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USSR
BT-7M |
| The BT-7M based on the existing BT and was in use from 1938. |
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| | Specifications | | Operational Date(s) | 1938 | | Ordnance classification | | | Quantity Produced | 0 | | Weight | unknown | | Crew | 3 | | M.G's small | 2 | | M.G's large(>10mm) | n/a | | Length | 5.74 mtr | | Width | 2.46 mtr | | Height | 2.31 mtr | | Engine Details/Performance | | Max Road Speed | 54 mph | | Max Cross Country Speed | 39 mph | | Range Road | 440 miles | | Range Cross Country | 375 miles | | Fuel Type | Unknown | | Fuel Capacity | 174 gal | | Horse Power | 500 hp | | Power/Weight | unknown | | | General Information | The BT-7M based on the existing BT and was in use from 1938.
It was armed with 2 light machine guns. Its main armament consisted of a 76.2mm Regimental Gun M27 L/16 which could penetrate 61 mm of flat plate at 200 metres
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| | Turret | | Front | | 15mm | @ | 10° | (15mm) | | Side | | 13mm | @ | 10° | (13mm) | | Rear | | 13mm | @ | 10° | (13mm) | | Top | | 6mm | @ | 90° | (6mm) |
| | Superstructure | | Front | | 22mm | @ | 50° | (34mm) | | Side | | 13mm | @ | 0° | (13mm) | | Rear | | 13mm | @ | 0° | (13mm) | | Top | | 6mm | @ | 90° | (6mm) |
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| Hull | | Front | | 22mm | @ | 30° | (25mm) | | Side | | 13mm | @ | 0° | (13mm) | | Rear | | 13mm | @ | 0° | (13mm) | | Top | | 6mm | @ | 90° | (6mm) |
| | Armour (x)mm @ (y)° (Effective mm @ 0°) | | Effective Armour - Maximum 34 mm - Minimum 6 mm |
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| Weapon Details |
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76.2mm Regimental Gun M27 L/16 |
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| | Calibre | 76.20mm |
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| | Length | L/16 |
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| Ammunition Details |
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| Name/Id |
Calibre Weight MVelocity |
Explosive Content |
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AP
(AP Armor Piercing)
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76.20mm 6.2Kg 387M/Sec | |
| Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
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| Flight Time(Secs) |
0.26 |
0.53 |
1.09 |
2.31 |
3.68 |
5.23 |
7.01 |
9.06 |
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| Penetration(mm@30°) |
57 |
52 |
48 |
42 |
37 |
32 |
27 |
23 |
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| Penetration(mm@0°) |
66 |
61 |
56 |
49 |
43 |
37 |
32 |
27 |
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| Hit Probability(%) |
98 |
98 |
98 |
54 |
22 |
6 |
2 |
1 |
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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.
© WWIITanks 1980-2024
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