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US 7,922,120 B2Granted
Wing ice protection heater element network
AssigneeHoneywell International Inc.
InventorsMukesh Kumar, Edwin Wing-Kwong Yue, David Lazarovich
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AssigneeHoneywell International Inc.
InventorsMukesh Kumar, Edwin Wing-Kwong Yue, David Lazarovich
Estimating the term…
An ice prevention network comprising a plurality of non-overlapping heater elements arranged in a grid along an airfoil is provided, powered by a multiphase power source, each phase powering selected heater elements that can selectively be powered on and powered off. The grid has a number of zones extending along the airfoil perpendicular to the airflow over the airfoil and a number of sections extending along the surface of the airfoil parallel to the airflow over the airfoil. Each of the heater elements is assigned to a single power phase and arranged such that an arbitrary section may be deactivated without causing a phase imbalance of more than one heating unit and such that a single zone may be activated without causing a phase imbalance of more than one heating unit.
A heating arrangement method for a plurality of heater elements, the heater elements arranged in a grid along the surface of an airfoil with an airflow flowing across the airfoil, the grid having zones of heater elements extending along the surface perpendicular to the airflow, the grid further having sections of heater elements extending along the surface parallel to the airflow, the plurality of heater elements powered by a multiphase power source with three phases of power, the method comprising
Dependencies are inferred from the claim text.