Like its predecessors, Siemens’ first Hybrid Burner Ring® machine (Becker et al., 1995) underwent an extensive experimental development and test programm prior to its introduction to the market.

The present paper describes the philosophy of prototype testing, some of the challenges encountered in instrumenting the machine and the methodology and experimental techniques used to solve the problems. In particular, it describes some of the advanced implementations of blade vibration measurements, optical pyrometry and other temperature measurements, and techniques to determine efficiency.

The experimental results confirm the design of the model V84.3A gas turbine and show some potential for further improvements.

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