It can be determined from the following equation. The distanc e is positive if the thrust line is above the aircraft center of gravity.
where:
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is the X-coordinate of the thrust vector origin.
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is the X-coordinate of the aircraft center of gravity.
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is the Z-coordinate of the thrust vector origin.
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is the Z-coordinate of the aircraft center of gravity.
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is the thrust line inclination angle.
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See Graphic