This study treats three 'missing' aspects of previous research on escape guidance strategies during microburst encounters. First, the performance of three longitudinal guidance laws in combination with one single lateral guidance law is evaluated when more than one microburst core is present. Altitude guidance proves to be the most robust and gives the most promising results, provided the reference altitude to which the aircraft is controlled, is selected properly. Therefore, is this study attempts are made to develop either a logic that adjusts the reference altitude during the escape maneuver. Unfortunately, the results are not satisfactory. Third, the 3 degrees-of-freedom (DOF) model is extended to a full 6 DOF model in order to investigate the effects of inertia and windspeed variations over the aircraft's size on performance and controllability. Inertia decreases performance of all strategies. The windspeed variations cause additional body moments, but even for rather severe microbursts these moments are not expected to cause controllability problems. Finally some recommendations for future research are presented. For example, turbulence should be modeled and implemented to study controllability effects.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Guidance Techniques for Near-Optimal Lateral Escape Maneuvers in the Presence of Windshear


    Contributors:
    M. Selier (author)

    Publication date :

    1997


    Size :

    118 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English





    Lateral Escape Guidance Strategies for Microburst Windshear Encounters

    Visser, H. G. / AIAA | British Library Conference Proceedings | 1997



    Optimal and Near-Optimal Take-off Maneuvers in the Presence of Windshear

    Elferink, K. / Visser, H. G. / Sociewty of Automotive Engineers of New York et al. | British Library Conference Proceedings | 2000


    Optimal and Near-Optimal Take-off Maneuvers in the Presence of Windshear

    Visser, H.G. / Elferink, K. | SAE Technical Papers | 2000