METHOD OF OPTIMISING NOISE PRODUCED BY AUXILIARY ROTOR AND CHARACTERISTICS OF ROTORCRAFT AND ROTORCRAFT Russian patent published in 2016 - IPC B64C27/82 B64C13/16 

FIELD: aircraft engineering.

SUBSTANCE: invention relates to aircraft engineering, particularly to rotorcraft, and to methods of minimising noise of tail rotor. Rotorcraft (1) is located along first front-rear plane (P1), separating first side (6) from second side (7) of rotorcraft (1). Said rotorcraft (1) is equipped with at least one lifting rotor (5), auxiliary rotor (10) and at least one airfoil (25). Said rotorcraft (1) comprises processing unit (30) connected to movement means (35), turning said airfoil (25), wherein processing unit (30) is connected to first system (41) for measuring current parameters of speed (V) of rotorcraft and to second system (42) for measuring current parameters of power (W) of said power unit (90) to adjust angle of rotation of airfoil.

EFFECT: enabling minimisation of noise of tail rotor, and fuel consumption.

17 cl, 7 dwg