Abstract
Abstract An electrical analog technique is used to solve the equations for intermittent heat transfer during icing conditions. The results of the analog investigation applied to an internally heated propeller show good agreement with measured time-temperature data previously reported in the literature. The greater effectiveness obtained by using larger amounts of power for shorter time intervals is demonstrated. The power-density requirements over the heated area are shown to be different for the case of intermittent heating as compared to steadily heated ice-prevention systems. A more effective heater design, utilizing a conductive coating on the blade surface, would diminish the energy requirements considerably.
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