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US 2025/0059944 A1Published application
Family of airfoils for fluid turbine with passive-pitching rotor blades
OwnerVincent Loccisanoinventor
Life of this patent
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Abstract
A fluid turbine has a rotor-blade design with aerodynamic pitch control. A high-operating lift coefficient, combined with high-operating efficiency as a ratio of lift over drag, provides sufficient pitching moment to pitch the rotor blade in excessive winds. The aerodynamic properties of the airfoil design comprise laminar and turbulent flow effects that provide roughness insensitivity. Some embodiments comprise hybrid actuated-self-pitch control.
Claims13
An airfoil for a rotor blade comprising:
- a lift surface extending from a leading edge to a trailing edge;
- and
- a pressure surface extending from said leading edge to said trailing edge below said lift surface;
- and
- a chord extending from said lift surface and said pressure surface at said leading edge to said lift surface and said pressure surface at said trailing edge;
- and
- a thickness between said lift surface and said pressure surface that is between 17% and 19% of said chord;
- wherein
- said airfoil provides a relatively high lift coefficient and a relatively high pitch-moment coefficient.
6 more elements
Dependencies are inferred from the claim text.