Accession Number : ADD007536

Title :   Apparatus and Process for Measuring the Torque Transferred by Engine Shafts.

Descriptive Note : Patent Application,


Personal Author(s) : Levins,Dave B

Report Date : 20 Aug 1979

Pagination or Media Count : 28

Abstract : 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)

Descriptors :   *Patent applications, *Measuring instruments, *Torque, *Shafts(Machine elements), *Gas turbines, Power measurement, Angular motion, Deflection, Signals, Modulus of elasticity, Resistors, Turboprop engines, Aircraft engines, Moment of inertia, Temperature, Inventions

Subject Categories : Test Facilities, Equipment and Methods
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE