Articulated blade with automatic pitch and camber control

Details Articulated blade with automatic pitch and camber control Articulated blade with automatic pitch and camber control

1991-09-23

1993-03-16

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

With means moving working fluid deflecting working member...

Cyclic movement of member or part

416 17, 416119, 416132B, F03D 300

Patent

active

051939789

ABSTRACT:
An articulated blade whose forward vane section is directly pitched by relative fluid flow upon it, and whose rear deflector section deflects the flow upon it. A control arm, through parallelogram linkage, maintains the deflector in parallel orientation with it, thus cambering the blade when it pitches. Fluid is deflected always in a direction controlled by orientation of the control arm. High lift-drag ratios are possible at high angles of attack. The blade can be used to extract power from the fluid, or for propulsion through a fluid.

REFERENCES:
patent: 3129769 (1964-04-01), Hofbauer et al.
patent: 3877836 (1975-04-01), Tompkins
patent: 4299537 (1981-11-01), Evans
patent: 4316700 (1982-02-01), Schramm
patent: 4383801 (1983-05-01), Pryor
patent: 4415312 (1983-11-01), Brenneman
patent: 4776762 (1988-10-01), Blowers, Sr.

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