Automatically controlled wind propeller and tower shadow elimina

Details Automatically controlled wind propeller and tower shadow elimina Automatically controlled wind propeller and tower shadow elimina

1979-08-27

1982-01-12

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

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

Sectional, staged or nonrigid working member

416 11, 416 41, 416133, F03D 704

Patent

active

043102840

ABSTRACT:
A propeller hub carries pivotally-mounted blades that are linked to a spring-loaded collar on the propeller shaft for automatic coning and feathering under predetermined high velocity movement along the propeller shaft to change the blade pitch angle during low wind velocity conditions. An airfoil support mounts a propeller shaft and turns therewith to reduce tower shadow effects. This is called a "down-wind system" meaning the propeller is behind the tower and causes the assembly to rotate into the wind without a tail vane.

REFERENCES:
patent: 2094941 (1937-10-01), Burkhartsmeier
patent: 2516576 (1950-07-01), Jacobs
patent: 4066911 (1978-01-01), Sarchet
patent: 4183715 (1980-01-01), Ducker

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