Balanced stress vertical axis wind turbine

Details Balanced stress vertical axis wind turbine Balanced stress vertical axis wind turbine

1983-05-13

1985-06-25

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Articulated, resiliently mounted or self-shifting impeller...

Sectional, staged or nonrigid working member

416119, 416DIG8, F03D 306

Patent

active

045251240

ABSTRACT:
Curved airfoils are mounted on members attached to a vertical shaft. The ends of the airfoils point outward from the shaft. The members are attached to the upper and lower sections of the airfoils and converge as they approach the shaft. This minimizes the shaft length above the turbines upper most bearing and provides a balanced condition that distributes forces in such a manner which reduces airfoil stress.

REFERENCES:
patent: 1820529 (1931-08-01), Darrieus
patent: 4050246 (1977-09-01), Bourquardez
patent: 4130380 (1978-12-01), Kaiser
patent: 4204805 (1980-05-01), Bolie
patent: 4247253 (1981-01-01), Seki et al.
patent: 4264279 (1981-04-01), Dereng
patent: 4293279 (1981-10-01), Bolie
patent: 4329116 (1982-05-01), Ljungstrom
patent: 4421458 (1983-12-01), Allan et al.

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