Path: SC/Disturbances
% Computes a gravity gradient torque.
Since version 1.
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Form:
t = TGG( inr, u, wO )
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Inputs
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inr (3,3) Inertia matrix
u (3,:) Unit vector from the earth to the spacecraft
in the spacecraft body frame (the same frame as
the inertia matrix.)
wO (1,1) Orbit rate (rad/sec)
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Outputs
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t (3,:) Torque (units will be consistent with inertia)
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