A simple, airborne, flight-management descent algorithm was developed and programmed into a small programmable calculator. The algorithm may be operated in either a time mode or speed mode. The time mode was designed to aid the pilot in planning and executing a fuel-conservative descent to arrive at a metering fix at a time designated by the air traffic control system. The speed model was designed for planning fuel-conservative descents when time is not a consideration. The descent path for both modes was calculated for a constant with considerations given for the descent Mach/airspeed schedule, gross weight, wind, wind gradient, and nonstandard temperature effects. Flight tests, using the algorithm on the programmable calculator, showed that the open-loop guidance could be useful to airline flight crews for planning and executing fuel-conservative descents.


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    Titel :

    Planning Fuel-Conservative Descents in an Airline Environmental Using a Small Programmable Calculator: Algorithm Development and Flight Test Results


    Beteiligte:
    C. E. Knox (Autor:in) / D. D. Vicroy (Autor:in) / D. A. Simmon (Autor:in)

    Erscheinungsdatum :

    1985


    Format / Umfang :

    76 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch