'X' and 'Y' Precession Amp Circuit Module

'X' and 'Y' Precession Amp.
Ref. No. 6JA/6191055
Ser. No.
DL 7736-00023
Issue

Precession is the term used to describe the movement of the axle of a gyroscope under the influence of an external force. If a force is applied to the rotor by moving one end of its axle, the gyroscope will be displaced at an angle of 90° from the applied force. In the Inertial Platform this force is applied by the aircraft motion and can be measured to give the direction and displacement for navigation calculations.An associated repair order document states:

"Used in E3R Platform 12-001-02E #5081
RO D01148 J97557
Contract SJR 592091-88
BAE India
Removed 25/1/88
Unstable Gyrocompassing"

Used in the E3R IN Platform probably fitted to an Indian Air Force Jaguar