Aeronautics and astronautics – Aircraft structure – Ice prevention
Patent
1991-12-13
1993-09-14
Barefoot, Galen
Aeronautics and astronautics
Aircraft structure
Ice prevention
244134C, B64D 1510
Patent
active
052441687
ABSTRACT:
The use of potentially toxic deicing fluids can be substantially reduced, sometimes by as much as an order of magnitude, by selectively providing air entrained deicing fluid in a air jet or blast. The delivery parameters, e.g. the flow rate of deicing fluid and the entraining air are adjusted according to the specific snow or icing conditions on the aircraft surface on each application. A choice of deicing fluids are available, typically Type I and Type II deicing fluids. Deicing fluids may be heated or unheated as determined by the operator choice according to icing conditions. The type and amount of fluid is mixed within a mixing nozzle attached to a depending operator bucket connected to a boom on a mobile vehicle. The flow rate and pressure of heated or unheated pressurized air mixed with the deicing fluid is also adjusted according to icing conditions. The air entrained deicing fluid is then applied to the aircraft surface according to any one of a plurality of spray patterns determined according to icing conditions. The same or a separate nozzle is also employed to apply a fine atomizing mist of Type II fluid to the clean surface of the aircraft for anti-icing after a deicing treatment.
REFERENCES:
patent: 4032090 (1977-06-01), Thornton-Trump
patent: 4842005 (1989-06-01), Hope et al.
patent: 4986497 (1991-01-01), Susko
patent: 5028017 (1991-07-01), Simmons et al.
patent: 5096145 (1992-03-01), Phillips et al.
patent: 5104068 (1992-04-01), Kulla et al.
Barefoot Galen
Dawes Daniel L.
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