PROPELLER BLADE WITH AERODYNAMIC SURFACE CONTROLLED GEOMETRY Russian patent published in 2025 - IPC B64C11/20 B64C27/473 

FIELD: aviation.

SUBSTANCE: invention relates to production of propeller blades with controlled geometry of aerodynamic surface. Blade comprises bearing elastic top and bottom skins of the blade, piezoelectric actuators on the top and/or bottom skins, made in form of film piezoelectric actuators from piezoelectric layer with interdigital surface electrodes with outputs for connection of control electric voltage. Piezoelectric actuators are made in form of piezoelectric cells with variable values of orientation angle of interdigital electrodes to base of cell, wherein piezoelectric cells are arranged on skin surfaces with preset orientation of their interdigital electrodes to cell bases and/or skin contour.

EFFECT: improved effect (quality) of controlling the blade aerodynamic surface geometry by means of structural enhancement and increase accuracy of piezoelectric actuator installation with required orientation of interdigital electrodes near skin circuit and/or in vicinity of adjacent piezoelectric actuators.

3 cl, 2 dwg