Description
The D-1 howitzer was essentially a combination of the barrel of the 152-mm howitzer model 1938 (M-10) on the carriage of the 122-mm howitzer M1938 (M-30). Since the new carriage was lighter than that of the M-10, the barrel was fitted with a massive double-baffle muzzle brake DT-3 to soften the shock of recoil. The breech block was of interrupted screw type, the recoil system consisted of a hydraulic buffer and a hydro-pneumatic recuperator. The separately loaded ammunition included a variety of shells and eight different propellant charges in cartridges.
The carriage was nearly identical to the carriage of the M-30. It had suspension and steel wheels with pneumatic rubber tires. The trails were initially of riveted construction, but were eventually replaced in production by welded ones. Late production pieces were equipped with caster wheels to ease manhandling. Time to set up for combat was about two minutes. In an emergency it was possible to fire without splitting trails; however this was at the price of a drastically reduced traverse (1°30'). Since the gun was not equipped with a limber, it could be towed only by vehicle. The maximum towing speed was 40 km/h on paved roads, 30 km/h on cobbled roads and 10 km/h off-road. To give the crew some protection from bullets and shell fragments, the gun was fitted with a shield.
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Recoil devices
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Muzzle brake
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Carriage suspension
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Carriage suspension
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Right side of the breech
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Left side of the breech with panoramic sight
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Trails of the carriage
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Gunshield
Read more about this topic: 152 Mm Howitzer M1943 (D-1)
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