What does the torquemeter indicate?

What does the torquemeter indicate?

• A. Engine RPM
• B. Shaft Horsepower Available to Drive a Propeller or Rotor
• C. Oil Pressure
• D. Vibration Level

Answer: (B)

The main idea being tested is how torque on the propeller shaft relates to the power actually delivered to drive the propeller or rotor. A torquemeter measures the twisting force on the shaft, and the power available to drive the propeller is this torque combined with the shaft’s rotation speed. In other words, shaft horsepower equals torque times rotational speed (HP = torque × RPM, with the appropriate unit conversion). So the torquemeter indicates the shaft horsepower available to drive a propeller or rotor. This is distinct from engine RPM, oil pressure, or vibration level, which are monitored by other gauges or sensors.

The main idea being tested is how torque on the propeller shaft relates to the power actually delivered to drive the propeller or rotor. A torquemeter measures the twisting force on the shaft, and the power available to drive the propeller is this torque combined with the shaft’s rotation speed. In other words, shaft horsepower equals torque times rotational speed (HP = torque × RPM, with the appropriate unit conversion). So the torquemeter indicates the shaft horsepower available to drive a propeller or rotor. This is distinct from engine RPM, oil pressure, or vibration level, which are monitored by other gauges or sensors.