DEVICE FOR STATIC BALANCING OF HELICOPTER ROTOR BLADES

摘要

FIELD: measurement technology; check of static balancing of structures; balancing of main and steering rotors of helicopters. ^ SUBSTANCE: proposed device includes U-shaped support suspended by side walls from strut with the aid of knife-edge pairs; side walls of support adjoin blade mounted on its nose portion and blade is placed on weighing machine at CG shifted relative to knife-edge pairs; support may be engageable with detachable panel which is used as support for blade at horizontal position of profile chord forming complex tooling for estimation of longitudinal and transversal balance of blade. Rollers fitted in strut on eccentric axles are profiled for outlet of nose section of blade. Weighing machine is made in form of double-arm lever mounted on knife-edge support; its cargo-receiving arm is provided with suspension for support of end part of blade and balancing arm is provided with movable weight which is set in motion by means of lead screw. ^ EFFECT: extended functional capabilities due to compact construction of low mass. ^ 6 cl, 3 dwg