Apparatus and Process for Measuring the Torque Transferred by Engine Shafts.
DEPARTMENT OF THE ARMY WASHINGTON DC
Pagination or Media Count:
The torque transferred by the power turbine shaft of a gas turbine engine is accurately measured by detecting the angular deflection of the shaft and providing an electrical signal which is representative of the deflection. This deflection signal is adjusted to compensate for variances in the modulus of elasticity for the shaft, such variances occuring by reason of changes in the shaft temperature. The adjustment is effected by impressing the deflection signal across two series-connected resistors, one of which remains at a substantially constant resistance over the operating temperature of the shaft, while the other is located adjacent to the shaft and varies in response to the temperature of the shaft. The adjusted signal is derived from across the resistor of constant resistance. Author
- Test Facilities, Equipment and Methods
- Jet and Gas Turbine Engines