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Your Ideal Tank Contest

Дата: 11.03.2010 02:04:03
MrVic: First attempt :) Tried to stick to technologies and systems in place by June-July 1940.
Most fun part was thinking about away this Tank could have come into being. While
doing the research required I stumbled upon many things I did not know which was quite nice.
Posted Image
T-57A History
The T-57A’s Creator was Mikhail Koshkin’s senior apprentice, Adrik Vasilev.
Vasilev who worked under Koshkin for a few years prior to the A-32 (T-34) project being assigned to Koshkin’s Engineering Team.
The start of the T-57A project began with a single Russian spy operating in France during the German advance to
the English Channel the spy stumbled upon design and specifications for the Britsh Ordnance Quick-Firing 6-pounder 7 cwt
or usually called the 6 pdr. The British had developed the 6 pdr and were working to setup a manufacturing plant in France
to bolster the need for anti-tank guns. Due to the unexpected rapid advance of the Germans the factory was abandoned in
haste as the workers and engineers fled to Britain. In the chaos the unnamed spy quietly acquired them and fled the Moscow.
From there the plans were presented to Koshkin in hopes they could be used in his project.
Koshkin tasked Vasilev with overseeing the production of the 6 pdr in Moscow. The production began
immediately and Vasilev had already modified the production run to fit it into a armored platform.
Vasilev presented the completed 6 pdr variant to Koshkin, but Koshkin was already commited to using
the F-32 gun in his design.
Koshkin decided to have Vasilev work on a parallel project utilizing the 6 pdr variant. Upon the
completion of the 2 prototype T-34’s in January 1940 by Koshkin, Vasilev had completed his turret variant
and mounting the 6 pdr along with adding minor improvements to armor and crew radio operations. With
Koshkin doing the brunt of the work on the T-34 Vasilev focused more on improvements and combat ideas of
his own tank design. Basing his tanks chassis off the T-34 chassis with minor changes sped the process from
design to prototype. Vasilev turret design provided more room for a loader and enabling the crew to
achieve the high rate of fire the 6 pdr was designed for. In addition the storing of ordnance in
protected armored compartments helped in protecting the tank from enemy fire hitting the ammunition
compartments on board and destroying or crippling the T-57A. Final changes were in place and the
first 2 prototypes were completed by March 1940. Ironically the Britsh ran into design issues with
the carriage for their 6pr and due to the 2pdr still being produced well into 1942 limiting the
production opportunity for the British 6pdr, its possible the Russians utilized the British designed
weapon before even the British.
General Specifications
Formal Designation......T-57A Model 1940
Manufacturer(s).........Factory No.181 Kharkov Locomotive Works (KhPZ, Stalingrad Tractor Factory (STZ)
Production Quantity.....6 (400 Ordered)
Production Period.......Early 1940 - ?
Type....................Medium Tank
Crew....................5
Length overall..........5.92 m (19' 5")
Width...................3.00 m (9' 10")
Height..................2.43 m (8’3”)
Barrel Overhang.........0.61 m (2’)
Combat Weight...........26300 kg (58000 lbs)
Radio Equipment.........71-TK-32
ARMAMENTS
Primary Armament........Ordnance Quick-Firing 6-pounder 7 cwt (57mm Gun M1)
Ammunition Carried......112
Traverse (degrees)......Electric (360°)
Elevation (degrees).....-8° to +33°
Traverse speed (360°)...10 sec.
Sight...................TOD-6, PT-6
Secondary Armament......2 x 7.62mm DT MG (coaxial/bow)
Ammunition Carried......3122/4851
ARMOR
-------------------------Front------------------Side-------------------Rear-----------------Top/Bottom
Hull..................50mm@30°..........45mm@90°.........45mm@45°.......20mm@0°
Superstructure...45mm@30°.........45mm@50°.........45mm@48°.......20mm@0°
Turret................45mm@round......45mm@60°.........45mm@60°.......20mm@0&6°
Mantlet.............50mm@30&90°......NA......................NA....................NA
MOBILITY
Engine Make & Model.....V-2-34
Type & Displacement.....V12, 38.9 liters
Horsepower (max.).......500hp@1800rpm
Power/Weight Ratio......19.2 hp/tonne
Gearbox.................4 forward, 1 reverse
Fuel....................Diesel
Range on/off road.......300+/225+ km
Mileage on road.........140 l/100km
Fuel Capacity...........420 (+ 140 external) l
Speed on/off road.......55/40 km/h
Track Links.............74/track
Track Width.............55.0 cm (22")
Track Ground Contact....372 cm (146")
Ground Pressure.........0.64 kg/cm2 (9.1 psi)
Ground Clearance........0.4 m (1' 4")
Turning Radius..........7.6 m (24' 11")
Gradient................35°
Vertical Obstacle.......0.8 m (2' 7")
Fording.................1.3 m (4' 3")
Trench Crossing.........2.5 m (8' 2")

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