Helicopter blade ice protection systems

Details Helicopter blade ice protection systems Helicopter blade ice protection systems

1977-06-13

1978-12-26

Barefoot, Galen L.

Aeronautics and astronautics

Aircraft structure

Ice prevention

B64D 1510

Patent

active

041312503

ABSTRACT:
An external system installed on a helicopter to spray a freezing point depressant fluid onto the main rotor blade of a single rotor helicopter to prevent the collection of ice when flying through icing weather. Actuation of this ice protection system will cause a pump to force a glycerine-alcohol mixture through a series of fixed nozzles to create a spray of freezing point depressant. The main rotor blade will move through this spray and be coated, thus preventing the collection of ice on the blade. Such protection is of vital importance to all-weather helicopter operations as experience has shown that the collection of ice on the rotor blades of helicopters is a safety of flight problem.

REFERENCES:
patent: 1720140 (1929-07-01), O'Connor
patent: 1828613 (1931-10-01), Norton
patent: 2412846 (1946-12-01), Taylor
patent: 2576487 (1951-11-01), Stanley
patent: 3936018 (1976-02-01), Barlow

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