ROTOR BLADE OF WIND-DRIVEN POWER PLANT Russian patent published in 2020 - IPC F03D1/06 

FIELD: aviation.

SUBSTANCE: invention relates to rotor blade of aerodynamic rotor of wind-driven power plant. Rotor blade of aerodynamic rotor of wind-driven power plant with rotation axis of rotor and outer radius, containing blade shank for attachment to rotor hub, end part of blade turned from blade root, longitudinal axis of blade passing from blade root to blade end part, blade leading edge directed forward relative to direction of rotor blade movement, blade rear edge directed backward relative to direction of rotor blade movement and profile section varying along blade longitudinal axis, wherein each cross-section of the profile has a profile chord extending from the leading edge of the blade to the rear edge of the blade, and each profile chord has an installation angle as an angle to the rotor plane, wherein this angle of installation from the blade root to the blade end portion first decreases in the inner area of the blade facing the blade root, increases again in the middle area of the blade and decreases again in the area of the end part of the blade facing the end part of the blade, wherein the installation angle increases in the middle region of the blade having a relative radius in range of 35 % to 60 % relative to the outer radius.

EFFECT: invention is aimed at optimization of weight and characteristics of flow separation for rotor blades.

12 cl, 6 dwg