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MIL-T-45379D(AT)
3.5.9.3.2 Turret traversing speeds. The turret shall be controllable over a speed range of at
least 0.5 mil per second to 400 mils per second. The maximum tracking speed, 65.2 mils per
second, shall occur at a gunner's handle displacement of 50 + 10. The steady speed after
acceleration shall continuously increase with increasing handle displacement until maximum
speed is reached. These requirements apply to both stabilized and nonstabilized operation and to
both gunner and commander power controls (see 4.6.4.9.3.2).
3.5.9.3.3 Gun laying on stationary target, vehicle stationary. The average time required to
position the periscope reticle within the borders of a 0.25 mil square target shall not exceed the
times listed in table IV. These requirements shall be met by the gunner's and commander's
controls and by the manual controls (see 4.6.4.9.3.3).
TABLE IV. Gun laying on stationary target.
Layoff - Mils
Average time seconds
Level
15 slope
Position
Azimuth
Elevation
Manual
Power
Stabilized
Power and
operation
operation  operation
stabilized
operation
1
0
10
2.0
2
3
5
2
25
0
3.0
3
4
6
3
25
10
5.0
5
6
8
4
100
0
4.5
4
5
7
5
400
0
13.5
5
7
9
6
800
0
6
8
10
7
1600
0
8
10
12
8
3200
0
13
15
17
3.5.9.3.4 Gun laying on moving target and tracking accuracy. With the tank in a stationary
position, the time required to lay the gunsight reticle within the borders of a moving target from
an established lead angle shall not exceed 3.5 seconds in any instance as specified in table V.
The target shall be as specified in the table and shall be moved over a horizontal crossing course.
The lead angle shall be established with the line of sight aimed behind the moving target at
which time the line of sight may be stationary or moving at a speed equal to or less than the
target speed. After the reticle has been positioned within the borders for the length of the course
in accordance with percentage of time on target specified in the table. This requirement shall be
met with the gunner and commander power controls for nonstabilized operation, and by the
gunner power control for stabilized operation (see 4.6.4.9.3.4).
14

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