Valvular sail power plant
Patent
·
OSTI ID:6247480
A vertical-axis feathering windmill is described comprising: (a) at least one open framework vane; (b) at least one flexible sheet having at least one vertical edge, the sheet rotatably held on the framework along one edge; (c) spar means for each sheet, comprising resilient horizontal members attached is spaced equidistant relationship along the vertical length of the sheet and attached so that the sheet is able to billow between spars; and (d) resilient means between the sheet and spar combination and its corresponding framework vane biasing the sheet and spar combination towards the framework such that wind on the leeward side of the windmill adds to its rotation. The sheet and spar combination otherwise are pivotable by the wind.
- Assignee:
- NOV; EDB-87-155270; NOV-87-074139
- Patent Number(s):
- US 4684817
- OSTI ID:
- 6247480
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
17 WIND ENERGY
170602* -- Wind Energy Engineering-- Turbine Design & Operation
CONTROL EQUIPMENT
DESIGN
EQUIPMENT
FLEXIBILITY
FLOW REGULATORS
MACHINERY
MECHANICAL PROPERTIES
MOTION
OPERATION
ROTATION
SHEETS
TENSILE PROPERTIES
TURBINES
TURBOMACHINERY
VALVES
VANES
VERTICAL AXIS TURBINES
WIND TURBINES
170602* -- Wind Energy Engineering-- Turbine Design & Operation
CONTROL EQUIPMENT
DESIGN
EQUIPMENT
FLEXIBILITY
FLOW REGULATORS
MACHINERY
MECHANICAL PROPERTIES
MOTION
OPERATION
ROTATION
SHEETS
TENSILE PROPERTIES
TURBINES
TURBOMACHINERY
VALVES
VANES
VERTICAL AXIS TURBINES
WIND TURBINES