61–80 von 96 Ergebnissen
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    Optimal design of composite fuselage frames for progressive failure and energy absorption by genetic algorithms

    Woodson, M.B. / Johnson, E.R. / Haftka, R.T. | Tema Archiv | 1995
    method uses a progressive failure analysis and genetic algorithms to obtain frame designs optimized for maximum energy absorbtion. To demonstrate ...
    Verlag: American Institute of Aeronautics and Astronautics (AIAA) , Washington

    Modeling of permeability in composite laminates with delaminations and stitch cracks

    Roy, Samit / Nair, Abilash | Tema Archiv | 2006
    Polymer matrix composite (PMC) materials are ideal for aerospace structural applications, such as cryogenic fuel tanks of Reusable Launch ...

    Energy based design and analysis of staggered solvers for nonlinear transient aeroelastic problems

    Pipeno, S. / Farhat, C. | Tema Archiv | 2000
    partitioned procedure. We present a mathematical framework for assessing some important numerical properties of the chosen partitioned procedure, and ...
    Verlag: American Institute of Aeronautics and Astronautics (AIAA) , Reston

    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)

    Predicted dynamic buffet loads from limited response measurements: T-45A horizontal tail

    Burnham, J.K. | Tema Archiv | 1995
    An experimental and analytical process was developed to predict structural dynamic buffet loads and response from limited response ...
    Verlag: American Institute of Aeronautics and Astronautics (AIAA) , Washington

    Dynamic simulation of RMS-assisted Shuttle/Mir docking

    Wu, S.C. / Mayo, J. / Schmidt, M. et al. | Tema Archiv | 1995
    berthing of a Docking Module to the orbiter. Dynamic forces modeled in the simulation of docking operation include: the arm and orbiter dynamics ...
    Verlag: American Institute of Aeronautics and Astronautics (AIAA) , Washington

    Formulation of a rotor-system damage detection methodology

    Ganguli, R. / Chopra, I. / Haas, D. | Tema Archiv | 1995
    A rotor-system damage detection methodology is formulated for an articulated rotor in hover, and in forward flight. Damages are represented ...
    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

    Optimum design of high aspect ratio wings subject to aeroelastic constraints

    Butler, R. / Lillico, M. / Banerjee, J.R. et al. | Tema Archiv | 1995
    subject to constraints on flutter and divergence speed. The time to both model and optimize designs is quicker than FE methods and the program ...
    Verlag: American Institute of Aeronautics and Astronautics (AIAA) , Washington

    Multi-criterion preliminary design of a tetrahedral truss platform

    Wu, K.C. | Tema Archiv | 1995
    minimum member area. Non-structural mass represents the node and joint hardware used to assemble the truss structure. Taguchi methods are used to ...
    Verlag: American Institute of Aeronautics and Astronautics (AIAA) , Washington

    A physical explanation of free play effects on the flutter response of an all movable control surface

    Pitt, D.M. | Tema Archiv | 1995
    are used during the simulation. One state model is used whenever the stabilator rotation angle is inside the free play zone, and another state ...
    Verlag: American Institute of Aeronautics and Astronautics (AIAA) , Washington

    Modeling of composite turbo-propellers using an efficient six-node triangular finite element

    Bhumbla, R. / Kosmatka, J.B. | Tema Archiv | 1995
    ) turbo-propeller blade and for a blade with similar geometry made with advanced composite materials (graphite/epoxy). These results are compared ...
    Verlag: American Institute of Aeronautics and Astronautics (AIAA) , Washington

    Probabilistic analysis of docking mechanism-induced loads for mir/shuttle mission

    Lin, H.Z. / Ghofranian, S. / Schmidt, M. et al. | Tema Archiv | 1995
    This paper presents a methodology for probabilistic loads analysis and its application to the STS-71 orbiter/Mir space station docking. It ...
    Verlag: American Institute of Aeronautics and Astronautics (AIAA) , Washington

    Dynamic analysis of bearingless main rotor (BMR) system with hub flexbeam damage

    Kim, K.C. | Tema Archiv | 1995
    , and main rotor blades, was modeled as a number of elastic beam finite elements, wherein each beam element undergoes flap bending, lag bending ...
    Verlag: American Institute of Aeronautics and Astronautics (AIAA) , Washington

    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

    Helicopter vibration reduction with trailing edge flaps

    Milgram, J. / Chopra, I. | Tema Archiv | 1995
    rotorcraft analysis. The analysis is modified to incorporate an unsteady aerodynamic model including flap effects. Predicted blade and pitch link ...
    Verlag: American Institute of Aeronautics and Astronautics (AIAA) , Washington

    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

    BLASIM: a computational tool to assess ice impact damage on engine blades

    Reddy, E.S. / Abumeri, G.H. / Chamis, C.C. | Tema Archiv | 1993
    impact damage, and post-impact dynamics are discussed for solid and composite blades. ...

    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 ...

    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 ...