Obtained by multiplying unbalance mass with its radial distance of its center of gravity from the shaft axis without referring to its angular position.
Angle at which an unbalance mass is located (referring to a polar coordinate system, which is fixed to the shaft axis and rotating with the rotor).
Component of a balancing machine which generates a reference to determine the angular position of the rotor.
Mark at the rotor in order to create a fixed angular reference system.
Aerospace Recommended Practice.
System, which automatically compensates changes of the unbalance during operation.
Straight line, about which a rotor actually rotates.