COMBINATION VERTICAL TAKE-OFF AND LANDING ROTARY-WING AIRCRAFT AND METHOD OF CONVERSION OF ROTARY-WING AIRCRAFT INTO AEROPLANE CONFIGURATION Russian patent published in 1996 - IPC

FIELD: aeronautical engineering. SUBSTANCE: two versions of combination vertical take-off and landing aircraft have all members of aircraft and helicopter; they are made according to single-rotor configuration and are provided with steering rotor, tractor propeller and two-bladed rotor; two-bladed rotor is retracted in flight. They differ in position of main rotor, retraction system and arrangement of transmission systems. Conversion of vertical take-off and landing aircraft from rotary-wing configuration into aeroplane configuration is effected in horizontal flight by stopping the main rotor in position perpendicular to direction of flight and drawing together its blades with wing due to which blades and wing form single aerodynamic lifting surface with common wing profile or form lifting surface, type wing with slat. EFFECT: enhanced reliability. 4 cl, 13 dwg