Wind turbine blade construction

Details Wind turbine blade construction Wind turbine blade construction

1986-08-25

1988-03-01

Bennet, Henry A.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Formed with main spar

416230, 416218, B64C 1120

Patent

active

047282630

ABSTRACT:
A strong, lightweight blade provided for use on wind turbines utilizes an interior reinforcing strut which extends part-way out the blade and consists of telescoped steel pipes welded to one another and mounted at their root ends to a steel cuff. A carbon graphite spar slips over the telescoped tubes and inside the cuff and extends radially outwardly substantially to the end of the blade. A rigid skin which is airfoil-shaped in all of its cross-sections attaches to the spar and spans from the root of the spar to the distal tip of the blade, defining the wind-driven surfaces of the blade.

REFERENCES:
patent: 3168144 (1965-02-01), Capowich et al.
patent: 3476625 (1969-11-01), Slivinsky et al.
patent: 4260332 (1981-04-01), Weingart et al.

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