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    Comprehensive Analysis Aeroelastic Stability Predictions for the Mars Sample Recovery Helicopters and Ingenuity

    S. J. Wright / G. Sahragard-Monfared / N. L. Schatzman et al. | NTIS | 2024
    Keywords: Sample recovery helicopters

    Conceptual Design and Performance Analysis for a Large Civil Compound Helicopter

    C. Russell / W. Johnson | NTIS | 2012
    Keywords: Compound helicopters , Helicopters

    Coaxial Compound Helicopter for Confined Urban Operations

    W. Johnson / J. F. Elmore / E. B. Keen et al. | NTIS | 2016
    Keywords: Helicopters

      Coaxial Compound Helicopter for Confined Urban Operations

      W. Johnson / J. F. Elmore / E. B. Keen et al. | NTIS | 2016
      Keywords: Compound helicopters

    Design and Performance of Lift-Offset Rotorcraft for Short-Haul Missions

    W. Johnson / A. M. Moodie / H. Yeo | NTIS | 2012
    Keywords: Helicopters

      Design and Performance of Lift-Offset Rotorcraft for Short-Haul Missions

      W. Johnson / A. M. Moodie / H. Yeo | NTIS | 2012
      Keywords: Compound helicopters

    Aeromechanics Analysis of a Compound Helicopter

    H. Yeo / W. Johnson | NTIS | 2006
    Keywords: Helicopters

      Aeromechanics Analysis of a Compound Helicopter

      H. Yeo / W. Johnson | NTIS | 2006
      Keywords: Compound helicopters

    Quiet Helicopter for Air Taxi Operations

    W. Johnson | NTIS | 2020
    Keywords: Helicopters

    Observations from Exploration of VTOL Urban Air Mobility Designs

    W. Johnson / C. Silva | NTIS | 2018
    Keywords: Helicopters

      Observations from Exploration of VTOL Urban Air Mobility Designs

      W. Johnson / C. Silva | NTIS | 2018
      Keywords: Helicopters

    Design of a Slowed-Rotor Compound Helicopter for Future Joint Service Missions

    C. Silva / H. Yeo / W. Johnson | NTIS | 2010
    Keywords: Helicopters , Compound helicopters

    Exploration of Configuration Options for a Large Civil Compound Helicopter

    C. Russell / W. Johnson | NTIS | 2013
    Keywords: Compound helicopters

    NDARC - NASA Design and Analysis of Rotorcraft Validation and Demonstration

    W. Johnson | NTIS | 2010
    Keywords: Helicopters

    Aeromechanics Analysis of a Heavy Lift Slowed-Rotor Compound Helicopter

    H. Yeo / W. Johnson | NTIS | 2006
    Keywords: Helicopters , Heavy lift helicopters , Compound helicopters

    Stability Analysis of the Slowed-Rotor Compound Helicopter Configuration

    M. W. Floros / W. Johnson | NTIS | 2004
    Keywords: Helicopters

    Performance Analysis of a Utility Helicopter with Standard and Advanced Rotors

    H. Yeo / W. G. Bousman / W. Johnson | NTIS | 2002
    Keywords: Helicopters

    Model for Vortex Ring State Influence on Rotorcraft Flight Dynamics

    W. Johnson | NTIS | 2004
    Keywords: Helicopters

      Model for Vortex Ring State Influence on Rotorcraft Flight Dynamics

      W. Johnson | NTIS | 2005
      Keywords: Helicopters

    Performance of Advanced Heavy-Lift, High-Speed Rotorcraft Configurations

    W. Johnson / H. Yeo / J. C. Acree | NTIS | 2007
    Keywords: Helicopters , Compound helicopters

      Performance of Advanced Heavy-Lift, High-Speed Rotorcraft Configurations

      W. Johnson / H. Yeo / C. W. Acree | NTIS | 2007
      Keywords: Compound helicopters

    Analysis of Advanced Rotocraft Configurations

    W. Johnson | NTIS | 2004
    Keywords: Helicopters

    Wind Tunnel Measurements and Calculations of Aerodynamic Interactions between Tiltroter Aircraft

    W. Johnson / G. K. Yamauchi / M. R. Derby | NTIS | 2003
    Keywords: Helicopters

    NDARC: NASA Design and Analysis of Rotorcraft

    W. Johnson | NTIS | 2016
    Keywords: Helicopters

      NDARC NASA Design and Analysis of Rotorcraft

      W. Johnson | NTIS | 2017
      Keywords: Helicopters

    Wind Tunnel Measurements and Calculations of Aerodynamic Interactions Between Tiltrotor Aircraft

    W. Johnson / G. K. Yamauchi / M. R. Derby et al. | NTIS | 2003
    Keywords: Helicopters

    NDARC NASA Design and Analysis of Rotorcraft - Input, Appendix 8

    W. Johnson | NTIS | 2018
    Keywords: Helicopters

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