The fuel system of the helicopter
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The fuel system of the helicopter

The fuel system of the helicopter

 

Fuel system and its units provide:

 

  • - The fuel supply to the engine at work on the stamps of fuel, and mixtures thereof, taken for the operation of the helicopter;

  • - Automatic generation of fuel in a predetermined sequence when possible operational variants of filling fuel tanks on all flight regimes of the helicopter;

  • - Manual operation out of fuel in the correct sequence in the event of a failure of automation and for all possible combinations of working and non-working engine;

  • - The ability to separate on and off each tank motor-driven pumping and pumping fuel;

  • - The possibility of cross-feeding of fuel on highways cross the power of any group of tanks to any engine;

  • - Powered engines SU fuel pump is switched off when the swap for a given mode of the engine.

 

The fuel system must be designed and located so as to prevent the ignition of fuel vapor within the system as a result of direct attacks and shifting lightning strikes in areas with a high probability of a direct hit.

 

the fuel system of the helicopter

Schematic diagram of the fuel system:

 

  • 1 - additional fuel tanks;
  • 2 - kerosene heater KO-50;
  • 3 - pass valve filter unit;
  • 4 - strainer; 5, 6, 25, 29, 30, 33 - drains;
  • 7 - pumps HP-40VG;
  • 8 - fine filter;
  • 9 - filter units;
  • 10 - drain trap drain valve;
  • 11 - drain trap;
  • 12 - valves conservation;
  • 13 - fire hydrants;
  • 14 - Railway power of the right engine;
  • 15, 18, 21, 24 - return valves;
  • 16 - a consumable fuel tank;
  • 17 - valve shut-768600MA highway bypass fuel;
  • 19 - float valve;
  • 20, 36 - jellied mouth;
  • 22 - booster pumps ESP-40;
  • 23 - pressure alarm LED 29A;
  • 26 - external fuel tanks;
  • 27 - transfer pumps ESP-75;
  • 28, 31, 32 - shut-fuel taps;
  • 34 - solenoid valve shut-610200A.
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