The operating principles of the ALEV3 three axis laser Doppler anemometer, which was designed for flight tests with the A-320 and A-340 aircraft, are depicted. If mounted on the aircraft center of gravity, the ALEV-3 allows true flight velocity in three directions and angles of attack and sideslip to be directly measured with a very good accuracy, in particular flight areas such as limit buffeting, stall, high Mach numbers, or sideslip flights. Aircraft parameter estimation, calculation, and calibration results are presented. The accuracies of velocity, static pressure and aerodynamic angle measurements were compared with classical anemometers precisions. Flight tests results of the ALEV-1 one axis laser anemometer for A-320 are given as a reference.


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    Title :

    Einsatz von Lasern bei Luftdatenmessungen (Utilization of Lasers for Air Data Measurements)


    Contributors:
    J. Hammer (author)

    Publication date :

    1991


    Size :

    18 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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