Electric de-icing device and related monitoring system
AssigneeAircelle
InventorsDavid Pereira, Laurence Lemains
Life of this patent
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Abstract
The invention relates to a de-icing device for an element of a nacelle of a turbojet engine, including at least one heating resistant mat connected to at least one electrical power source (3) and thus defining an assembly (1) of resistant mats, characterized in that the assembly of resistant mats includes one or more subassemblies of resistant mats, each subassembly in turn including one or more resistant mats of the assembly, and each subassembly of resistive mats having a different ohmic value.
Claims13
A de-icing device for an element of a nacelle of a turbojet engine, including at least one heating resistant mat connected to at least one electrical power source and thus defining an assembly of heating resistant mats, wherein the heating resistant mats of the assembly are mounted in parallel, and wherein the assembly of heating resistant mats includes one or more subassemblies of heating resistant mats, each subassembly in turn including one or more heating resistant mats of the assembly, and each subassembly of heating resistant mats having, at least when the heating resistant mats are operational, a different nominal ohmic value.
A de-icing device for an element of a nacelle of a turbojet engine, the de-icing device comprising:
- at least one heating resistant mat connected to at least one electrical power source, the at least one heating resistant mat comprising an assembly of heating resistant mats mounted in parallel;
- and
- means for measuring voltage value and intensity of current circulating in the heating resistant mat assembly,
- wherein the assembly of heating resistant mats includes one or more subassemblies of heating resistant mats, each subassembly in turn including one or more heating resistant mats, and each subassembly of heating resistant mats having a different nominal ohmic value, and
- wherein a computer of the deicing device is configured to start from the value of the voltage and intensity of the current circulating in the heating resistant mat assembly to compute an effective equivalent resistance value of said assembly of heating resistant mats and compare said obtained effective equivalent resistance value to at least one set of nominal equivalent resistance values computed for different cases of failure of at least one heating resistant mat subassembly so as to determine a faulty heating resistant mat subassembly or subassemblies in case of deviation above a predetermined value taking into account machining allowances and measurement imprecisions.
Dependencies are inferred from the claim text.