Wind turbine

Details Wind turbine Wind turbine

1986-04-25

1987-12-01

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

With control means responsive to non-cyclic condition...

Control of drive brake or clutch

416 87, 416169R, F03D 704

Patent

active

047101016

ABSTRACT:
A wind turbine for a wind turbine electrical generator set in which movable nose portions are located at or adjacent the leading edge of the blade and at or adjacent the tip of the blade but is dispaceable purely longitudinally of the blade, i.e. radially outwardly of the blade, from the normal retracted position, in which the portion contributes to the lift of the aerofoil section, to an advanced position in which drag is produced, to prevent unwanted increase in the speed of the rotation of the rotor.

REFERENCES:
patent: 1757667 (1930-05-01), Hesse
patent: 2058500 (1936-10-01), Plucker
patent: 2074149 (1937-03-01), Jacobs
patent: 2076520 (1937-04-01), Swanson
patent: 2135887 (1938-11-01), Fairey
patent: 2148921 (1939-02-01), Allen
patent: 2437659 (1948-03-01), Albers
patent: 2485543 (1949-10-01), Andreau
patent: 4180372 (1979-12-01), Lippert
patent: 4374631 (1983-02-01), Barnes
patent: 4504192 (1985-03-01), Cyrus et al.
patent: 4557666 (1985-12-01), Baskin et al.

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