 |
|||
|
|
|||
| ||||||||||
|
|  MIL-T-45379D(AT)
4.6.4.9.3.15.3 Elevation response rate. To determine conformance to 3.5.9.3.15.3, the main
gun hand elevation crank shall be rotated at the rate of 10 to 20 rpm, while observing a mil-scale
target through the gunner's periscope. The measured response rate shall be not less than 10 mils
per revolution of the handle.
4.6.4.9.3.16 Power and manual control. To determine conformance to 3.5.9.3.16, the
following tests shall be conducted: The gun shall be elevated and depressed with the gunner's
power control while traversing the turret with the manual controls. The gun shall be elevated
and depressed by manual control while traversing the turret with the gunner's power control.
The elevation and traverse power switch shall be turned on and off not less than three times and
the gun observed for movement. The stabilization switch shall be turned on and off not less than
three time and the gun observed for movement. Gun movement shall not exceed the specified
amount. With the stabilization system ON verify that the system can be deactivated by the
commander's or loader's stabilization shut-off switch. The gun firing, switches shall be tested
and shall operate as specified.
4.6.4.9.3.17 Superelevation actuator. To determine conformance to 3.5.9.3.17.1 and
3.5.9.3.17.2, the tests shall be performed utilizing the procedures specified in 4.6.4.9.6.3 for
checking the accuracy of ballistic computer solutions. Prior to performing the tests, verify that
the gun has been balanced per 4.5.1 and that the battery voltage is not less than 18 V. The
dummy round used in balancing the gun shall not be used in the superelevation actuator tests.
4.6.4.9.3.17.1 Accuracy. To determine conformance to 3.5.9.3.17.1, verify the following:
a. With the computer in normal mode, HEP ammunition indexed, all conditions
standard, manual range, and the gunner's periscope reticle on target, change the range
from 1200 to 3200 m. After gun movement, the periscope reticle shall be on target
within a tolerance of 2 mils in elevation.
b. Re-lay the periscope reticle on target and then change the range manually from
3200 to 1200 m. After gun movement, the periscope reticle shall be on target within
a tolerance of 2 mils in elevation.
4.6.4.9.3.17.2 Gun motion. To determine conformance to 3.5.9.3.17.2, attach
instrumentation to the gun breech to record gun elevation/depression rate-of-change and
oscillation amplitudes. Make the following checks with the computer in NORMAL mode, HEP
ammo, and MANUAL RANGE.
a. Record gun motion when going from a 1200 m range to a 3200 m range.
b. Record gun motion when going from a 3200 m range to a 1200 m range.
Verify that the requirements specified in 3.5.9.3.17.2, have been met.
61
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals