Asymmetrically changing rotating blade shape (ACRBS)...

Details Asymmetrically changing rotating blade shape (ACRBS)... Asymmetrically changing rotating blade shape (ACRBS)...

2006-11-03

2010-11-30

Look, Edward (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Sustained ancillary movement of rotary working member

Responsive to fixed actuator

C416S13200B, C416S159000

Reexamination Certificate

active

07841831

ABSTRACT:
A propeller includes a plurality of propeller blades. Each blade has an adjustable drag coefficient. A plurality of actuators adjusts the drag coefficients of the propeller blades. A controlling unit controls the plurality of actuators such that the drag coefficients of each propeller blade is adjusted according to a pattern that is dependent upon the rotational angle of the particular propeller blade so that the drag of each propeller blade is maximized at the same point through a course of revolution and minimized throughout the remainder of that revolution.

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