FIELD: transport.
SUBSTANCE: invention relates to aircraft engineering, particularly, to rotorcraft rotor blade. Blade comprises main body 14, flexible in shear in direction of blade profile chord T, flexurally rigid top and bottom skins 16, 18 enveloping said main body, unsupported and hinge free rear deformable zone 22 arranged in blade read edge zone, and, at least, one drive 32, 32' arranged in main body 14. Said drive 32, 32' is arranged to initiate main body flexure motion and deformation of rear deformable zone 22 caused by main body flexure, distortion of said top and bottom skins that results in deviation of profile tail in direction opposite flexure motion. Filler flexible in shear may be arranged inside blade hollow body. Baffles 30 may be flexible in shear and bending. Said drive 32, 32' may be arranged on baffle 30 or on skins 16, 18. Said drive 32, 32' represents drive of flexure.
EFFECT: smooth blade deformation in direction of profile chord and blade span.
23 cl, 11 dwg
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