| 主权项 |
1. A convertiplane (1) comprising:
a pair of semi-wings (3); at least one first rotor (4) comprising a shaft (6) which may rotate about relative first axis (B) and tilt about a second axis (C) together with said first axis (B) with respect to said semi-wings (3) between a helicopter mode and an aeroplane mode; said first axis (B) being, in use, transversal to a longitudinal direction (A) of said convertiplane (1) in said helicopter mode and being, in use, substantially parallel to said longitudinal direction (A) in said aeroplane mode; characterized by comprising: at least one first actuator (52), which is adapted to control the tilting of said first rotor (4) about relative second axis (C); a flight control system (49) for controlling said actuator (52); an electrical power storage device (70; 81, 82); and at least one electrical machine (71); said actuator (52) comprising, in turn: a fixed part (53); a ram (54), which may slide parallel to said longitudinal direction (A) relative to said fixed part (53); a rod (55) having a first end (56) hinged to said ram (54) about an axis parallel to said second axis (C), and a second end (58) which integrally tilts with said rotor (4); a control unit (51), which controls the movement of said ram (54) parallel to said longitudinal direction (A) and is controlled by control system (49) on the basis of a plurality of flight and mission parameters; said electrical machine (71) comprising, in turn: a stator (72) which is electrically connected to said storage device (70; 81, 82); and a second rotor (73) which is operatively connected to a shaft (6) of said first rotor (4); said electrical machine (71) being operable as: an electric motor for driving in rotation said first rotor (4) by using the electrical power stored in said storage device (70; 81, 82); or as an electrical power generator for re-charging said storage device (70; 81, 82) by causing the rotation of said first rotor (4) under the action of a wind current, when said convertiplane (1) is on ground in said aeroplane mode and said storage device (70; 81, 82) needs to be re-charged; said first rotor (4) being tiltable about said second axis (C) in a direction facing the wind current, when said convertiplane (1) is on ground in said aeroplane mode and said storage device (70; 81, 82) needs to be re-charged; said wind-current driving in rotation said shaft (6) of said first rotor (4), which, in turn, causes the rotation of said second rotor (73) of said electrical machine (71) relative to said stator (72), when said convertiplane (1) is on ground in said aeroplane mode; said flight control system (49) comprising detecting means for detecting said direction facing the wind and controlling said control unit (51) of said actuator (52), so as to tilt said first rotor (4) in said direction facing the wind, when said convertiplane (1) is on ground in said aeroplane mode. |
