Patent ID: 11859507
Assignee: GENERAL ELECTRIC COMPANY
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 7:
8. The method of claim 1, wherein the calculating the prediction offset value includes:
identifying a triangular spatial relationship between the fifth location of the third reference point on the upper surface of the HJ flange of the lower casing, the sixth location of the fourth reference point on the upper surface of the HJ flange of the lower casing, and the third location of the first reference point at the first optical target;
determining a rotation angle of the HJ flange of the lower casing about the rotor axis by calculating an angle between a first vector extending from the rotor axis to the first location of the first optical target in the top-on position and a second vector from the rotor axis through the third location of the first optical target in the top-off position;
translating the triangular spatial relationship to the top-on position based on the first reference point at the first location in the top-on position and the rotation angle of the HJ flange of the lower casing about the rotor axis, the translating creating a predicted top-on location for the third reference point in the top-on position;
calculating any vertical difference between the fifth location of the third reference point as measured and the predicted top-on location for the third reference point; and
calculating a vertical adjustment based on any vertical difference of the HJ flange of the lower casing,
wherein the adjusting includes adjusting the component support position to one of raise or lower the component support position based on the vertical adjustment and the known spatial relation of the third reference point to the component support position of the component in the lower casing.