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- Joined: 21 Jan 2014 16:02
Technical Lieutenant I.Livchak
Heating and ventilation German armored hood.
In the newspaper " Red Star " on September 3, 1943 in the "Journal of Military Engineering» ? October 1943 for a description of the German battleship cap ( crab) . Tests have the original fan and oven installed in armored decks, got a number of interesting data that may be useful to familiarize officers engineering troops as the enemy armored covers systems on all fronts and captured by our troops , which can be used successfully .
Bronevoj hood mounted machine gun with mechanical ventilation .
air inlet is above the top of the second room through the hole ( 1) provided with a metal grid ( see fig. ) . The air passes through the conduit ( 2) for the blower and the conduit ( 3) is expelled through the exhaust port (4 ) outwards.
possible partial release of air through the heat of the fireplace. For this purpose there pipe (5) connecting the pipe (3 ) with an ash -pit furnace . In the pipe there is a valve (6 ) , which regulates the amount of air flowing through the oven , and the oven is turned off from the ventilation duct .
In addition to drawing air through the hole ( 1 ) , the suction of air out of the case with empty cartridges produced via a flexible metal hose ( 7 ) connecting vent box ( 2 ) . The amount of air sucked through gilzosbros is approximately 25% of the total supply air .
Extraction by a centrifugal fan ( diameter of the suction holes - 70 mm ) . with pedal power
shift work for the first and second numbers of machine gun in the blower are two pedals.
All vents are made of black iron with welded seams , and connecting rubber couplings are made with metal buckles and flat flanges .
through ( 3) in connection with the hole covered with mesh metal exhaust the exhaust port on the outside has a protective visor. The air flow in the building is through existing holes and leaks.
Studies in research and testing institute of engineering tests have shown that the performance of the ventilation system varies 200-280 m3/hour in 40-70 minutes down the pedal is pressed. Nominal number average swing pedal fan must be considered 50 - 60 per minute . Oscillation number 80 to 90 minutes should be considered as a maximum , with such continuous operation intensity not more than 5 minutes .
In continuous operation of the ventilation system intensive gun shot "MG - 34" brings the concentration of carbon monoxide in a cell as a maximum of 1 mg / l ( in the closed hatch and open holes for the periscope ) .
In any ventilation inactive Intensive shooting a machine gun is impossible. Released during cooking gas and gas barrels of gunpowder burned fat quickly fill a small volume structures and make the air unbreathable completely .
This, by the way, is possible with the basic tools to deal with armored covers the lock near recommend silencing exhaust ventilation and heating (if any) holes grass, clay , earth or snow that is not difficult.
Such an event would not be able to disable the lid, but the intensity of the fire was kept to a minimum . Available in the calculation of personal protective ventilation inactivity will not have substantial support , and that can hold carbon monoxide.
Heating cover armor MG carries welded iron stove , which comprises a combustion chamber and the convection part fan.
gases from the combustion chamber into the convection part , where they pass through three fittings and pipes enter the chimney. Convection tubes in free form outside air passage are washed through the holes and the network.
Fireplace appears through the hole axis , inserted into the armored decks during transport. The tube consists of two elements : a portion 5 located inside the structure , and the portion 6 is located outside .
a combustion chamber ash pit furnace divided by a grid which is made of thick sheet metal 2 - 3 mm with openings 8 to 10 mm ; grid welded to the furnace wall. In blowoff and along the perimeter of the opening of the cooker to be adapted asbestos cord zachekanen oven providing closure density .
Baked idle ventilation can work without blowing ash door open, but in this case due to the small diameter and the height of the chimney is a possibility of smoke structures.
By using blasting, with open valve (6 ) , both oven doors must be closed carefully . In this case , the relative termetichnost furnace and fireplace construction makes it impossible to smoke.
Having flown under the grill itself and the height of the boot over the bottom hole grille design ( 17 cm) oven lets shoot a variety of fuels (wood , coal, peat) .
However, in the operating instructions to avoid exposure opponent recommended only use the stove with coal. For the same reason the instructions recommended by firing a burst of machine gun under the grille off . Without the need for the construction of the furnace can not be installed , in which case the hole in the pipe (3 ) to the nozzle (5 ) closes screwcap , and the hole in the lid , which is derived through the fireplace, closed a massive metal cap .
oven is made of iron sheet 1.2mm thick , double-walled firebox , chimney - black iron roofing . Stove set in wooden legs on the special board and bolt attached to the bottom of the structure.
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Knocked out German pillbox in valley between Vallerotonda and Sant'Elia a Pianisi on 15 February 1944
http://ww2online.org/image/knocked-out- ... ruary-1944
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