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USSR
IS-2

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The IS-2 based on the existing IS and was in use from 1944.

Flag of World War 2 Union Soviet Socialist Republics
IS-2 scale illustration

General Details
Specifications
Operational Date(s)1944
Ordnance classification
Quantity Produced0
Weightunknown
Crew4
M.G's small4
M.G's large(>10mm)n/a
Length8.40 mtr
Width3.15 mtr
Height2.74 mtr
Engine Details/Performance
Max Road Speed23 mph
Max Cross Country Speed12 mph
Range Road150 miles
Range Cross Country130 miles
Fuel TypeUnknown
Fuel Capacity115 gal
Horse Power513 hp
Power/Weightunknown
General Information
The IS-2 based on the existing IS and was in use from 1944.

It was armed with 4 light machine guns. Its main armament consisted of a 122mm Gun D-25S L/45 which could penetrate 194 mm of flat plate at 800 metres


Armour Details
Turret
Front102mm@10°(104mm)
Side75mm@10°(76mm)
Rear50mm@10°(51mm)
Top35mm@90°(35mm)
Superstructure
Front120mm@45°(170mm)
Side90mm@35°(110mm)
Rear64mm@25°(71mm)
Top25mm@90°(25mm)
Hull
Front120mm@45°(170mm)
Side90mm@(90mm)
Rear64mm@(64mm)
Top25mm@90°(25mm)
Armour (x)mm @ (y)° (Effective mm @ 0°)
Effective Armour - Maximum 170 mm - Minimum 25 mm



Weapon Details
Flag
122mm Gun D-25S L/45
(Tank Gun)
Blank
History
This was the 122 mm gun M1931/37 (A-19) in a tank mounting
Manufactured1943 - 1950
Calibre122mm
LengthL/45
Rate of Fire2 rpm
 
Ammunition Details
Name/Id Calibre Weight MVelocity Explosive Content
OF-471
(APHE Armor Piercing High Explosive)
122mm 25Kg 800M/Sec
Quoted Penetration 120mm @ 500mtr/30° ( ≈ 138mm/0°)
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.13 0.25 0.52 1.07 1.66 2.3 2.99 3.73
Penetration(mm@30°) 212 199 185 168 152 137 122 109
Penetration(mm@0°) 245 230 214 194 176 159 142 126
Hit Probability(%) 98 98 98 98 81 57 29 22



OF-471
(HE High Explosive)
122mm 25Kg 800M/Sec 3.600Kg explosive
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.13 0.25 0.52 1.07 1.66 2.3 2.99 3.73
Direct Fire
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.13 0.25 0.52 1.07 1.66 2.3 2.99 3.73
Hit Probability(%) 98 98 98 98 81 57 29 22
Blast/Fragmentation Effects
Burst radius Infantry in open 99% kill4 mtr Burst radius Infantry in open 66% kill9 mtr
Burst radius Infantry in open 33% kill24 mtr  Armour Penetration inc roof at 1 mtr10 mm
An explosion within 4 mtr of infantry in the open will cause 99% casualties - lethal.
An explosion within 9 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's.
An explosion within 24 mtr of infantry in the open will cause 33% casualties.
The blast effect of this shell exploding within 1 mtr of an armoured vehicle will penetrate 10 mm of the tank armour including the roof.

Hit probability is based on a static 2 x 2.4 metre panel at 0 degrees(vertical) at the range specified.

The data that has been used to create these records has come from Wikipedia, The Lone Sentry, The Bundes Archive and numerous books and websites that have provided the detailed information that has not been available anywhere else. The information we use to calculate the penetration tables, flight times and the hit probability comes from the Gun Calibre, the Shell Mass(Kg) and the muzzle velocity, plus range reductions to allow for gravity and wind resistance. This calculation originally came from a pre-war Krupp calculation which has been modified, and seems to fit the actual test results.

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