A method of operating an optical icing conditions sensor includes transmitting (402), with a transmitter, a light beam and thereby illuminating an illumination volume. A receiver array receives (404) light over a range of receiving angles. The receiver array is configured to receive light having the wavelength over a receiver array field of view which overlaps with the illumination volume. A controller measures (406) an intensity of light received by the receiver array. The controller determines (410) that a cloud is present if the intensity is greater than a threshold value. The controller calculates (412) scattering profile data of the light received by the receiver array if a cloud is determined to be present, which includes an angle of a scattering intensity peak within the range of receiving angles and a breadth of the scattering intensity peak. The controller (414) estimates a representative droplet size within the cloud using the scattering profile data.


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    Title :

    DETECTION OF AIRCRAFT ICING CONDITIONS AND DETERMINATION OF LIQUID CLOUD DROPLET SIZE


    Additional title:

    ERKENNUNG VON FLUGZEUGVEREISUNGSBEDINGUNGEN UND BESTIMMUNG DER GRÖSSE VON FLÜSSIGKEITSWOLKENTRÖPFCHEN
    DÉTECTION DE CONDITIONS DE GIVRAGE D'AÉRONEF ET DÉTERMINATION DE LA TAILLE DE GOUTTELETTES DE NUAGE LIQUIDE


    Contributors:

    Publication date :

    2024-08-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01N Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften , INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / G01S RADIO DIRECTION-FINDING , Funkpeilung



    DETECTION OF AIRCRAFT ICING CONDITIONS AND DETERMINATION OF LIQUID CLOUD DROPLET SIZE

    ANDERSON KAARE JOSEF / RAY MARK / RAMTHUN KENT ALLAN et al. | European Patent Office | 2023

    Free access

    DETECTION OF AIRCRAFT ICING CONDITIONS AND DETERMINATION OF LIQUID CLOUD DROPLET SIZE

    ANDERSON KAARE JOSEF / RAY MARK / RAMTHUN KENT ALLAN et al. | European Patent Office | 2023

    Free access

    Aircraft Performance Sensitivity to Icing Cloud Conditions

    Campbell, Scot / Broeren, Andy / Bragg, Michael et al. | AIAA | 2007



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