Large birds and glider pilots commonly use updrafts caused by convection in the lower atmosphere to extend flight duration, increase cross-country speed, improve range, or simply to conserve energy. Uninhabited air vehicles may also have the ability to exploit updrafts to improve performance. An updraft model was developed at NASA Dryden Flight Research Center (Edwards, California) to investigate the use of convective lift for uninhabited air vehicles in desert regions. Balloon and surface measurements obtained at the National Oceanic and Atmospheric Administration Surface Radiation station (Desert Rock, Nevada) enabled the model development. The data were used to create a statistical representation of the convective velocity scale, w*, and the convective mixing-layer thickness, zi. These parameters were then used to determine updraft size, vertical velocity profile, spacing, and maximum height. This paper gives a complete description of the updraft model and its derivation. Computer code for running the model is also given in conjunction with a check case for model verification.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Updraft Model for Development of Autonomous Soaring Uninhabited Air Vehicles


    Beteiligte:
    M. J. Allen (Autor:in)

    Erscheinungsdatum :

    2006


    Format / Umfang :

    19 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch






    AIAA 2006-1510 Updraft Model for Development of Autonomous Soaring Uninhabited Air Vehicles

    Allen, M. J. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2006


    Solar-Powered Uninhabited Aerial Vehicle for Autonomous Soaring

    Rosales, Jesus G. / Engel, Eugen / Igwe, Grace et al. | AIAA | 2019


    Autonomous Soaring for Improved Endurance of a Small Uninhabited Air Vehicle

    Allen, M. J. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2005