Rotor blade with swivelling air flow control flap

Details Rotor blade with swivelling air flow control flap Rotor blade with swivelling air flow control flap

1998-11-04

2000-11-28

Lopez, F. Daniel

Fluid reaction surfaces (i.e., impellers)

With means moving working fluid deflecting working member...

Cyclic movement of member or part

416 23, 244 75R, 244 1725, B64C 900

Patent

active

061526924

ABSTRACT:
The blade includes at least one trailing edge swivelling air flow control flap, swivelling on the blade around an axis directed substantially along the span of the blade and the control flap, the swivelling of the control flap being controlled by an actuator gear mounted on the blade and including an actuator. The actuator includes a first rotating motor, the rotational speed of which corresponds to a frequency of swivelling of the control flap, and a second rotating motor which moves relative to each other two eccentrics mounted in series around the shaft of the first motor, the second motor rotating with one of the eccentrics, and a ring freely rotating around the eccentrics is driven in movements transmitted by a flexible arm transmission to the control flap. The frequency and amplitude controls of the swivelling of the air flow control flap are thus separated.

REFERENCES:
patent: 4426911 (1984-01-01), Robinson et al.
patent: 4431148 (1984-02-01), Mouille
patent: 5314308 (1994-05-01), Reed, III
patent: 5387083 (1995-02-01), Larson et al.
patent: 5639215 (1997-06-01), Yamakawa
patent: 5730581 (1998-03-01), Buter
patent: 5884872 (1999-03-01), Greenhalgh

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