Aircraft de-icing

Details Aircraft de-icing Aircraft de-icing

1975-09-08

1977-07-19

Blix, Trygve M.

Aeronautics and astronautics

Aircraft structure

Ice prevention

219209, 340234, B64D 1514

Patent

active

040364577

ABSTRACT:
In a method for de-icing aircraft surfaces by means of a plurality of electrical resistance heaters which are sequentially supplied with heating current, the delivery of current to each heater being effectuated during a succession of cycles each constituted by a heating period during which heating current is supplied to the heater and a nonheating period during which no current is supplied to the heater, thereby controlling the average current supplied to the heater, the range of ice accumulation rates to which the de-icing process can adjust is enlarged by controlling the duration of the heating periods in dependence on the temperature at the resistance heaters and by controlling the duration of the nonheating periods in dependence on the water content of the atmosphere surrounding the aircraft.

REFERENCES:
patent: 3287974 (1966-11-01), Ciemochowski
patent: 3453415 (1969-07-01), Hermes et al.

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