| 摘要 |
Vertical take-off aircraft ( 1 ) has first ( 4 ) and second ( 17 ) lifting mechanism (eg helicopter-type rotors, jets, turboprops) arranged in tandem, either above or outboard of ends ( 2, 3 ). Lifting mechanisms ( 4, 17 ) are independently tiltable, in multiple directions, by hydraulic rams ( 11, 13, 14, 16, 24, 26, 27, 29 ) to manoeuvre aircraft ( 1 ). In particular first lifting mechanism ( 4 ) may be tilted in the opposite transverse direction to second lifting mechanism ( 17 ) so as to alter direction of flight. First lifting mechanism ( 4 ) may be tilted by further hydraulic rams so that its rotor lies in a vertical plane for forward flight of aircraft ( 1 ).
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