Wind powered apparatus
This patent describes an apparatus for extracting energy from a moving fluid of the class that includes an elongated member mounted for rocking movement between limiting positions about a pivotal axis and a wing pivotally mounted on the member about a wing axis spaced from and substantially parallel to the pivotal axis for movement between positive and negative angles of attack with respect to ambient fluid flow for respective urging pivotal movement of the member in the first and second direction. The improvement described here consists of the wing being free for oscillatory movement about the wing axis and a control panel pivotally mounted on the wing for movement between first and second positions relative thereto that are respectively operative to subject the wing to oppositely directed moments about its free oscillatory wing axis whereby the wing is urged respectively towards its positive and negative angles of attack in response to the control panel being disposed at its first and second positions, the wing. The control panel and the wing axis are so constructed and arranged to obtain a torsion-free mode of operation, and control means actuated by oscillation of the member for reversing the position of the control panel in response to the member approaching either of its limiting positions while otherwise opposing change of control panel position. The direction of rocking movement of the member is reversed solely when the member approaches its limiting positions.
- Assignee:
- Solartech Energy and Research Corp., Topeka, KS
- Patent Number(s):
- US 4595336
- OSTI ID:
- 5665815
- Resource Relation:
- Patent File Date: Filed date 17 Aug 1984
- Country of Publication:
- United States
- Language:
- English
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