Wind turbine

A wind turbine (A) comprising:

• a rotation axis (Z, Y) configured to be positioned in space in any way and a plurality of blades (1) constrained to said axis (Z, Y),
• wherein each one of said blades (1) is indirectly constrained to said axis (Z, Y) through one or more radial arms (3) that are integral with said axis (Z,Y),
• wherein said blades (1) are configured to translate in a radial direction with respect to said axis (Z, Y) during rotation of the blades (1),
• wherein, by varying a distance of each of said blades (1) from said axis (Z, Y), a radius of a rotor varies as does a main inertia of said wind turbine, from a minimum value at startup to higher values, such to limit a decrease and favor an increase in speed of the rotation, respectively in case of a decrease or increase of transitional winds,
• wherein each one of said blades (1) is constrained to the corresponding arms (3) to counteract said radial translation of the blades (1) at least in the direction away from said axis (Z, Y), said blades being constrained by one or more elastic members or springs (13) coaxially inserted in said arms (3) and being directly or indirectly constrained to said arms (3) with one end (132) and to said blade (1) with an opposite end (131),
• wherein each one of said blades (1) translates in a radial direction along the respective arms (3) rolling on rails or grooves or slits (2) obtained in the arms (3), and
• wherein each blade (1) comprises:
• at least one hole (8) for insertion of the arm (3), into a shape matching a shape of the arm (3) with a play (9) along a circumferential direction;
• a frame (5) mounted in said hole (8) of said blade (1) and integral with the blade (1);
• and
• at least one main wheel (4) configured to rotate in said rails (2) or grooves or slits inside said arm (3) and mounted on said frame (5).