Investigation of power requirements for ice prevention and cyclical de-icing of inlet guide vanes with internal electric heaters

Von Glahn, Uwe Blatz, Robert E
naca-rm-e50h29
December 1950


An investigation was conducted to determine the electric power requirements for turbojet-engine inlet guide vanes with continuous heating and with cyclical de-icing for a range of icing conditions. Minimum total power requirement for continuous heating and cyclical de-icing are presented in terms of average surface datum temperature. An analysis is included to extend the experimentally obtained continuous heating data to vane sizes and icing conditions other than those investigated. Cyclical de-icing provides a total power saving as high as 79 percent over continuous heating for a typical engine installation. Heat-on periods of 10 seconds or less with heat-off periods of 60 seconds are recommended for cyclical de-icing.

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