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Vertical angle
Horizontal angle
Vertical laser offset adjustment
X
Y
Z
90°
(Merlin LT pod
horizontal)
0
Facing aft
0
-0.116
0.230
22.5
acw
0.044
-0.107
0.230
45
acw
0.082
-0.082
0.230
22.5
cw
-0.044
-0.107
0.230
45
cw
-0.082
-0.082
0.230
45°
(Merlin LT pod
inclined)
0
Facing aft
0
-0.082
0.312
22.5
acw
0.031
-0.076
0.312
45
acw
0.058
-0.058
0.312
22.5
cw
-0.031
-0.076
0.312
45
cw
-0.058
-0.058
0.312
Table 3 Vertical laser offset adjustment - mounting plate used - Merlin LT facing aft
4.4.4 Apply the vertical laser offset adjustment to the measured XYZ lever arm
The vertical laser offset adjustment can now be applied to the initial physical XYZ lever arm measurement.
Two examples are illustrated in Figure 20 below.
Example 1 – the Merlin LT is set at a 90° vertical angle and 22.5° cw horizontal angle:
•
Measured offsets to mounting plate: X = 0.9, Y = 1.8, Z = 1.0
•
Vertical laser offset adjustment
o
Merlin LT pointing fore, so refer to Table 2;
o
90° vertical angle;
o
22.5° cw horizontal angle
o
X = 0.044, Y = 0.107, Z = 0.230
•
Final lever arm offset: X = 0.944 m, Y = 1.907 m, Z = 1.230 m
Example 2 – the Merlin LT is set at 45° vertical angle and 45° cw horizontal angle:
•
Measured offsets: X = -0.5, Y= -1.5, Z = 1.0
•
Vertical laser offset adjustment:
o
Merlin LT pointing aft, so refer to Table 3;
o
45° vertical angle;
o
45° cw horizontal angle;
o
X = -0.058, Y = -0.058, Z = 0.312.
•
Final lever arm offset: X = -0.558 m, Y = -1.558 m, Z = 1.312 m