Gyroplane take-off rotor

Gyroplane take-off rotor for shortening the take-off run of a gyroplane,

• wherein the gyroplane comprises two blades (1), two blade holders (2), for coupling the blades (1) to the rotor, and a prelauncher device linked to the rotor via a transmission;
• and
• wherein the rotor comprises a mechanism which can be coupled to the transmission with the prelauncher and is operable by said prelauncher;
• the rotor being characterized in that the mechanism comprises:
• a linear actuator (3), linked to and operable by the prelauncher;
• a tie rod (4), linked at one end to the linear actuator (3);
• a vertical bar (5), linked at one lower end to the other end of the tie rod (4);
• a rocker arm (6) hinged at an upper end of the vertical bar (5);
• two rods (7) hingedly linked to the respective ends of the rocker arm (6) and extending downwards;
• and
• a elastic element (8) for holding the blade holders (2) and the blades (1) in a flying position with a high angle of attack;
• wherein the rotor allows a temporary reduction of the angle of attack of the blades (1) to shorten the take-off stroke.