Tuesday, 30 August 2016

RES Anti-Tank Rifle Cost

"Calculations regarding the cost of development of the 14.5 mm anti-tank rifle for GAU
Order #40
Code 73-P

Item
Calculations
Total
Direct spending


Main materials
Steel, other materials
1,400
Purchased parts
3 barrels, 500 rub. Each
1,500
Salaries


Machinists
1650 man-hours*3.01
4,970
Millers
650 man-hours*3.10
2,020
Planers
350 man-hours*2.50
870
Tracers
50 man-hours*3.00
150
Metalworkers
1400 man-hours*3.15
4,410
Fitters
500 man-hours*3.57
1,790
Auxiliary plant workers
100 man-hours*3.30
330
Total

14,540
Engineering-Technician works


Lead Designer
5.5 man-months*2000
11,000
Designers
3 man-months*1000
3,000
Engineer-Technologist
1.5 man-months*1200
1,800
Senior Engineers
2 man-months*1200
2,400
Engineers
0.5 man-months*1000
500
Total

18,700
Design Department Workers


Drafter
3 man-months*400
1,200
Tracer
2 man-months*300
600
Total salaries

35,040
Total direct spending

37,940
Additional spending


Work at the plants

35,040
General factory spending

17,520
Special spending


Instruments and devices

1,000
Proving grounds and transport costs

600
Ammunition for preliminary trials
1000 * 25 rubles
25,000
Trips to trials

4,000
External services

260
Total

30,860
Total additional spending

83,420
Total factory spending

121,360
3% interest

3,640
Total cost

125,000

Lead designer Rashkov
Chief of the Planning and Production Department, Rodin"

Monday, 29 August 2016

Improved T-34-85 Armour

"To: comrade I.V. Stalin

In order to increase the robustness of T-34-85 turrets, factory #183 developed a new turret design with thicker front and sides (90 and 75 mm vs 52 mm).

The weight of the new turret is equal to 4800-4900 kg, as opposed to 4500 kg weight of the turret with 52 mm thick sides produced at factory #112. As a result, the mass of the T-34-85 tank with thickened armour is 32.3-32.4 tons as opposed to 32.0 tons for a T-34-85 tank with 52 mm thick turret armour.

Friday, 26 August 2016

World of Tanks History Section: Battle at Lukhanino

The Voronezh Front, protector of the south flank of the Kursk salient, found itself in the way of a powerful German offensive. However, this scenario played out quite unlike what German commanders expected. Most problems were faced by the 48th Tank Corps, which got stuck at the first Soviet line of defense on July 5th, 1943. Even 200 Panthers, thrown into battle near Cherkasskoye where Grossdeutschland division was spinning its wheels did not improve the situation.

Only late in the evening, having joined forces with the 3rd Tank Division, the German unit managed to enter Cherkasskoye. Soviet forces were fully expelled only by the next morning. The offensive had to be developed further, along the Belgorod-Oboyan highway, right through Lukhanino.

Thursday, 25 August 2016

New Shells

"State Committee of Defense Decree #6434s
August 21st, 1944
Moscow, Kremlin

The People's Commissar of Armament (comrade Vannikov) must:
  1. Produce a trial batch of 10,000 45 mm incendiary shells for the People's Commissar of the Navy according to NKV blueprints by November 1st, 1944.
  2. Complete development of 100 mm incendiary and HE-I shells and perform trials before October 1st, 1944.
  3. After satisfactory results with the 100 mm shells, develop 130 mm incendiary and HE-I shells by a deadline negotiated with the People's Commissar of the Navy.
Deputy Chair of the Committee of Defense, L. Beria"

Wednesday, 24 August 2016

Self Propelled Heavy Howitzer

"Tactical-Technical Requirements for Supreme Command Reserve Self Propelled Artillery
  1. The main purpose of Supreme Command Reserve Self Propelled Artillery is the destruction of pillboxes and dugouts with direct and indirect fire, destruction of fortifications in settlements and railway stations, destruction of headquarters and concentrations of enemy personnel and vehicles.

Tuesday, 23 August 2016

IS-2 #1

"Shipment act #2
March 28th, 1943, Chelyabinsk

We the undersigned, Military Representative of the GBTU TU Engineer-Major I.P. Skriptsov on one side and OP-2 plant foreman of factory #100 Nosov and factory #100 OTK chief A.N. Kubintsev on the other side compose the current act to accept the IS-2 tank by the military representative of the GBTU TU and the surrender of the tank by factory #100 after factory trials.

Monday, 22 August 2016

76 mm Regimental Gun Penetration

"To the People's Commissar of Defense, comrade I.V. Stalin.

I report that HEAT shells for the 76 mm mod. 1927  regimental cannon developed by the GAU Artkom on the basis of captured German shells were tried on May 23rd at the Sofrino proving grounds.

During trials against a 50 mm cemented plate, half of all fired shots resulted in complete penetrations with a diameter of 30 mm against both a flat plates and plates angled at 30 degrees.

Saturday, 20 August 2016

Schwere Panzerbüchse 41

In 1942, the Allies captured an interesting anti-tank weapon designed for the German army and actively used on all fronts of WWII since 1914. Its distinguishing feature from other anti-tank rifles and cannons was its conical barrel, the caliber of which was larger at the breech than at the muzzle.

Officially, the gun was called 2,8 cm schwere Panzerbüchse 41 (2,8 cm s.Pz.B. 41). German nomenclature placed it into the small arms category, but both the Red Army GAU and the military ministries of Great Britain and the United States classified it as artillery. The difference in classification comes from the fact that this weapon has all the characteristics of a cannon: carriage (upper and lower), shield, mount with a recoil brake, but the aiming was done by hand, by moving the gunner's body and moving the barrel up and down.

Friday, 19 August 2016

Easy Modernization: T-45 and Others

GABTU had to reach a compromise on many issues when it accepted the T-60 tank for service. It was obvious that this tank is inferior to the T-50 in nearly all characteristics, but its production could be set up very quickly and it could be produced by the thousands. However, GABTU was seriously worried about the tank's armament. Trials of the 20 mm TNSh gun showed that its penetration was equal to the DShK high caliber machinegun. It is not surprising that the issue of improving its armament was raised even before the first prototype was built. This modernization went in several directions, one of which resulted in the T-45 tank.

Thursday, 18 August 2016

Faster, Better, Longer

"April 13th, 1939
#227064

To: Director of the Kirov factory, comrade Zaltsmann
CC: Military Representative of the AU at the Kirov Factory, Military Engineer 2nd Grade Buglak

Work on producing an experimental prototype of a tank gun 30 calibers in length is, for some unknown reason, lagging behind all reasonable timeframes, despite being a relatively simple job.

Wednesday, 17 August 2016

T-50 Problems

"To the People's Commissar of Medium Machinebuilding, comrade Malyshev

I report that the proving grounds trials of the T-50 produced at factory #174 cannot be completed in the timeframe allotted by your order #009ss issued on January 7th, 1941, due to a series of design defects discovered in the trials process.

Tuesday, 16 August 2016

TsKB-50 Aerosan Trials

"Central Committee of the VKP(b) decree II23/174 issued on December 10th, 1940, states that:
  1. TsKB-50: In accordance with the tactical-technical characteristics approved by the Committee of Defense of the SNK on December 11th, 1940, an experimental armoured aerosan must be developed, similar to the Tunguska sleds.
  2. NKVD factory #5:
    1. Assemble a full sized model in parallel with the design process, due on December 25th, 1940.
    2. Assemble a prototype by January 25th, 1941.
The assigned due dates for the model and prototype were met.

The experimental armoured aerosan consists of a Tunguska style two-skid sled 7.7 meters in length, 1.9 meters wide, with 0.4 meter wide skids (in the middle). The skis are wooden and the lower part is covered by 2 mm thick stainless steel. The skids are connected with a welded frame made from thin aircraft pipes. The frame cross-section resembled an arc with 400 mm clearance.