Transverse-axis torque turbine

A transverse-axis turbine rotor assembly driven about an axis by a fluid flow, said assembly comprises:

• a support and bearing structure,
• a rotor, mounted on said support and bearing structure facilitating rotation about the axis, said rotor including:
• a plurality of shaped surfaces symmetrically disposed about the axis and a plurality of interconnecting joints interconnecting said plurality of shaped surfaces forming a rotor shell exposed to said fluid flow, having a surface flow along said shaped surfaces,
• a plurality of rotor cross-sections of said shaped surfaces along the axis, each on a plane perpendicular to the axis, wherein:
• each said plurality of shaped surfaces following an s-shaped curve on said plurality of rotor cross-sections with said s-shaped curve consisting of a concave section and a convex section and said concave section having a concave outer end, when rotated about the axis, inscribes a first circle with said concave outer end being tangent to said first circle, and
• each said convex section having a convex outer end, when rotated about the axis, inscribes a second circle with said convex outer end being tangent to said second circle, and each said interconnection joint joins a said s-shaped curve to an adjacent s-shaped curve wherein each said s-shaped curve's said concave outer end is joined to the said convex outer end of said adjacent s-shaped curve, such that said plurality of s-shaped curves forms a perimeter about the axis on said rotor cross-section, and
• said s-shaped curves each having a reference line, starting at the axis and ending at said concave outer end, intersecting said s-shaped curve at a dividing point dividing said concave section from said convex section, and
• said s-shaped curves are further defined by use of a perpendicular line on said rotor cross-section, with the said perpendicular line being perpendicular to the said reference line and passing through a distant point on said concave section, where said distant point is the point on said concave section that is most distant from said reference line, and defining a reference point as being the point where said perpendicular line intersects said reference line, wherein:
• said s-shaped curve having a geometry that is constrained by:
• a quotient D3/D2, where D3 is the distance between said reference point and said dividing point and D2 is the distance between said concave outer end and said dividing point, being greater than 0.48 and less than 0.64, and
• a quotient D4/D2, where D4 is the distance between said most distal point and said reference point, being greater than 0.30 and less than 0.44, and a quotient D4/D1, where D1 is the distance between said concave outer end and said convex outer end, being greater than 0.11 and less than 0.22, thereby:
• as each said joined outer end points directly into said fluid flow, a said shaped surface redirects its said surface flow directly against said fluid flow at said joined outer end.