TM55-2840-251-23
Section III PRINCIPLES OF OPERATION (Continued)
1-13 IGNITION CIRCUIT
The ignition circuit comprises: ignition regulator, ignition
harness and glow plugs. The ignition regulator is
mounted on the accessory gearbox and contains
electron tubes, which regulate the current flow to the
glow plugs. At low temperatures the resistance to
current flow is low, insuring maximum supply to the
plugs thus an initial current surge is provided to rapidly
heat the plugs for fast engine "light up". The glow plugs,
installed on the gas generator case, are essentially
heating elements that ignite the fuel sprayed into the
combustion chamber.
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