1–20 von 96 Ergebnissen
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    Wing design for a civil filt-rotor transport aircraft: A preliminary study

    Rais-Rohani, M. / Baker, D.J. | Tema Archiv | 1994
    to identify the proper procedures to analyze these characteristics; and to develop the structural modeling and analysis techniques necessary ...

    Value-based multidisciplinary optimization for commercial aircraft design

    Peoples, Ryan / Willcox, Karen | Tema Archiv | 2004
    Traditional commercial aircraft design attempts to achieve improved performance and reduced operating costs by minimizing gross takeoff ...

    Using a genetic algorithm for structural topology design of helicopter rotor blades

    Fanjoy, D.W. / Crossley, W.A. | Tema Archiv | 2001
    Topology design methods are useful tools for conceptual design of structural components because they can be used to represent nearly any ...

    Unsteady aerodynamics of a flapped airfoil in subsonic flow by indicial concepts

    Hariharan, N. / Leishman, J.G. | Tema Archiv | 1995
    An approach, based on the indicial method, is described for computing the unsteady lift, pitching moment, hinge moment and the drag on a ...
    Verlag: American Institute of Aeronautics and Astronautics (AIAA) , Washington

    Transonic limit cycle flutter of high-aspect-ratio swept wings

    Bendiksen, Oddvar O. | Tema Archiv | 2006
    structural washout and is present in the first bending mode that enters LCO flutter. The aeroelastic washout effect may produce counterintuitive ...

    Time domain damping identification in helicopter rotor systems

    Zhao, Y. / Wereley, N.M. | Tema Archiv | 2001
    Accurate and reliable damping identification techniques are needed to assess stability margin with the development of advanced rotor ...

    The role of Kutta waves on oscillatory shock motion on an airfoil experiencing heavy buffeting

    Lee, B.H. / Murty, H. / Jiang, H. | Tema Archiv | 1993
    various airfoil geometries and free stream Mach numbers. The results are compared to those obtained from an empirical formulation given by ...

    The probabilistic design system development experience

    Adamson, J.D. | Tema Archiv | 1994
    Pratt and Whitney, under the sponsorship of the Air Force Material Command-Wright Laboratory/POT, is developing a Probabilistic Design ...

    The NASA/industry design analysis methods for vibrations (DAMVIBS) program-Boeing helicopters airframe finite element modeling

    Gabel, R. / Long, P. / Reed, D. | Tema Archiv | 1992
    Mathematical models based on the finite element method of structural analysis, as embodied in the NASTRAN computer code, are routinely used ...

    The effect of nonsymmetric pressure stiffness on the dynamic characteristics of solid rocket motors

    Christensen, E.R. | Tema Archiv | 1993
    This paper discusses the effect of pressure on the dynamics of pre-stiffened structures such as the Advanced Solid Rocket Motor (ASRM ...
    Schlagwörter: Struktur (Werkstoff)

    The Air Force's application of probabilistics to gas turbine engines

    Lykins, C. / Thomson, D. | Tema Archiv | 1994
    In order to improve the current turbine engine design practices, the Aero Propulsion and Power Directorate is developing a probabilistic ...

    Temperature distribution in a CFRP box structure subject to transient heat fluxes

    Miller, J.R. / Weaver, P.M. | Tema Archiv | 2001
    Finite element and analytical approaches are used to determine the transient temperature distribution through an air-filled box structure ...

    Structural analysis of a flexible structural member protruding into an interior flow field

    Weaver, M.A. / Gramoll, K.C. / Roach, R.L. | Tema Archiv | 1993
    element structural model, and a finite difference flow model form the basis of the solution method. The structure is iteratively loaded, with load ...

    Stress considerations in reduced-size aeroelastic optimization

    Karpel, M. / Brainin, L. | Tema Archiv | 1994
    -out changing the coordinates. These expressions, and their derivatives with respect to structural design variables are investigated in ...

    Space Shuttle Orbiter landing loads optimization

    Purtle, L.V. / Fann, C.P. / Eich, P.G. | Tema Archiv | 1995
    The paper discusses the method used in the Space Shuttle program to optimize landing gear loads and requirements to support increased ...
    Verlag: American Institute of Aeronautics and Astronautics (AIAA) , Washington

    Space program supporting technologies: structures, materials, and signal processing

    Schutzenhofer, L.A. / Blalock, S.J. / Johnston, L. et al. | Tema Archiv | 1995
    analysis, fracture mechanics, structural testing, structural dynamics, vibroacoustics, and probabilistics. It is demonstrated that each technology ...
    Verlag: American Institute of Aeronautics and Astronautics (AIAA) , Washington

    Simultaneous optimization for sizing and flight trajectory of a sailplane

    Suzuki, S. / Kawamura, N. | Tema Archiv | 1995
    This paper considers a simultaneous optimization for an aircraft design and a flight trajectory optimization problem. The two optimization ...
    Verlag: American Institute of Aeronautics and Astronautics (AIAA) , Washington

    Simulation of Shuttle/Mir docking

    Ghofranian, S. / Schmidt, M.S. / Schliesing, J. et al. | Tema Archiv | 1995
    APAS - Dynamic Analysis and Design System (DADS), First-Order Analysis Simulation Tool (FAST), and Ring-Finger Docking Dynamics (RFDD). This ...
    Verlag: American Institute of Aeronautics and Astronautics (AIAA) , Washington

    Simple boundary element analysis of laminated composite structures

    Makeev, A. / Armanios, E.A. | Tema Archiv | 2001
    . Constant stress and displacement elements are used. Closed-form fundamental solutions are derived. Numerical results are provided for several ...

    Sensitivity analysis of aeroelastic response of a wing using piecewise pressure representation

    Eldred, L.B. / Kapania, R.K. / Barthelemy, J.F. | Tema Archiv | 1993
    any aerodynamics and structural analysis capability. It assumes that for a given shape and elastic deformation, the aerodynamic analysis will ...