Intelligent Automation Corporation (IAC) is developing for the Air Force a system to detect the onset of turbine engine augmentor instabilities known as “rumble” and “screech” for test cells. These combustion instabilities can be potentially harmful to the engine and are known to cause premature failures in gas turbine components. The approach developed by IAC involves using a unique combinatio...

An investigation into the isolability of the location of intake and exhaust manifold leaks in heavy duty diesel engines is presented. In particular, established fault detection and isolation (FDI) methods are explored to assess their utility in successfully determining the location of a leak within the air path of an engine equipped with exhaust gas recirculation and an asymmetric twin-scroll t...

Article history: Received: 14.06.2016. Received in revised form: 01.12.2016. Accepted: 06.12.2016. Turbochargers have become widely applied to diesel vehicle engines. The mixed flow turbine type is suitable for systems where compact power sources are required with higher boost pressure. The sensitivity of the rotor to incidence effects and tendency of the flow to separate have given rise to con...

Control and Health Monitoring of complex systems such as Gas-Turbine Engines can potentially receive great benefits from the use of advanced software technologies. However, techniques such as Intelligent Agents, Neural Networks and Genetic Algorithms are predominately designed to optimally perform specific functions, while the rest of the functionality is better achieved using conventional tech...

The potential for improved performance of wave rotor cycles through the use of passage height variation is examined. A Quasi-one-dimensional CFD code with experimentally validated loss models is used to determine the flowfield in the wave rotor passages. Results indicate that a carefully chosen passage height profile can produce substantial performance gains. Numerical performance data are pres...