Helicopter

A helicopter (1) comprising:

• at least one motor member (3) comprising an output shaft (12) and a first stator (11, 29) rotatably supporting said output shaft (12) around a first axis (C);
• a main rotor (4) adapted to provide the lift necessary for the support and the thrust necessary for the movement of the helicopter (1) itself;
• a transmission (7) interposed between said motor member (3) and said main rotor (4);
• said transmission (7) comprising, in turn, an input shaft (21) rotatable around a second axis (D) and a second stator (20, 30) rotatably supporting said input shaft (21) around said second axis (D);
• and
• a joint (35) interposed between said first and second stator (11, 29;
• 20, 30), angularly fixed with respect to said first axis (C), and configured to allow an inclination between said first and second stator (11, 29;
• 20, 30) in at least one plane parallel to said first axis (C);
• characterized in that said joint (35) comprises a first corrugated element (36) made of an elastically deformable material, interposed between said first and second stator (11, 29;
• 20, 30), and adapted to allow said inclination through elastic deformation;
• wherein said first corrugated element (36) extends along a third axis (E);
• said first corrugated element (36) being torsionally rigid parallel to said third axis (E) and flexurally yielding in an elastic way in said at least one plane parallel to said first axis (C) and also to said third axis (E);
• said joint (35) comprising at least a second axial corrugated element (69, 70) coupled to said first corrugated element (36);
• the second corrugated element (69, 70) being shaped like a rib (69, 70) elongated parallel to said third axis (E) and eccentric with respect to said third axis (E).