1–20 of 47 hits
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    Wind Tunnel Testing of a 120th Scale Large Civil Tilt-Rotor Model in Airplane and Helicopter Modes

    Theodore, Colin R. / Willink, Gina C. / Russell, Carl R. et al. | NTRS | 2014
    Keywords: Airplane and Helicopter Modes , Large Civil Tilt Rotor LCTR Model

    Wind-Tunnel Evaluation of the Effect of Blade Nonstructural Mass Distribution on Helicopter Fixed-System Loads

    Wilbur, Matthew L. / Yeager, Jr, William T. / Singleton, Jeffrey D. et al. | NTRS | 1998
    Keywords: ROTOR DYNAMICS ANALYSES , ARES-1(AEROELASTIC ROTOR EXPERIMENTAL SYSTEM 1) , HELICOPTER VIBRATION , MODEL ROTOR TESTING

    Theoretical analysis of oscillations in hovering of helicopter blades with inclined and offset flapping and lagging hinge axes

    Morduchow, M / Hinchey, F G | NTRS | 1950
    Keywords: ROTOR BLADES - STABILITY , ROTOR BLADES - OSCILLATIONS , ROTOR BLADES, HINGED , PROPELLERS, HELICOPTER , ROTOR BLADES - FLAPPING

    The changing helicopter.

    Gessow, A. | NTRS | 1967
    Keywords: MILITARY HELICOPTER , ROTOR SYSTEM , HELICOPTER DESIGN

    The application of airfoil studies to helicopter rotor design

    Gustafson, F B | NTRS | 1949
    Keywords: AIRFOILS - NACA 8-H-12 - LOW-DRAG (HELICOPTER) , ROTOR BLADES , AIRFOILS - NACA 9-H-12 - LOW-DRAG (HELICOPTER) , AIRFOILS, HELICOPTER , PROPELLERS, HELICOPTER

    Tests in the NACA two-dimensional low-turbulence tunnel of airfoil sections designed to have small pitching moments and high lift-drag ratios

    Tetervin, Neal | NTRS | 1943
    Keywords: PRESSURE DISTRIBUTION-AIRFOILS-NACA HELICOPTER , AIRFOILS-ROTOR BLADES

    Status of V/STOL Research and Development in the United States

    John P Campbell | NTRS | 1964
    Keywords: Helicopter , Rotor systems

    Static-Thrust Tests of Six Rotor-Blade Designs on a Helicopter in the Langley Full-Scale Tunnel

    Dingeldein, Richard C. / Schaefer, Raymond F. | NTRS | 1945
    Keywords: PROPELLERS, HELICOPTER - THRUST, STATIC , ROTOR BLADES

    Static-thrust Investigation of Full-scale PV-2 Helicopter Rotors Having NACA 0012.6 and 23012.6 Airfoil Sections

    Lipson, Stanley | NTRS | 1946
    Keywords: PROPELLERS, HELICOPTER - THRUST, STATIC , AIRFOILS - NACA 0012 6 ROTOR BLADE , PROPELLERS, HELICOPTER - P-V ENG FORUM 2 , AIRFOILS - NACA 23012 6 ROTOR BLADE

    Stability characteristics of a tandem-rotor transport helicopter as determined by flight test

    Kelly, J. R. / Winston, M. M. | NTRS | 1965
    Keywords: TANDEM-ROTOR HELICOPTER

    Rotor Performance Predictions of a Next Generation Mars Science Helicopter

    Dorsa Shirazi / Athena Chan / Wayne Johnson | NTRS
    Keywords: Mars Science Helicopter , Rotor Performance

    RESULTS OF WIND-TUNNEL MEASUREMENTS ON A HELICOPTER ROTOR OPERATING AT EXTREME THRUST COEFFICIENTS AND HIGH-TIP-SPEED RATIOS

    Jenkins, J. L., Jr. / Sweet, G. E. | NTRS | 1963
    Keywords: HELICOPTER ROTOR , ROTOR AERODYNAMICS

    RESULTS OF WIND-TUNNEL MEASUREMENTS ON A HELICOPTER ROTOR OPERATING AT EXTREME THRUST COEFFICIENTS AND HIGH-TIP-SPEED RATIOS

    Jenkins, J. L., Jr. / Sweet, G. E. | NTRS | 1963
    Keywords: HELICOPTER ROTOR , ROTOR AERODYNAMICS

    RESULTS OF SOME WIND TUNNEL AND FLIGHT STUDIES WITH HELICOPTERS AT NASA

    Huston, R. J. / Tapscott, R. J. | NTRS | 1963
    Keywords: HELICOPTER ROTOR , ROTOR SYSTEM

    Response of helicopter rotors to periodic forces

    Kelley, Bartram | NTRS | 1945
    Keywords: ROTOR BLADES, HINGED , PROPELLERS, HELICOPTER - VIBRATION

    Response of a helicopter rotor to oscillatory pitch and throttle movements

    Carpenter, Paul J / Peitzer, Herbert E | NTRS | 1949
    Keywords: AIRFOILS - NACA 23015 HELICOPTER , ROTOR BLADES - OSCILLATIONS , ROTOR BLADES, HINGED , HELICOPTER TOWERS - NACA , ROTORS, HELICOPTER

    Mars Helicopter Ingenuity Rotor Geometry

    Witold J F Koning / Michelle Dominguez | NTRS | 2024
    Keywords: Rotor , Helicopter

    Improved Mars Helicopter Aerodynamic Rotor Model for Comprehensive Analyses

    Koning, Witold J. F. / Johnson, Wayne / Grip, Havard F. | NTRS | 2018
    Keywords: Rotor Model , Mars Helicopter