METHOD FOR STATIC ADJUSTMENT OF IN-TRACK CONDITION OF HELICOPTER MAIN ROTOR BLADES Russian patent published in 2023 - IPC G01M1/12 B64F5/60 

FIELD: helicopter engineering.

SUBSTANCE: invention relates to methods for statically adjusting the rotor blades of a helicopter. The method for statically adjusting the main rotor blades includes preliminary measurements of the position of the trailing edge along the cross-sectional span of the blade. Deviations in the position of the trimmer plates of the blade are measured using a device for measuring the bend of the trimmers. The middle of the thickness of the edge of the blade and the trimmer plate is chosen as the edge line, and the “0” scale value of the said device is taken as the reference point. The obtained values are entered into tables. Based on the obtained values, diagrams of the actual deviations of the sections of sections and trimmer plates are constructed. The diagrams are analyzed and the optimal position of the blades of one set of main rotor blades relative to each other in the main rotor cone is modeled. The values obtained as a result of the simulation are entered into the table. The required amount of bend of the trimmer plates is determined.

EFFECT: reduction in helicopter vibrations in flight at different speed modes, possibility of increasing the helicopter speed parameters.

5 cl, 10 dwg