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October 13, 1937 issued by the ABTU the requirements for the design of a new fighting vehicle:
Tactical and technical requirements for the design and manufacture of a new wheeled-tracked tank BT-20
1. Type - wheeled-tracked, with the drive wheels on 6-type Christie.
2. Combat weight - 13 - 14 m.
3. Weapons - 1h45 mm, 3 TD, a flamethrower for self-defense or 1h76 mm, 3 TD, a flamethrower. Every 5th tank should have anti-aircraft guns.
4. Ammunition - 130 - 150h45 mm or 50h76 mm, 2500-3000 rounds.
5. Reservation: forehead - 25, the conical tower - 20, a board feed - 16, the roof and the bottom - 10 mm. Armor All slant, with the minimum angle of inclination armor plates and the tower housing 18 °.
6. Speed - on tracks and wheels is the same: max. 70 km / h, min. 7 km / h.
7. Crew - 3 people.
8. Power reserve - 300 - 400 km.
9. Engine - DB-2 with a capacity of 400 to 600 hp
10. Transmission - the type of wheel-tracked tank BT-ICs (power take-off wheel to move after steering clutches).
11. Suspension individual, as it is desirable to apply a spring torsion springs.
12. Install the stabilizer shot "Orion" and the horizontal stabilizer tower system Povalova engineer, install lights for night shooting with a range of up to 1000 m.
However, the "teeth" on the customer M.I.Koshkina apparently grew large, as already 28 October 1937 Director of the plant number 183 has received an order from the Main Directorate as follows:
"The director of the plant № 183. Government Decision number 94ss of 15 August 1937. Main Administration invited to design and manufacture prototypes and to prepare for the 1939 production for the serial production of high-speed wheel-track tank with a synchronized way. In view of the extreme seriousness of this work and extremely compressed deadlines set by the Government, the 8th General Directorate (Narkomoboronproma.- Approx. Ed) considers it necessary to take the following actions.
1. For the design of the machine to create a separate KhPZ Bureau (OKB), reporting directly to the chief engineer of the plant.
2. In agreement with the Wammy ABTU and appointed Chief of the Bureau of associate academy military engineer 3 ranks Dick Adolf Jakovljevic and select to work in the office from October 5 to 30 people graduate Wammen and from December 1, an additional 20 people.
3. In agreement with the Red Army ABTU appoint a chief consultant on the machine Captain Eugene A. Kulchytsky.
4. Not later than 30 September to allocate to work in OKB-8 best designers in the tank for the plant
the values of their leaders separate groups, one standardizer, secretary and archivist.
5. Create at OKB breadboard model workshop and ensure extraordinary performance of work related to the new design in all shops of the plant.
6. Considers it necessary to project three variants of the running gear and produce two prototypes approved by the Project Review.
7. In carrying out the work to conclude an agreement with ABTU not later than 15 October 1937. ".
Thus, the factory was established CB is much more powerful than the main. The new Bureau of the plant have been allocated designers: Morozov, Korotchenko, Shur, Moloshtanov, Lurie Verkovsky, Deacon, Gorun, Tarshinov Bondarenko, Baran, Kurasov, Doroshenko, Gorbenko, Efimov, Efremenko, Radoychin, Senturin, Dolgonogova, Pomochaybenko, Kalendin, Gross. In addition, by Wammen and ABTU in Kharkiv sent engineers Vasilyev Matyukhina, Vodopiyanov-graduate students and students of the Academy. Head of the Design Bureau became A.Ya.Dik, assistant chief engineer of Gorun, consultant ABTU Kulchytsky. Section chiefs were appointed: Doroshenko (control), Tarshinov (cabinet), Gorbenko (motor), Morozov (transmission), Vasilyev (chassis).
Unfortunately, any additional documents, covering the further destiny of EDB, could not be found yet. Nothing is known about A.Ya.Dike-official version of the creation of the A-20 tank (BT-20) A-32 and A-34 (T-34), his name is absent! Of all the currently available publications that in May 1938, projects wheeled-tracked tank A-20 and A-32 tracked were in Moscow M.I.Koshkin and AA Morozov. Why they? These questions remain open ...
So, on May 4 at a meeting of the Committee of Defense of the USSR discussed two projects - the A-20 and A-32. In August, they were treated to a meeting of the Supreme Military Council. As a result, both cars have been approved. However, in accordance with the views of the leaders of ABTU preference wheeled-tracked version. By November 6 the design department of the plant completed a project and model of the A-20 tank, and presented them to the Commission. In the first half of the next, 1939 A-20 tank produced in the metal.
It had a fully welded housing made of homogeneous armor. The thickness of hull plates ranged from 10 to 20 mm, with the upper front sheet positioned at an angle of 53 °.
The welded tower, structurally similar to the tower of the BT-7 arr. 1937, but somewhat larger in size (diameter of the ring in the world increased by 70 mm), installed 45-mm gun mod. 1934 paired with her machine gun DT. The second DT machine gun was located in the ball mount in the front hull, the right of the driver's hatch.
A number of components and assemblies A-20 borrowed from BT-7. Something partially redesigned, others developed anew.
The drive wheel running was carried out on six wheels, as well as the tank BT-IP. Track width at the same that the BT-7, diameter of rollers has been increased to 400 mm. The weight of the tank increased to 18t.
Test A-20 (in conjunction with the A-32) took place in July - August 1939 at the site of the plant in Kharkov. When tests revealed that both cars basically correspond to their business requirements. Since November KhPZ conducted on completion of working drawings A-20, and the tank, which reinforced the chassis, ready for testing in January 1940. As for the A-32, the decision on mass production took in favor of more tolstobronnoy car A-34.
In this regard, the plant's management appealed to the People's Commissariat to release KhPZ from the production of A-20, and charge it to another serial output for-water. This request was due to the impossibility of mass production KhPZ two types of tanks.
However, experimental work on the A-20 continued in the spring of 1940, which follows from the "list of necessary experimental work at the factory number 183 in the 1940". Apparently, the last point in the fate of the A-20 was in June 1940, the decision of the Politburo of the CPSU (b) the production of T-34 and KV. On the "twenty" in this document is silent - the factory for him was not.
It is necessary to mention the combat use of an experienced A-20 tank. First, it included the tank company Semenov formed, apparently from cars NIBTPoligona, and from mid-November - in the 22th Tank Brigade. The brigade was part of the mobile group lieutenant colonel Yermakov and was fighting in the area of Pavlovskaya Sloboda. December 1, 1941 A-20 was damaged, but four days later entered the system. At the 22th Tank Brigade until mid-December A-20 supported Dovatora cavalry, was again damaged and evacuated to the rear for repair. His fate is unknown.
Performance characteristics:
Combat weight
18000 kg
CREW, people.
4
DIMENSIONS
Length mm
5760
Width
2650
Height mm
2435
Ground clearance, mm
400
WEAPONS
45-mm gun 20K and two 7.62 mm machine gun DT
Allowance of ammunition
Shot 152 and 2709 cartridges
Aiming devices
Top telescopic sight and a panoramic TP-1
RESERVATIONS
Forehead case - 20 mm
The board case - 20-25 mm
Feed the body - 16 mm
Top and bottom - 10 mm
Tower - 25 mm
ENGINE
B-2, diesel, 12-cylinder, 505 hp power
TRANSMISSION
four-three-way transmission, the two friction clutches and two, single-board gear
CHASSIS
(on one side) 4 road wheels, front and rear drive steering wheel
SPEED
77 km \ h on tracks
83-85 km \ h on wheels
Cruising on the highway
400 km
Overcome obstacles
Wall height, m
1.20
The width of the ditch, m
2.40
Fording depth, m
1.40
MEANS OF COMMUNICATION
71TK-3 radio and intercom TPU-2
ru.wikipedia.org/wiki/%D0%91%D…
Tactical and technical requirements for the design and manufacture of a new wheeled-tracked tank BT-20
1. Type - wheeled-tracked, with the drive wheels on 6-type Christie.
2. Combat weight - 13 - 14 m.
3. Weapons - 1h45 mm, 3 TD, a flamethrower for self-defense or 1h76 mm, 3 TD, a flamethrower. Every 5th tank should have anti-aircraft guns.
4. Ammunition - 130 - 150h45 mm or 50h76 mm, 2500-3000 rounds.
5. Reservation: forehead - 25, the conical tower - 20, a board feed - 16, the roof and the bottom - 10 mm. Armor All slant, with the minimum angle of inclination armor plates and the tower housing 18 °.
6. Speed - on tracks and wheels is the same: max. 70 km / h, min. 7 km / h.
7. Crew - 3 people.
8. Power reserve - 300 - 400 km.
9. Engine - DB-2 with a capacity of 400 to 600 hp
10. Transmission - the type of wheel-tracked tank BT-ICs (power take-off wheel to move after steering clutches).
11. Suspension individual, as it is desirable to apply a spring torsion springs.
12. Install the stabilizer shot "Orion" and the horizontal stabilizer tower system Povalova engineer, install lights for night shooting with a range of up to 1000 m.
However, the "teeth" on the customer M.I.Koshkina apparently grew large, as already 28 October 1937 Director of the plant number 183 has received an order from the Main Directorate as follows:
"The director of the plant № 183. Government Decision number 94ss of 15 August 1937. Main Administration invited to design and manufacture prototypes and to prepare for the 1939 production for the serial production of high-speed wheel-track tank with a synchronized way. In view of the extreme seriousness of this work and extremely compressed deadlines set by the Government, the 8th General Directorate (Narkomoboronproma.- Approx. Ed) considers it necessary to take the following actions.
1. For the design of the machine to create a separate KhPZ Bureau (OKB), reporting directly to the chief engineer of the plant.
2. In agreement with the Wammy ABTU and appointed Chief of the Bureau of associate academy military engineer 3 ranks Dick Adolf Jakovljevic and select to work in the office from October 5 to 30 people graduate Wammen and from December 1, an additional 20 people.
3. In agreement with the Red Army ABTU appoint a chief consultant on the machine Captain Eugene A. Kulchytsky.
4. Not later than 30 September to allocate to work in OKB-8 best designers in the tank for the plant
the values of their leaders separate groups, one standardizer, secretary and archivist.
5. Create at OKB breadboard model workshop and ensure extraordinary performance of work related to the new design in all shops of the plant.
6. Considers it necessary to project three variants of the running gear and produce two prototypes approved by the Project Review.
7. In carrying out the work to conclude an agreement with ABTU not later than 15 October 1937. ".
Thus, the factory was established CB is much more powerful than the main. The new Bureau of the plant have been allocated designers: Morozov, Korotchenko, Shur, Moloshtanov, Lurie Verkovsky, Deacon, Gorun, Tarshinov Bondarenko, Baran, Kurasov, Doroshenko, Gorbenko, Efimov, Efremenko, Radoychin, Senturin, Dolgonogova, Pomochaybenko, Kalendin, Gross. In addition, by Wammen and ABTU in Kharkiv sent engineers Vasilyev Matyukhina, Vodopiyanov-graduate students and students of the Academy. Head of the Design Bureau became A.Ya.Dik, assistant chief engineer of Gorun, consultant ABTU Kulchytsky. Section chiefs were appointed: Doroshenko (control), Tarshinov (cabinet), Gorbenko (motor), Morozov (transmission), Vasilyev (chassis).
Unfortunately, any additional documents, covering the further destiny of EDB, could not be found yet. Nothing is known about A.Ya.Dike-official version of the creation of the A-20 tank (BT-20) A-32 and A-34 (T-34), his name is absent! Of all the currently available publications that in May 1938, projects wheeled-tracked tank A-20 and A-32 tracked were in Moscow M.I.Koshkin and AA Morozov. Why they? These questions remain open ...
So, on May 4 at a meeting of the Committee of Defense of the USSR discussed two projects - the A-20 and A-32. In August, they were treated to a meeting of the Supreme Military Council. As a result, both cars have been approved. However, in accordance with the views of the leaders of ABTU preference wheeled-tracked version. By November 6 the design department of the plant completed a project and model of the A-20 tank, and presented them to the Commission. In the first half of the next, 1939 A-20 tank produced in the metal.
It had a fully welded housing made of homogeneous armor. The thickness of hull plates ranged from 10 to 20 mm, with the upper front sheet positioned at an angle of 53 °.
The welded tower, structurally similar to the tower of the BT-7 arr. 1937, but somewhat larger in size (diameter of the ring in the world increased by 70 mm), installed 45-mm gun mod. 1934 paired with her machine gun DT. The second DT machine gun was located in the ball mount in the front hull, the right of the driver's hatch.
A number of components and assemblies A-20 borrowed from BT-7. Something partially redesigned, others developed anew.
The drive wheel running was carried out on six wheels, as well as the tank BT-IP. Track width at the same that the BT-7, diameter of rollers has been increased to 400 mm. The weight of the tank increased to 18t.
Test A-20 (in conjunction with the A-32) took place in July - August 1939 at the site of the plant in Kharkov. When tests revealed that both cars basically correspond to their business requirements. Since November KhPZ conducted on completion of working drawings A-20, and the tank, which reinforced the chassis, ready for testing in January 1940. As for the A-32, the decision on mass production took in favor of more tolstobronnoy car A-34.
In this regard, the plant's management appealed to the People's Commissariat to release KhPZ from the production of A-20, and charge it to another serial output for-water. This request was due to the impossibility of mass production KhPZ two types of tanks.
However, experimental work on the A-20 continued in the spring of 1940, which follows from the "list of necessary experimental work at the factory number 183 in the 1940". Apparently, the last point in the fate of the A-20 was in June 1940, the decision of the Politburo of the CPSU (b) the production of T-34 and KV. On the "twenty" in this document is silent - the factory for him was not.
It is necessary to mention the combat use of an experienced A-20 tank. First, it included the tank company Semenov formed, apparently from cars NIBTPoligona, and from mid-November - in the 22th Tank Brigade. The brigade was part of the mobile group lieutenant colonel Yermakov and was fighting in the area of Pavlovskaya Sloboda. December 1, 1941 A-20 was damaged, but four days later entered the system. At the 22th Tank Brigade until mid-December A-20 supported Dovatora cavalry, was again damaged and evacuated to the rear for repair. His fate is unknown.
Performance characteristics:
Combat weight
18000 kg
CREW, people.
4
DIMENSIONS
Length mm
5760
Width
2650
Height mm
2435
Ground clearance, mm
400
WEAPONS
45-mm gun 20K and two 7.62 mm machine gun DT
Allowance of ammunition
Shot 152 and 2709 cartridges
Aiming devices
Top telescopic sight and a panoramic TP-1
RESERVATIONS
Forehead case - 20 mm
The board case - 20-25 mm
Feed the body - 16 mm
Top and bottom - 10 mm
Tower - 25 mm
ENGINE
B-2, diesel, 12-cylinder, 505 hp power
TRANSMISSION
four-three-way transmission, the two friction clutches and two, single-board gear
CHASSIS
(on one side) 4 road wheels, front and rear drive steering wheel
SPEED
77 km \ h on tracks
83-85 km \ h on wheels
Cruising on the highway
400 km
Overcome obstacles
Wall height, m
1.20
The width of the ditch, m
2.40
Fording depth, m
1.40
MEANS OF COMMUNICATION
71TK-3 radio and intercom TPU-2
ru.wikipedia.org/wiki/%D0%91%D…
Image size
1460x820px 70.09 KB
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