1–20 of 382 hits
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    X-31A flight flutter test excitation by control surfaces

    Hodson, C.H. / Dobbs, S.K. / Brosman, M.J. et al. | Tema Archive | 1993
    frequencies and damping versus dynamic pressure and mach number extracted from the response data are given. The required structural modes were ...

    Wing-tail interaction flutter revisited

    Yurkovich, R. | Tema Archive | 1996
    . In this case the flap provides the downwash necessary for the aerodynamic coupling between the wing and the horizontal tail. In the earlier ...
    Publisher: American Institute of Aeronautics and Astronautics (AIAA) , Reston
    Keywords: Dynamik

    Wing flutter boundary prediction using unsteady Euler aerodynamic method

    Lee-Rausch, E.M. / Batina, J.T. | Tema Archive | 1993
    algorithm and the addition of the structural equations of motion for their simultaneous time-integration with the governing flow equations. The ...

    Wing design for a civil filt-rotor transport aircraft: A preliminary study

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

    Vibration reduction in hingeless rotors using an actively controlled trailing edge flap: implementation and time domain simulation

    Millott, T.A. / Freiedmann, P.P. | Tema Archive | 1994
    effectiveness and power efficiency of the ACF, but at the cost of slightly higher input angles. Trend studies show that the torsional stiffness of the ...

    Vibration reduction in helicopter rotors using an active control surface located on the blade

    Millott, T.A. / Friedmann, P.P. | Tema Archive | 1992
    spring restrained model of the blade is used with fully coupled flap-lag-torsional dynamics for each blade. The rotor trim and blade response are ...

    Vibration of adaptive wing-rotor system for tiltrotor aircraft application

    Song, Ohseop / Kwon, Hyuck-Dong / Librescu, L. | Tema Archive | 2000
    constituent materials, transverse shear, rotatory inertias. In addition, the gyroscpic effects, spin rate and tilt angle of the spinning rotor are ...
    Publisher: American Institute of Aeronautics and Astronautics (AIAA) , Reston

    Vibration and flutter of stiff-inplane elastically tailored composite rotor blades

    Smith, E.C. | Tema Archive | 1993
    Aeroelastic response, blade and hub loads, and shaft-fixed aeroelastic stability is investigated for a helicopter with elastically tailored ...

    Variable stiffness spar wind-tunnel model development and testing

    Florance, James R. / Heeg, Jennifer / Spain, Charles V. et al. | Tema Archive | 2004
    control surfaces and by varying wing structural stiffness via a Variable Stiffness Spar (VSS) mechanism. High design loads compromised the VSS ...

    Value-based multidisciplinary optimization for commercial aircraft design

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

    Utilization of CAD/CAE for concurrent design of structural aircraft components

    Kahn, W.C. | Tema Archive | 1993
    and subsystems. The Aerodynamic, Stress, Mass Properties, Structural Dynamics groups gave inputs/requirements for design configuration. ...

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

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

    Unsteady transonic potential flow over a flexible fuselage

    Gibbons, M.D. | Tema Archive | 1993
    A flexible fuselage capability has been developed and implemented within version 1.2 of the CAP-TSD code. The capability required adding ...

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

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

    Unsteady aerodynamics and flutter of propfans using a three-dimensional full-potential solver

    Bakhle, M.A. / Reddy, T.S. | Tema Archive | 1993
    A full-potential solver coupled with a linear structural dynamics model is used to calculate the unsteady aerodynamics and aeroelasticity ...

    U-groove aluminum weld strength improvement

    Verderaime, V. / Vaughan, R. | Tema Archive | 1996
    generally the least understood. This study investigated experimental strain distributions across a thick aluminum U-grooved weld and identified two ...
    Publisher: American Institute of Aeronautics and Astronautics (AIAA) , Reston

    Two-dimensionally deployable hexapod truss

    Onoda, J. / Fu, Dan-Ying / Minesugi, K. | Tema Archive | 1995
    Publisher: American Institute of Aeronautics and Astronautics (AIAA) , Washington

    Two architectures for bending-twisting flapping using macro-fiber composites

    Samur, Algan / Erturk, Alper | Tema Archive | 2012
    maneuverability. Recent efforts have focused on the use of smart materials as actuators in biomimetic morphing and flapping. MFCs (macro-fiber composites ...
    Keywords: intelligenter Werkstoff

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

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

    Transient moisture concentration profiles and hygroscopic stress fields in an asbestos phenolic nozzle liner

    Nguyen, T.V. / Mah, C.S. / Bhe, S.T. | Tema Archive | 1995
    were generated on moisture absorption rates and dimensional changes due to changes in the amount of moisture absorbed. The experimental data ...
    Publisher: American Institute of Aeronautics and Astronautics (AIAA) , Washington