Tracking and Control of Gas Turbine Engine Component Damage/LifeThis paper describes damage mechanisms and the methods of controlling damages to extend the on-wing life of critical gas turbine engine components. Particularly, two types of damage mechanisms are discussed: creep/rupture and thermo-mechanical fatigue. To control these damages and extend the life of engine hot-section components, we have investigated two methodologies to be implemented as additional control logic for the on-board electronic control unit. This new logic, the life-extending control (LEC), interacts with the engine control and monitoring unit and modifies the fuel flow to reduce component damages in a flight mission. The LEC methodologies were demonstrated in a real-time, hardware-in-the-loop simulation. The results show that LEC is not only a new paradigm for engine control design, but also a promising technology for extending the service life of engine components, hence reducing the life cycle cost of the engine.
Jaw, Link C. (Scientific Monitoring, Inc. Tempe, AZ United States)
Wu, Dong N. (Scientific Monitoring, Inc. Tempe, AZ United States)
Bryg, David J. (Scientific Monitoring, Inc. Tempe, AZ United States)
August 21, 2013
February 1, 2003
Publication: Ageing Mechanisms and Control Symposium