Tilt-rotor aircraft changeable between vertical lift and forward flight modes

摘要

An aircraft 1 with a tilting rotor arrangement 3, which may be mounted on or around the longitudinal centre line of the aircraft 1. The aircraft 1 may comprise wings 4 for sustained forward flight. Inboard portions of the wings 9 and 10 may be moveable so as to present leading edges to the downdraft of the rotor 3 when in the vertical lift mode. The rotor arrangement 3 may comprise a plurality of rotor blades 11, and may be contra-rotating. There may be at least one rotor arrangement 3. The rotor arrangement 3 may be mounted in front of or behind the fuselage 2, or optionally below the fuselage 2 for vertical lift. The aircraft 1 may be of a twin-boom layout (figs 5- 8), with the rotor arrangement 3 being disposed between the booms (22, fig 5), the fuselage (2, fig 5) and the empennage (24, fig 5).