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| Research & Development |
 Research forms the basis for our superlative and technically innovative products and services. For this reason, ever since it was founded, IfTA GmbH has worked on research projects in collaboration with a diverse range of industrial partners and tertiary education establishments. These projects have tackled new topics associated with thermoacoustic oscillation and active control of compressor instabilities. The aim of our research activities is to consistently provide our customers with the very latest innovative service strategies and products to help them improve their efficiency and quality levels.Active control of compressor instabilities In the context of an aerospace research project funded by the German federal state of Bavaria (Freistaat Bayern), and in collaboration with the German company MTU and the Jet Propulsion Institute (Institut fuer Strahlantriebe) at the German Armed Forces University (Universitaet der Bundeswehr) in Munich, the applicability of active control of compressor instabilities was examined on an aero gas turbine. The aim of this research project was to demonstrate that it is possible to use active measures to move the surge line of a compressor successfully to such a point that the compressor is able to operate more efficiently. As a controller in this project, a modified form of the AIC system was employed. This had already been tried and tested for investigations of active instability control of combustion oscillations on land-based gas turbines. With the help of this controller, and with an ingenious actuator system, it was possible in the course of this research project, which extended over a three year period, to deliver highly successful verification of the functional capability of this technology. In overall terms, this project succeeded in actively moving the surge line across the complete speed range of the compressor, creating scope for industrial application of this innovative technology. Advanced adaptive control concepts for active suppression of combustion oscillations In collaboration with the Turbo-Engine Institute (Institut fuer Turbomaschinen und Fluid-Dynamik-TFD) at the University of Hanover (Universitaet Hannover), a research project funded by the AIF was launched in 2003 to develop new and advanced adaptive control concepts for active suppression of combustion oscillations. The aim of this project was to improve the efficiency and quality of our tried and tested AIC system, in service around the globe, through the use of new approaches to control functions and actuator technologies, thereby further increasing customer satisfaction levels with this technology.
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