T-45C TS, ADV & IUT ENG-24
GINA Operating Characteristics
1.
Gimbaled: XYZ axes
a.
Allow full 360 degrees freedom of motion
b.
Used in earlier aircraft inertial navigation
systems (INS)
c.
2.
Prone to drift
a.
Drift is an undesired shift of a spin axis from
original inertial coordinate orientation
b.
Drift causes a more significant effect on
heading and position than on attitude reference
indicators
c.
Can be compensated for mechanically and/or
mathematically
3.
Stabilized platform
a.
Mechanical gyros are initially aligned in a caged
mode
b.
An initial true vertical is sensed by
precessed to the true vertical
c.
Earth-rotation (earth-rate) and transport
call-up tables
d.
Gyro is torque-precessed to compensate for
C.
1.
definition
a.
No spinning masses
Original (9-98)
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