De-ice and anti-ice system and method for aircraft surfaces

B - Operations – Transporting – 64 – D

Patent

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B64D 15/12 (2006.01) B64D 15/14 (2006.01)

Patent

CA 2302007

A thermal de-ice and anti-ice system for aircraft surfaces employs a laminate in which flexible expanded graphite foil (20) is an electrical and heat conducting layer (22) that is disposed below an outer heat conducting layer (24), with an electrically insulating layer below the graphite layer. The flexible expanded graphite layer requires about three times less wattage than known resistance heating pad thermal systems to achieve de-ice and/or anti-ice temperatures. The temperature of the surface is controlled by varying the power supplied to the flexible expanded graphite layer of the laminate in response to a real time temperature value transmitted to a power control.

La présente invention concerne un système thermique dégivreur et anti-givre pour surfaces d'avions utilisant un stratifié dans lequel une feuille de graphite expansée flexible (20) constitue une couche thermo-conductrice électro-conductrice (22) disposée sous une couche thermo-conductrice extérieure (24), une couche électro-isolante étant disposée sous la couche de graphite. La couche de graphite précitée nécessite environ trois fois moins de puissance que les systèmes thermiques connus à éléments chauffants par résistance pour atteindre les températures de dégivrage et/ou d'anti-givre. On règle la température de la surface en faisant varier la puissance fournie à la couche de graphite du stratifié, en réaction à une valeur thermique en temps réel transmise à un régulateur de puissance.

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