GYROPLANE ROTOR BLADE FOR CREATION OF LIFTING FORCE DUE TO AUTOROTATION Russian patent published in 2020 - IPC B64C27/473 B64C27/02 

FIELD: aviation.

SUBSTANCE: invention relates to design of gyroplane rotor blades, which creates lifting force due to autorotation. Blade comprises inner section (9) of profile on side of the root, which has first profile (21c), main section (10) of profile on side of tip, which has second profile (21e) different from first profile (21c), and profile depth curve (22), which decreases monotonously in longitudinal direction of blade (1) of gyroplane rotor from section of blade root (2) in direction of tip (3) of blade. Blade (1) of gyroplane rotor has twist having twist curve (23), which decreases monotonically from blade segment (2) in direction of blade tip (3), wherein twist curve (23) has varying inclination in inner section (9) of profile and/or main section (10) of profile, and, consequently, curved curve (23) is bent along concave trajectory in this section (9, 10).

EFFECT: reduced drag.

13 cl, 4 dwg, 3 tbl