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    NDARC: NASA Design and Analysis of Rotorcraft

    W. Johnson | NTIS | 2016

    3D-CDTI User Manual v2.1

    W. Johnson / V. Battiste | NTIS | 2016

    Coaxial Compound Helicopter for Confined Urban Operations

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

      Coaxial Compound Helicopter for Confined Urban Operations

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

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

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

    Design Considerations for a Mars Highland Helicopter

    L. A. Young / J. Delaune / W. Johnson et al. | NTIS | 2020