Involute polar angle

Involute polar angle

Expressed as θ, the involute polar angle is the angle between a radius vector to a point, "P", on an involute curve and a radial line to the intersection, "A", of the curve with the base circle.1

Notes

1. "ANSI/AGMA 1012-G05", "Gear Nomenclature, Definition of Terms with Symbols".


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