compressor surgefree margin. The interstage bleed system
automatically unloads the compressor of a small amount of air during
engine acceleration. The antiicing system supplies hot air, under
pressure, to prevent icing of the inlet housing areas and inlet guide
vanes. Oil is supplied for lubrication by the oil pressure supply
system and is scavenged by the scavenge oil system. The torquemeter
is a hydromechanical, torquemeasuring device that indicates engine
torque in psi. Ignition for starting is produced by a highenergy,
mediumvoltage, capacitordischarge system. Exhaust gas temperature
is measured by six thermocouples inserted in the exhaust gas flow.
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