% of maximum torque.

% value of maximum RPM.

The Engine Pressure Ratio (EPR).

% value of maximum power.

a single-phase generator connected to a synchronous motor.

a permanent magnet turning inside a non magnetic drag cup.

a three phases generator connected to an asynchronous motor.

a single-phase generator connected to an asynchronous motor.

smoke detector.

turbine temperature probe.

vibration detector.

pressure sensor.

ratio Pt7 / Pt2.

ratio Pt2 / Pt7.

the twist of a torque shaft of a known length.

change in frequency between the torque shaft and the reference shaft.

be over-reading during climbs.

constantly indicates a 500 feet per minute climb.

return to, and indicate, zero feet per minute.

be under-reading during climbs.

Standard approach speed range.

Normal operating speed range.

Flap operating speed range.

Lowest part of the caution speed range.

the ratio of the compressor outlet total pressure to the compressor inlet total pressure.

the ratio of the turbine outlet total pressure to the compressor inlet total pressure.

the ratio of the turbine outlet total pressure to the ambient total pressure.

the difference between the compressor inlet total pressure and the turbine outlet total pressure.

556 kt

647 kt

479 kt

466 kt

temperature measured on the surface of an aircraft in flight, and is equal to or less than SAT.

ambient temperature measured outside an aircraft, and it CANNOT be higher than TAT.

average temperature measured outside an aircraft, and is equal to or less than TAT.

maximum temperature attainable by the air when brought to rest, and is equal to or less than TAT.

Volumetric mass and di-electric resistance of the fuel.

 quantity of fuel movement.

 pressure and temperature of the fuel.

Volume and viscosity of the fuel.