designers in handling this complexity. The wire harness design process can be divided in three main parts, namely electrical design, configuration design and geometrical routing. This paper describes the...
conference paper 2012
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Boon, D.J. (author), Dwight, R.P. (author), Sterenborg, J.J.H.M. (author), Bijl, H. (author)
We perform a fully stochastic analysis of an experiment in aerodynamics. Given estimated uncertainties on the principle input parameters of the experiment, including uncertainties on the shape of the model, we apply uncertainty propagation methods to a suitable CFD model of the experimental setup. Thereby we predict the stochastic response of...
conference paper 2012
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Verbart, A. (author), Langelaar, M. (author), Van Dijk, N. (author), Van Keulen, A. (author)
For aeronautical applications of topology optimization, it is of importance to develop topology optimization techniques, that can handle stress constraints in an efficient and accurate manner. The development of such topology optimization techniques is a challenging task due to the local nature of the stress constraints, their highly non-linear...
conference paper 2012
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Shi, H. (author), Fernandez-Villegas, I. (author), Bersee, H.E.N. (author)
In order to better understand the usefulness of single lap shear testing for the characterization of resistance welded thermoplastic composite joints, finite element method (FEM) and digital image correlation measurements (DIC) were combined to investigate the strain distributions of the joints during testing. Glass fibre reinforced...
conference paper 2012
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Vos, R. (author), Geuskens, F.J.J.M.M. (author), Hoogreef, M.F.M. (author)
This paper outlines a new concept for a pressure cabin design for blended-wing-body aircraft. An overview is presented of the wide oval cabin and why it is believed to be a possible alternative to existing designs of non-circular pressurized cabins. The perimeter of the oval cross section is formed by four smoothly connecting arcs of different...
conference paper 2012
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Vos, R. (author), Van Dommelen, J. (author)
This paper details a new software tool to aid in the conceptual design of blended-wingbody aircraft. The tool consists of four main modules. In the preliminary sizing model a class I estimate of the maximum take-off weight, wing loading, and thrust-to-weight ratio is calculated. This information is used together with an initial guess of the 30...
conference paper 2012
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Van der Valk, P.L.C. (author), Rixen, D.J. (author)
In order to achieve the goal of 20% renewable energy in 2020, as set by the European Union, large offshore wind farms are either under construction or in development through-out Europe. As many of the "easy" locations are already under development, offshore wind farms are moving further offshore into deeper waters, which results in a set of new...
conference paper 2012
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Akay, B. (author), Ferreira, C.S. (author), Van Bussel, G.J.W. (author), Herraez, I. (author)
This paper explores the evolution of radial flow in a Horizontal Axis Wind Turbine (HAWT) blade root region. The radial flow is analyzed in the potential flow and viscous flow regions. An experiment carried out by means of stereo Particle Image Velocimetry to measure the velocity field produced by a HAWT blade. While the radial flow in the...
conference paper 2012
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Fleming, P.A. (author), Van Wingerden, J.W. (author), Wright, A.D. (author)
In this paper we present results from an ongoing controller comparison study at the National Renewable Energy Laboratory’s (NREL’s) National Wind Technology Center (NWTC). The intention of the study is to demonstrate the advantage of using modern multivariable methods for designing control systems for wind turbines versus conventional approaches...
conference paper 2012
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Vandenheede, R.B.R. (author), Bernal, L.P. (author), Morrison, C.L. (author), Humbert, S. (author)
This paper presents the results of an experimental study of the aerodynamics of an elliptical flap plate wing in pitch-plunge motion. Several wing motion kinematics are derived from the kinematics of the Agrius Convolvuli (hawk moth) in hover. The experiments are conducted at a Reynolds number of 4, 800 and reduced frequency of 0.38, which are...
conference paper 2012
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Lynch, K.P. (author), Fahringer, T. (author), Thurow, B. (author)
A novel 3-D, 3-C PIV technique is described, based on volume illumination and a plenoptic camera to measure a velocity field. The technique is based on plenoptic photography, which uses a dense microlens array mounted near a camera sensor to sample the spatial and angular distribution of light entering the camera. Various algorithms are then...
conference paper 2012
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Bilimoria, K.D. (author), Krieger, R.A. (author)
A slot architecture is developed for separating satellites in congested Sun-synchronous orbits that are a limited natural resource in low Earth orbit. A key feature of the slot architecture is a phasing rule that provides sufficient separation between slots in the vicinity of their orbital crossing points. Other features involve the...
conference paper 2011
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Van Diepen, G. (author), Curran, R. (author)
Unbundling the traditional airfare is one of the airline industry’s practices to generate ancillary revenue in its struggle for profitability. However, unbundling might just as well negatively affect profit. In this paper deterministic price setting rules are established to guarantee profitability of unbundling irrespective of what product is...
conference paper 2011
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Braakenburg, M.L. (author), Hartjes, S. (author), Visser, H.G. (author), Hebly, S.J. (author)
This paper presents preliminary results from an ongoing research effort towards the development of a multi-event trajectory optimization methodology that allows to synthesize RNAV approach routes that minimize a cumulative measure of noise, taking into account the total noise effect aggregated for all inbound flight movements taking place within...
conference paper 2011
Searched for: mods_originInfo_publisher_s:"American%5C+Institute%5C+of%5C+Aeronautics%5C+and%5C+Astronautics%5C+%5C%28AIAA%5C%29"
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