Since the end of 1998, the new V84.3A has been under investigation in the Siemens Gas Turbine Development and Manufacturing Center in Berlin. Especially for the testing of gas turbine prototypes, Siemens runs a test bed which allows full load tests with speed variations. Hence the engine can be tested at the extremes of real gas turbine operation conditions.
Within the range of the investigations there have been combustion optimization and performance tests at full and part load. A focus was the testing of various kinds of water injection. Additionally blade vibration measurements in the turbine and the compressor, surface temperature measurements using thermal paint and pyrometry, and aerodynamics measurements using five-hole probes have been performed.