Patent ID: 7966865
Filing Date: 2011-06-28
Classification: G01M

Abstract:
1. A method of statically equalizing a span wise and a chord wise moment of a radial projection of a plurality of radial projections which have been detached from a rotating assembly, the method for equalizing a span wise moment comprising the steps of: (a) determining the location of the center of gravity of said radial projection by adjusting a moveable fulcrum, approximately perpendicular to and along the span wise axis of said radial projection, until an equilibrium has been established in a substantially horizontal position, (b) measuring the distance from said location to a plane perpendicular to the span wise axis of said radial projection and which contains the plane of attachment of said radial projection to said rotating assembly, (c) measuring the total weight of said radial projection, (d) multiplying the said total weight by the said distance to yield a span wise moment, (e) determining a preferred span wise moment, and then (f) adding or subtracting weight to or from said radial projection to create a modified span wise moment of each of the said plurality of radial projections approximately equal to said preferred span wise moment; the method for equalizing chord wise moments comprising the steps of: (g) establishing a preferred longitudinal axis, substantially parallel to the span wise axis of said radial projection, (h) measuring the weights of the said radial projection in the state of horizontal equilibrium at opposite ends of said moveable fulcrum assembly, (i) measuring the chord wise distances of said opposite ends of said moveable fulcrum to said preferred longitudinal axis, (j) multiplying said chord wise distances by said weights to determine respective clockwise and counterclockwise momentums about said preferred longitudinal axis to establish chord wise momentum of said radial projection by summing said counterclockwise and clockwise momentums whereby a consistent sign convention for direction of rotation in maintained, (k) determining a preferred chord wise moment, and then (l) adding or subtracting weight to or from said radial projection away from said preferred longitudinal axis to create a modified chord wise moment of said radial projection approximately equal to said preferred chord wise moment.