MIL-T-45379 Tank, Combat, Full-Tracked, 105 Mm Gun, M60A3-TtsThis specification establishes the construction, performance and inspection requirements for M60A3 full-tracked combat tank equipped with a Tank Thermal Sight TTS.

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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.

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).

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