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)

b. The time requirement shall be met for an equal number of trials right and left

traverse or elevation and depression. For combined traverse and elevation/depression layoffs, the time requirements apply to an equal number of trials from each of four directions from the target.

c. For acceptance testing, sighting on the specified target shall be performed for positions 3, 5, and 7 of table IV. Two trials shall be made and the average time shall be used for determination of compliance.

4.6.4.9.3.4 Gun laying on moving target and tracking accuracy. To determine conformance to 3.5.9.3.4, tests shall be conducted in accordance with the following:

a. Testing with the gunner's and commander's controls shall be conducted with the commander's control in the power mode and with the gunner's control in the stabilized mode. A suitable turret tracking instrument with timer, recorder and

calibrating device shall be used for performing tests. Tests shall be conducted in both

clockwise and counterclockwise directions.

b. For acceptance testing, traverse rates of 0.5, 3.3, 32.6 and 65.2 mils per second as shown in table V shall be used.

4.6.4.9.3.5 Operation on slopes. To determine conformance to 3.5.9.3.5, tests shall be conducted in accordance with the following:

a. The vehicle shall be located on a 15 + 2° slope for laying on target as specified in table IV. Tests with the gunner's controls shall be conducted with the vehicle operating in the non-stabilized mode. Tests with the commander's controls shall be conducted with the vehicle operating in the stabilized mode. Manual control tests shall be performed at the gunner's station.

b. For acceptance testing, sighting on the specified target shall be accomplished for positions 3, 5, and 7 of table IV for power and stabilized modes. Two trials shall be made and the average time used for determination of compliance. One trial shall be made for positions 3 and 5 for the manual mode.

4.6.4.9.3.6 Stability of operation, vehicle stationary.

4.6.4.9.3.6.1 Nonstabilized mode. To determine conformance to 3.5.9.3.6.1, for the elevation axis, the following test shall be performed with the turret level, turret electrical power OFF and engine inoperative:

a. Using the gunner's telescope and manual elevation handle, aline the main gun on a target within 1° of horizontal.

b. Install a magnetic base dial indicator with a minimum one-inch range on the turret roof, and set it at a predetermined point on the gun breech.