METHOD OF PROPELLER BLADES STATIC ALIGNMENT Russian patent published in 2008 - IPC G01M1/12 

FIELD: physics, measurement.

SUBSTANCE: invention is related to measurements, in particular, to correction of static moments of propeller blades, which serve as rotary bearing surface, and may be used for alignment of helicopter rotors and antitorque rotors in the process of their production. Technical result is aimed at increase of quality of propeller blades static alignment. Method of static alignment of propeller blades that serve as the rotary bearing surface consists in reduction of actual values of blade static moments to preset parameters, both by blade chord and swing by means of its weighting in three points on bearing surface. At that in two points at the blade end and in one point on the butt, and committed addition or removal of weight of in sections of blade alignment, determined with the help of microprocessor programmed for calculation of values of correction of total mass and coordinates of centers of blade gravity in longitudinal and transverse directions by actual weight data in weighting points. After blade weight change, reduced values of blade static moments are finally reduced to preset parameters by processing of joint openings at blade butt, which are intended for its installation on propeller bushing and displaced in relation to blade center of gravity by correction value of blade static moment radius by swing, which is reduced to preset static moment of blade by swing, and rotation of blade end until blade center of gravity matches with axis of balance by chord.

EFFECT: higher quality of static alignment of propeller blades.

3 cl, 1 dwg