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![]() TM 55-1915-200-10
(1) Set RUD LIMIT Control (60, Sheet 2 of 2)
as desired.
NOTE
To
ensure
correct
heading
NOTE
indication, it is imperative that the
Adjust to set the rudder inside limits
Heading Repeater be synchronized
as desired. Higher settings allow
with the gyrocompass. The repeater
larger rudder angles, lower settings
remains synchronized even when the
reduce maximum rudder angles used
system is off, provided gyrocompass
in heading changing but may
data is available.
interface with heading keeping.
f. Set the Mode Selector switch (47, Sheet 1 of 2)
(2) Set WEATHER Control (61, Sheet 2 of 2)
to synchronize.
to 0 in calm weather.
g. Rotate the Heading Selector knob (53) until the
dials show the same heading indication at the course
NOTE
heading index lubber line (56) as the gyrocompass
The optimum setting for a particular
heading.
sea condition is equal to the number
of degrees of natural yaw from the
NOTE
selected heading. For example, if the
Position the Mode Selector (47) to
ship is yawing plus or minus 3 degrees
from the ordered heading when the
gyrocompass and note that the
WEATHER control is set to 0, set the
repeater and the gyrocompass
WEATHER control to 3.
headings are the same.
If the
headings are not the same, repeat
step above.
(3) Set RUD MULT (64, Sheet 2 of 2) to
minimum setting.
h. Position the Heading Selector knob (53) as
NOTE
necessary to align the pointer under the course heading
This will prevent the vessel from
index lubber line (56).
wandering from the ordered heading
i. Energize the Gyropilot by positioning the
in a calm sea. Operation at reduced
Steering Control switch, (62, Sheet 2 of 2) to the HAND
speed usually requires a higher
position.
setting.
This control increases
rudder angle ordered for a given
NOTE
heading.
Always go into AUTO operation from
the HAND mode with the rudder at
amidships and with no ordered
l. To change heading, rotate the heading (outer)
heading
change
to
prevent
scale of the Heading Selector (53, Sheet 1 of 2) to the
desired heading or rotate the relative heading change
undesirable rudder movement.
(inner) scale to the desired heading change.
m. As the vessel comes to the new heading, verify
j. Set Mode switch (62) to AUTO and note that the
that the course heading, (outer) scale, and the vernier
vessel steadies on the indicated heading.
heading, (middle) scale, indicate the new heading at the
k. Adjust the Control Amplifier controls as follows
for optimum heading control:
2-364
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