tension wheel in a rotor system for water and wind turbines.

A system turbine rotor fluid flow comprising: a hub (8) mounted on a shaft, a plurality of blades (108) rotor, and a tension wheel, the tension wheel comprising a frame (3) of rings mounted on the hub (8) with a plurality of spokes (7), wherein the structure (3) of rings comprises a ring (107) outside and a ring (112) inner interconnected, and the blades (108) rotor extending outwardly from the frame (3) of rings so that the blades (108) can tilt, characterized in that the blades (108) of the rotor extending through the rings (107, 112) outside and inside inward surrounded by the structure (3) of hoops such that the inclination control of the blades (108) of the rotor can be retained in the hub (8) area.