Fluid reaction surfaces (i.e. – impellers) – Articulated – resiliently mounted or self-shifting impeller... – Sectional – staged or nonrigid working member
Patent
1982-04-22
1983-12-27
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
Articulated, resiliently mounted or self-shifting impeller...
Sectional, staged or nonrigid working member
416119, 416227A, F03D 706
Patent
active
044228252
ABSTRACT:
A mechanical sail including a rotatable mast, the mast including a top vane mount and a bottom vane mount, the mounts being spaced from each other on the mast and rotatable therewith, a series of rotatable vanes spaced from and surrounding the mast and supported by and between the mounts, cam operators extending between the mounts and connected to the vanes for controlling the rotation of the vanes, a first controller associated with the mast below the bottom vane mount for controlling the cam operators, the first controller being movable vertically with respect to the mast, a second controller for moving the first controller vertically with respect to the mast, the vanes being flexible and bowed outwardly, the bottom vane mount being movable with respect to the mast and connected to the second controller whereby when the second controller is operated, the bottom vane mount will move toward the top vane mount causing the vanes to bow outwardly at a desired arc and whereby when the first controller is moved, the vanes are caused to rotate to the desired angle of attack with respect to wind velocity and direction. When the sail is connected to a motor drive, the vessel may be driven forward or rearward depending on the angle of attack of the vanes through 180.degree..
REFERENCES:
patent: 1835018 (1931-12-01), Darrieus
patent: 3918839 (1975-11-01), Blackwell et al.
patent: 4082479 (1978-04-01), Rangi et al.
patent: 4142822 (1979-03-01), Herbert et al.
patent: 4264279 (1981-04-01), Dereng
patent: 4281965 (1981-08-01), Stjernholm
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