Turbine Engines Trend Development

Verifiable Control System Development for Gas Turbine Engines

A control software verification framework for gas turbine engines is developed. A stability proof is presented for gain scheduled closed-loop engine system based on global linearization and linear matrix inequality (LMI) techniques. Using convex optimization tools, a single quadratic Lyapunov function is computed for multiple linearizations near equilibrium points of the closed-loop system. Wit...

Millimeter-scale, Mems Gas Turbine Engines

The confluence of market demand for greatly improved compact power sources for portable electronics with the rapidly expanding capability of micromachining technology has made feasible the development of gas turbines in the millimeter-size range. With airfoil spans measured in 100’s of microns rather than meters, these “microengines” have about 1 millionth the air flow of large gas turbines and...

Prognosis of Faults in Gas Turbine Engines

A problem of interest to aircraft engine maintainers is the automatic detection, classification, and prediction (or prognosis) of potential critical component failures in gas turbine engines. Automatic monitoring offers the promise of substantially reducing the cost of repair and replacement of defective parts, and may even result in saving lives. Current processing for prognostic health monito...

Anomaly Detection in Aircraft Gas Turbine Engines

Development, Implementation and Validation of a Vibration Expert System for Gas Turbine Engines

With the adoption of a condition based maintenance philosophy, a major gas turbine engine manufacturer has initiated a project to develop and implement an Expert Diagnostic System (EDS) to supplement its automated machinery vibration condition assessment program. The goal of this work is to enhance operational readiness, to promote maintenance self-sufficiency and to reduce overall life-cycle c...