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Clear the Air

"January 27th, 1941
Order of the People's Commissar of Medium Machinebuilding and People's Commissar of Heavy Machinebuilding

Stationary trials performed at factory #75 of air filters for V-2 tank engines produced at factories ##75, 174, and 183 showed that the air filters do not satisfy the requirements for air filters established by Committee of Defense decree #428ss issued on November 19th, 1940.

Considering the exceptional importance of equipping V-2 tank diesels with functional air filters, I decree that:
  1. Directors of factories ##75, 174, 183, the Kirov factory, STZ, and NATI must develop and test air filters for the V-2 diesel engine by March 15th of this year that guarantee at least 95% purity of air for 10-12 hours of work in dusty conditions without cleaning, according to the following parameters:
    1. Coefficient of air cleaning of 97-98% in conditions of 1 g of dust per cubic meter (dust with 0.006 to 0.020 mm grains).
    2. Loss of at most of 750 mm of water pressure (no more than 5% of power).
    3. A design that is simple to produce, reliable, and easy to use.
    4. A design that can be cleaned in the field by one person without special instruments in no more than 10-15 minutes.
    5. Moving the air filter from the engine to an unused part of the tank is permitted.
    6. If an oil bath filter is used, it must not permit the oil to get into the engine.
    7. The design of the air filter must be in cohesion with the air flow in the tank.
  2. Establish the following awards for the best air filter design for the T-34 and KV-1 tank:
    1. 1st place: 75,000 rubles
    2. 2nd place: 50,000 rubles
    3. 3rd place: 25,000 rubles
  3. The following commission is formed to test the developed air filters:
    1. Chair: M.M. Zatravkin (NATI)
    2. Members:
      1. A.A. Lavrushenko (GABTU)
      2. V.M. Kogan (GABTU)
      3. E.P. Dedov (Kirov factory)
      4. G.I. Nesterov (factory #174)
      5. Yu.B. Margulis (factory #75)
      6. Fedotor (factory #183)
        The commission is to develop the trials program, conditions of trials, location of trials, and condition of the contest, and present it to the People's Commissar of Medium Machinebuilding for approval by February 1st.
  4. Comrade Tolkunov (NATI) is to develop a uniform methodology and parameters for testing air filters from all tank factories (taking into account experience from factories ##75, 174, and 183) by February 13th, 1941.
People's Commissar of Medium Machinebuilding, V. Malyshev
People's Commissar of Heavy Machinebuilding, A. Yefremov"

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