 |
|||
|
|
|||
| ||||||||||
|
|  MIL-T-45379D(AT)
3.5.9.3.15 105mm gun manual control.
3.5.9.3.15.1 Traverse effort. The torque applied to the hand traverse crank to maintain turret
motion shall not exceed 76 pounds force inch (lbf in) (see 4.6.4.9.3.15.1).
3.5.9.3.15.2 Elevation effort. The mean torque required to rotate the hand crank at a uniform
rate to maintain gun movement shall not exceed 46 lbf in. No individual reading shall exceed
55 lbf in (see 4.6.4.9.3.15.2).
3.5.9.3.15.3 Elevation response rate. The gun at the horizontal position within plus or
minus 1, shall move at a rate of at least 10 mils per revolution of the handcrank in elevation and
depression with the hand crank turned at a rate not less than 10 rpm and not more than 20 rpm
(see 4.6.4.9.3.15.3).
3.5.9.3.16 Power and manual control. The manual traverse and power elevation control
shall be capable of simultaneous use during non-stabilized operation. The same requirement
applies to the power traverse and the manual elevation controls. There shall be no movement of
the gun or turret caused by turning the elevation and traverse power switch on or off. The gun
firing switches shall function individually with the elevation and traverse power switch on or off
and with the main gun and coaxial machine gun selector switches turned on individually or
collectively. Movement of the gun or turret caused by turning the stabilization switch on or off
shall not exceed 3 mils in elevation or traverse. The stabilization system shall be capable of
being turned off by the commander's or loader's stabilization shut-off switch (see 4.6.4.9.13.16).
3.5.9.3.17 Superelevation actuator.
3.5.9.3.17.1 Accuracy. The superelevation actuator shall maintain the gunner's periscope on
target within 2 mils after 60 mils superelevation of the gun has been accomplished
(see 4.6.4.9.3.17.1).
3.5.9.3.17.2 Gun motion. During superelevation of the gun, changes in gun rate amplitude
shall not exceed 25 milliradians per second (mrad/s) peak-to-peak during the period starting after
the first cycle of initiation of superelevation and ending with the last peak prior to completion of
superelevation. Superelevation shall occur in not more than 4.5 seconds. The time for the gun
motion to damp out within the zone of + 2.5 mrad/s after completion of superelevation of the gun
shall not exceed 1 second (see figure 5). The gun shall be balanced (see 4.5.1). The starting
position of the gun shall be within + 3 of horizontal and over the front of the tank between the
head lamps. The above requirements apply to both elevation and depression ballistic corrections
(see 4.6.4.9.3.17.2).
3.5.9.3.17.3 Stabilized mode. When a ballistics correction is fed into the gunner's periscope
reticle, the control system shall automatically displace the gun to maintain the gunner's periscope
sight on target within 4.0 mils in elevation and deflection (see 4.6.4.9.3.17.3).
3.5.9.3.18 Hydraulic fluid. The hydraulic fluid shall conform to MIL-H-46170
(see 4.6.4.9.3.18).
18
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals