A method of determining the risk of ice deposition due to...

Details A method of determining the risk of ice deposition due to... A method of determining the risk of ice deposition due to...

B - Operations, Transporting

64

D

B64D 15/20 (2006.01) B64F 5/00 (2006.01) G01W 1/10 (2006.01) G01W 1/14 (2006.01)

Patent

CA 2496188

The invention relates to a method and an apparatus for determining the risk of ice deposition due to precipitation. According to the invention the measurements of precipitation known so far are combined with measurements of the actual amount of ice deposited from the precipitation. Said measurements are combined in a combination unit that is able to receive further parameter information, eg the amount and type of anti-icing liquid. Compared to previously a considerably more reliable determination of the risk of ice deposition is accomplished, eg on the wing of an aeroplane applied with anti- icing liquid, and so is reliable determination of the holdover time, HOT, during which one can be sure that the aeroplane is free from ice in the current weather conditions.

L'invention concerne un procédé ainsi qu'un appareil permettant de déterminer le risque de dépôt de givre lié à la chute de précipitations. Selon cette invention, les mesures de précipitations connues sont combinées avec des mesures de la quantité réelle de givre déposé suite à la chute desdites précipitations. Ces mesures sont combinées dans une unité de combinaison pouvant recevoir des informations paramétriques supplémentaires, par ex. la quantité et le type de liquide antigivrant. Par comparaison avec l'art antérieur, cette invention permet de déterminer de manière beaucoup plus fiable, le risque de dépôt de givre, par ex. sur une aile d'avion recouverte de liquide antigivrant, ainsi que la durée de protection (HOT) pendant laquelle l'avion est, de manière garantie, exempt de givre pour les conditions météorologiques courantes.

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