Blade with shielding for enhanced protection against lightning,

Details Blade with shielding for enhanced protection against lightning, Blade with shielding for enhanced protection against lightning,

1996-11-25

1999-01-26

Kwon, John T.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Having wear liner, sheathing or insert

F04D 2934

Patent

active

058631810

ABSTRACT:
An apparatus for shielding a blade against lightning includes a conducting component forming a leading edge glove and a conducting cover, for protecting the blade tip across its entire chord. Mechanical devices, such as screws and rivets with protruding shapes, in addition to some gluing, fix the cover on the composite structure of the blade, and are earthed by the cover, forming points where lightening can enter or exit, protecting the surrounding composite structure of the blade against damage. At least the cover may have a suction face arm and a pressure face arm of different dimensions at least in the direction of its span. When the blade is mounted on a member for linking to the hub, electrical continuity with this member and the hub is provided

REFERENCES:
patent: 1793775 (1931-02-01), Charavay
patent: 1842178 (1932-01-01), Kempton
patent: 3923421 (1975-12-01), Carter
patent: 4944655 (1990-07-01), Merz

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