1–20 von 58 Ergebnissen
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    Acoustic Flight Tests of Rotorcraft Noise-Abatement Approaches Using Local Differential GPS Guidance

    R. T. N. Chen / W. S. Hindson / A. W. Mueller | NTIS | 1995
    Schlagwörter: Blade-vortex interaction , Helicopter design

    Acoustic Predictions of Manned and Unmanned Rotorcraft Using the Comprehensive Analytical Rotorcraft Model for Acoustics (CARMA) Code System

    D. D. Boyd / C. L. Burley / D. A. Conner | NTIS | 2005
    Schlagwörter: Blade slap noise , Bo-105 helicopter

    Adaptive Rotor Blade Concepts -Direct Twist and Camber Variation-

    A. Bueter / U. C. Ehlert / D. Sachau et al. | NTIS | 2001
    Schlagwörter: Helicopter rotors , Blade tips

    Advancing Blade Concept (ABC) Technology Demonstrator

    A. J. Ruddell / W. Groth / R. McCutcheon | NTIS | 1981
    Schlagwörter: Helicopter rotors , ABC(Advancing Blade Concept)

    Analysis and Correlation of Test Data from an Advanced Technology Rotor System

    D. Jepson / R. Moffitt / J. B. Hilzinger | NTIS | 1980
    Schlagwörter: Helicopter performance , Blade tips

    An Assessment of the Hover Performance of The XH-59A Advancing Blade Concept Demonstration Helicopter

    D. N. Arents | NTIS | 1977
    Schlagwörter: Blade airfoils , Helicopter rotors

    Calculation of the Aerodynamic Flow Field in the Vicinity of a Sea King Helicopter

    K. R. Reddy | NTIS | 1983
    Schlagwörter: Helicopter rotors , Blade tips

    Center for Excellence for Rotary Wing Aircraft Technology

    R. B. Gray / D. P. Schrage / J. I. Craig et al. | NTIS | 1988
    Schlagwörter: Blade tips , Unsteady helicopter rotors

    Correlation of Puma Airloads-Lifting-Line and Wake Calculation

    W. G. Bousman / C. Young / N. Gilbert et al. | NTIS | 1989
    Schlagwörter: Blade tips , Helicopter rotors , Mixed bladed helicopter rotor blades , Swept blade tips(Rotor blades)

    Design and Performance Analysis of a Prototype Circulation Control Helicopter Rotor

    J. B. Wilkerson | NTIS | 1973
    Schlagwörter: Helicopter rotors , Blade airfoils

    Directionality of Helicopter Noise and Its Exploitation

    M. V. Lowson | NTIS | 1996
    Schlagwörter: Helicopter rotors , Bvi(Blade vortex interaction)

    Dynamic Stall on Advanced Airfoil Sections

    W. J. McCroskey / K. W. McAlister / L. W. Carr et al. | NTIS | 1980
    Schlagwörter: Helicopter rotors , Retreating blade stall

    Effect of Rotor Blade Root Cutout on Vertical Drag

    S. J. Cassarino | NTIS | 1970
    Schlagwörter: Helicopter rotors , Rotor blade root cutouts

    Exploratory Flight Investigation and Analysis of Structural Loads Encountered by a Helicopter Hingeless Rotor System

    J. F. Ward | NTIS | 1966
    Schlagwörter: Helicopter , Rigid rotor helicopter , Blade

    Future Directions in Rotorcraft Technology at Ames Research Center

    E. W. Aiken / R. A. Ormiston / L. A. Young | NTIS | 2000
    Schlagwörter: Individual blade controls , Hact(Helicopter active control technology)