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 supply of fuel to the engines when working on the brands of fuel and their mixtures adopted for the operation of this helicopter;

  • - automatic generation of fuel in a predetermined sequence with possible operational options for filling tanks with fuel in all flight modes of the helicopter;

  • - the possibility of manual control of the development of fuel in the required sequence in the event of a malfunction of the automation and with all possible combinations of the number of working and non-operating engines

  • - the possibility of separate switching on and off of each tank electrically driven pump for pumping and pumping fuel;

  • - the possibility of cross-supply of fuel through the cross supply lines from any group of tanks to any engine;

  • - power supply of SU engines with fuel with pumping pumps off for given operating modes of engines.

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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