"Calculations of mass of the hull and turret according to technical requirements of the GBTU TU for 1945
On the increase of mass of the T-50 due to thickening the armour (calculations are approximate, measurements were taken from photos of the cutaways of the hull in the proving grounds report).
Item | Thickness | Mass (kg) | Required thickness | Increase in mass (kg) |
Turret | 37 mm | 2000 | Comparable with the IS-3 | 4000 |
Sides (upper) | 37 mm | 2600 | 74 mm | 2600 |
Sides (lower) | 37 mm | 850 | 92 mm | 1275 |
Rear plates | 37 mm | 870 | 74 mm | 870 |
Floor | 15 mm | 952 | 20 mm | 315 |
Cannon | 45 mm caliber | 313 | 76 mm caliber | 840 |
Total | 7585 | 9900 |
The mass of the T-50 tank is 14,000 kg. When the armour is increased to the thicknesses in the table, the mass of the tank will be 23,900 kg.
When designing the new tank, it is necessary to also take into account the increase of the mass of the engine by about 500 kg.
Assistant to the Chief of the 2nd Department of the GBTU TU, Engineer-Captain [signature]"