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System and method of measuring and monitoring torque in a rotorcraft drive system

  • US 8,909,453 B2
  • Filed: 12/20/2012
  • Issued: 12/09/2014
  • Est. Priority Date: 01/12/2012
  • Status: Active Grant
First Claim
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1. A method of optimizing an operation of a rotorcraft, the rotorcraft having a tail rotor drive shaft, the method comprising:

  • storing a torque history of the tail rotor drive shaft, the torque history including a plurality of torque measurements over a period of time that indicate a degree to which the tail rotor drive shaft was torque loaded during the period of time;

    determining an actual usage of the tail rotor drive shaft during operation of the rotorcraft based upon the torque history;

    adjusting a defined life of the tail rotor drive shaft based upon the actual usage;

    wherein the plurality of torque measurements are derived from a tail rotor drive shaft torque measuring sensor system.

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