Piezoelectric deicing device

Details Piezoelectric deicing device Piezoelectric deicing device

1984-08-07

1985-10-08

Barefoot, Galen L.

Aeronautics and astronautics

Aircraft structure

Ice prevention

29 2535, 310324, B64D 1518

Patent

active

045455538

ABSTRACT:
A fast voltage pulse is applied to a transducer which comprises a composite of multiple layers of alternately polarized piezoelectric material. These layers are bonded together and positioned over the curved leading edge of an aircraft wing structure. Each layer is relatively thin and metallized on both sides. The strain produced in the transducer causes the composite to push forward resulting in detachment and breakup of ice on the leading edge of the aircraft wing.

REFERENCES:
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patent: 3519229 (1970-07-01), Son Gullberg
patent: 3809341 (1974-05-01), Levin et al.
patent: 3943614 (1976-03-01), Yoshikawa et al.
patent: 4283461 (1981-08-01), Wooden et al.
patent: 4297394 (1981-10-01), Wooden et al.
patent: 4385255 (1983-05-01), Yamaguchi et al.
Bloomfield et al., "Piezo- and Pyroelectricity in Poly (Vinylidene Fluoride)", NAV Res. Rev., vol. 31, No. 5, May 1978.

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