PC-DMIS Blade uses two variations of the Two Point bestfit algorithm.
The mean camber line (MCL) bestfit is based upon the nominal line between two "balance" points in relation to the leading edge. For example, if you were to use MCL Percentages of 5 and 95, the fit is based on the nominal mean camber line between the point that is 5% from the leading edge point and the point that is 95% from the leading edge point.
The measured curves are shifted until the measured 5% point is identical to the nominal 5% point. Then the measured curves are rotated about the measured 5% point until the measured and nominal 5% to 95% line segments are collinear.
This is the same as conventional Two Point MCL bestfit, but the points are in relation to the trailing edge rather than the leading edge.
Two Point MCL Bestfit Parameters
Use Offsets - The "balance" points for the fit are the leading edge and trailing edge offset points instead of points based on MCL percentages. If this option is not selected, MCL Percentages is used.
MCL Percentages - These two values provide the location of "balance" points as a percentage of the length of the MCL. For example, values of 10 and 90 would use points at 10% and 90% along the MCL.
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