41–60 von 61 Ergebnissen
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    Weight Indexing for Wing-Shape Multi-Objective Optimization

    Elham, Ali / Tooren, Michel J.L. van | Tema Archiv | 2014
    maximum takeoff weight and the aircraft direct operating cost are used as the design figures of merit to identify the best wings among the wings ...

    Harmonic-balance-based code-coupling algorithm for aeroelastic systems subjected to forced excitation

    Blanc, F. / Roux, F.X. / Jouhaud, J.C. | Tema Archiv | 2010
    an aircraft wing is taken into account in the computation of unsteady aerodynamic forces caused by an oscillating aileron. ...

    Numerical aerodynamic optimization incorporating laminar-turbulent transition prediction

    Driver, Jon / Zingg, David W. | Tema Archiv | 2007
    . H., 'A Class of Airfoils Designed for High Lift in Incompressible Flow,' Journal of Aircraft, Vol. 10, No. 10, 1973, pp. 610-617) in the ...

    Corrosion fatigue through particle swarm optimization

    Pidaparti, R.M. / Jayanti, S. | Tema Archiv | 2003
    structural integrity of aircraft structures. Operation of aging aircraft under a corrosive environment may cause failure of the various parts due to ...

    Increasing allowable flight loads by improved structural modeling

    Acar, Erdem / Haftka, Raphael T. / Sankar, Bhavani V. et al. | Tema Archiv | 2006
    researchers are constantly improving the accuracy of structural analysis and failure prediction, the maximum allowable flight loads of those aircraft ...

    Computational fluid dynamics-based drag prediction and decomposition

    Paparone, L. / Tognaccini, R. | Tema Archiv | 2003
    wing-body configuration demonstrates the capability to analyze realistic aircraft configurations, although the computation of the total drag ...

    Structural optimization using computational aerodynamics

    Raveh, D.E. / Levy, Y. / Karpel, M. | Tema Archiv | 2000
    A recently developed methodoIogy for aircraft structural design, based on nonlinear airloads, is extended to include a modal-based ...

    Systems identification approach for a computational-fluid-dynamics-based aeroelastic analysis

    Gupta, Kajal Kumar / Bach, Can | Tema Archiv | 2007
    This paper presents a novel state-space model-based systems identification method for accurate and efficient simulation of the aeroelastic ...

    Short-scale instabilities in trailing wake vortices in a stratified fluid

    Delisi, D.P. / Robins, R.E. | Tema Archiv | 2000
    reaches a maximum at T of around 4. For a cornmercial aircraft, the latter time corresponds to distances of around 10 km - 25 km behind the ...

    Automatic differentiation in robust optimization

    Su, J. / Renaud, E. | Tema Archiv | 1997
    In this study the use of automatic differentiation techniques significantly reduces the number of analysis calls and the CPU (Computer ...

    Brazier effect in multibay airfoil sections

    Cecchini, Luca S. / Weaver, Paul M. | Tema Archiv | 2005
    Long, thin-walled, prismatic sections subject to bending moments suffer a nonlinearity in their bending response. Brazier (Late of the ...

    Surrogate modeling for uncertainty assessment with application to aviation environmental system models

    Allaire, D. / Willcox, K. | Tema Archiv | 2010
    surrogate predictions. The approach is developed for a general class of models and is demonstrated on an aircraft emissions prediction model that is ...

    Prediction method for broadband noise from unsteady flow in a slat cove

    Agarwal, Anurag / Morris, Philip J. | Tema Archiv | 2006
    Noise from high-lift devices such as slats and flaps can contribute significantly to the overall aircraft sound pressure levels ...

    High-lift airfoil separation with dielectric barrier discharge plasma actuation

    Little, Jesse / Samimy, Mo | Tema Archiv | 2010
    The efficacy of a single dielectric barrier discharge plasma actuator for controlling turbulent boundary-layer separation from the ...

    Practical three-dimensional aerodynamic design and optimization using unstructured meshes

    Elliott, J. / Peraire, J. | Tema Archiv | 1997
    extension to optimization of realistic, complete aircraft geometries, is presented. Two sample optimizations are performed. The first is the inverse ...

    eN transition prediction in three-dimensional boundary layers on inclined prolate spheroids

    Stock, Hans W. | Tema Archiv | 2006
    transport aircraft concerning the reduction of fuel consumption, environmental pollution, takeoff weight, and significant amelioration of cruise ...

    Efficient successive reanalysis technique for engineering structures

    Bae, Ha-Rok / Grandhi, Ramana V. / Canfield, Robert A. | Tema Archiv | 2006
    two popular engineering problems: sensitivity analysis and reliability analysis of an aircraft wing structure. ...

    Four-channel suction distribution optimization experiments for laminar flow control

    Wright, M.C.M. / Nelson, P.A. | Tema Archiv | 2000
    ., 'Automatic Control of Boundary-llayer Transition,' AIAA Journal, Vol. 35, No. 1, 1997, pp. 85-90) for the case of a wind-tunnel model with two ...

    Structural optimization with static aeroelastic and stress constraints using expandable modal basis

    Karpel, M. / Moulin, B. / Love, M.H. | Tema Archiv | 1999
    aeroelastic design has great potential in the preliminary design of aircraft for which answers to what-if-type questions are needed in short order ...

    Solving very large-scale structural optimization problems

    Hüttner, F. / Grosspietsch, M. | Tema Archiv | 2007
    . Software has been developed and successfully applied to the optimization of the outer wing panels of a large military transporter aircraft. ...