1–20 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 ...

    Unsteady force on slender aircraft with free vortices in inviscid flow

    Laat, T.W.G. de / Coene, R. | Tema Archiv | 2002
    inviscid flow, such as arise in the slender-body approximation of an aircraft. Zero-force curves for the classical vortex pair behind a circular ...

    Uncertainty quantification of structural response using evidence theory

    Bae, H.R. / Grandhi, R.V. / Canfield, R.A. | Tema Archiv | 2003
    probability theory may not be suitable for a large complex system such as an aircraft, in that the information is never complete because of lack of ...

    Topological optimization of compliant adaptive wing structure

    Santer, M. / Pellegrino, S. | Tema Archiv | 2009
    Load-path-based topology optimization is used to synthesize a compliant adaptive aircraft wing leading edge, which deforms in a prescribed ...

    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 ...

    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 ...

    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 ...

    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 ...

    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. ...

    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 ...

    Shape optimization methodology for reducing the sonic boom initial pressure rise

    Farhat, Charbel / Maute, Kurt / Argrow, Brian et al. | Tema Archiv | 2007
    A shape optimization methodology for reducing the initial shock pressure rise on the ground of a supersonic aircraft is presented. This ...

    Scalable parallel approach for high-fidelity steady-state aeroelastic analysis and adjoint derivative computations

    Kenway, Gaetan K. / Kennedy, Graeme J. / Martins, Joaquim R.R.A. | Tema Archiv | 2014
    parallel scalability of the methods is demonstrated for a full aircraft configuration using an Euler computational fluid dynamics model with more ...

    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 ...

    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 ...

    Parallelization of rotorcraft aerodynamics Navier-Stokes codes

    Ekici, K. / Lyrintzis, A.S. | Tema Archiv | 2002
    ability to predict the flow around helicopter rotors is vital for the control of high-speed losses, vibration, and noise. The advent of tilt-rotor ...

    Optimization of aircraft wings for gust loads: interval analysis-based approach

    Rao, S.S. / Majumder, Luna | Tema Archiv | 2008
    An interval-based approach is presented for the optimization of aircraft structures under dynamic loads. As a specific application, the ...

    Octree-advancing front method for generation of unstructured surface and volume meshes

    McMorris, H. / Kallinderis, Y. | Tema Archiv | 1997
    around a high-speed civil transport type of aircraft configuration using a hybrid prismatic/tetrahedral mesh. ...

    Numerical calculation of nonlinear aerodynamics of wing-body configurations

    Rusak, Z. / Wasserstrom, E. / Seginer, A. | Tema Archiv | 1983
    relevance to modern missiles and aircraft. Details of the calculations clarify the significant nonlinear contribution of the body to the aerodynamic ...

    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 ...

    Noise control characteristics of synchrophasing, Part 2: experimental investigation

    Jones, J.D. / Fuller, C.R. | Tema Archiv | 1986
    A simplified cylindrical model of an aircraft fuselage is used to investigate the mechanisms of interior noise suppression of the ...