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Upgunning the T-43

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"T-43 tank turret with the D-5 system
Description

During installation of the D-5 system into the T-43 tank turret, an insert is welded into the gun port, as the D-5 system is narrower than the F-34. An armoured shield is installed in the upper front part of the turret.

The seats of the gunner and commander are located in the same place as with the F-34. The turret traverse mechanism remains in the same place. The elevation mechanism is lowered by 40 mm relative to the elevation mechanism used on the F-34.

The trigger of the system is electric. The trigger is installed in the handle of the elevation flywheel. An electric trigger also works the coaxial DT machinegun. There is also a backup hand firing mechanism for the D-5 gun.

The sights and observation devices of the turret are installed in the same way as they are when in the F-34 is installed.

The radio is located in the same place as when the F-34 is installed.

50 rounds of ammunition are carried, 29 of which are carried in the floor, 16 in the turret bustle, and 5 on the right side of the turret.


Comparative characteristics of the F-34 and D-5 systems

F-34

D-5

Weight of the system with mantlet, kg

1300

1600

Caliber, mm

76

85

Distance from the trunnions to the rear of the recoil guard, mm

1444

1540

Recoil length, mm

400

300

Maximum recoil force, kg

7600

17000

Bore axis height relative to trunnion, mm

88 above trunnion

35 below trunnion

Maximum elevation, degrees

25

25

Minimum depression, degrees

5

5

Muzzle velocity

760

-

Maximum shell mass, kg

9

15.5

Maximum round length, mm

706

905

Sights

PT-4-7, TMFD

PT-4-15, KT

Mass of the tank with the gun

34100

34050


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