ANTITORQUE ROTOR AND HELICOPTER WITH SAID ROTOR Russian patent published in 2013 - IPC B64C27/04 

FIELD: transport.

SUBSTANCE: invention relates to aircraft engineering, particularly, to helicopter antitorque rotors. Antitorque rotor 3 has opposed leading edge 8 and trailing edge 9 extending the blade lengthwise axis B. Trailing edge 9 interacts with airflow behind leading edge 8. Blade 6 has two opposed surfaces 12, 13 extending between said leading and trailing edges and root part 14a extending from first end 10, inner with respect to blade rotational axis A, to second end 11. Root part 14a dissected by plane perpendicular to leading edge 8 and trailing edge 9 features profile G asymmetric relative to chord P connecting leading edge 8 and trailing edge 9. Vertices of blade first ends are located at the distance from rotational axis making 10% to 25% of maximum spacing between rotational axis and vertices of blade second ends.

EFFECT: better aerodynamic efficiency, reduced load at blades and control gear.

15 cl, 13 dwg