A simplified flight-management descent algorithm, programmed on a small programmable calculator, was developed and flight tested. It 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 algorithm may also be used for planning fuel-conservative descents when time is not a consideration. The descent path was calculated for a constant Mach/airspeed schedule from linear approximations of airplane performance with considerations given for gross weight, wind, and nonstandard temperature effects. The flight-management descent algorithm is described. The results of flight tests flown with a T-39A (Sabreliner) airplane are presented.


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    Title :

    Planning fuel-conservative descents with or without time constraints using a small programmable calculator: Algorithm development and flight test results


    Contributors:
    Knox, C. E. (author)

    Publication date :

    1983-03-01


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English