Pulse Electrothermal Deicing Of Complex Shapes
OwnerVictor Petrenkoinventor
Life of this patent
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Abstract
A pulse electrothermal deicing apparatus comprises at least one complex shape characterized by a thickness profile configured to generate uniform power per unit area to melt an interfacial layer of ice. A method of optimizing thicknesses of complex shapes for a pulse electrothermal deicing system includes assigning initial estimates of the pulse electrothermal deicing system parameters. A temperature distribution, a temperature range and a refreezing time produced by a deicing pulse are modeled. Shape thicknesses are adjusted according to the temperature range, deicing pulse parameters are adjusted according to the deicing pulse, and the modeling and adjusting is repeated until the temperature range and the refreezing time are within predetermined limits.
Claims18
Pulse electrothermal deicing apparatus comprising at least one complex shape characterized by a thickness profile configured to generate uniform power per unit area to melt an interfacial layer of ice.
A method of optimizing thicknesses of complex shapes for a pulse electrothermal deicing system, comprising:
- assigning size and geometry to each shape of the pulse electrothermal deicing system and connectivity of the shapes;
- assigning initial thicknesses to each shape;
- assigning an initial estimate to a deicing pulse duration;
- modeling a temperature distribution over the surface of each shape based upon the deicing pulse duration and the thickness of each shape;
- determining a refreezing time for each shape after application of the deicing pulse;
- adjusting the thickness of each shape based upon the modeled temperature distribution if the modeled temperature distribution is not within a desired tolerance;
- adjusting the deicing pulse duration based upon the determined refreezing time and if the determined refreezing time is not within defined limits;
- and
- repeating the steps of modeling, determining and adjusting until the temperature distribution is within the desired tolerance and the refreezing time is within defined limits.
Pulse electrothermal deicing apparatus comprising at least one axially symmetric complex shape characterized by a thickness profile configured to generate uniform power per unit area to melt an interfacial layer of ice.
Dependencies are inferred from the claim text.