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== BEARCAT: A heavily instrumented Turboshaft == | == BEARCAT: A heavily instrumented Turboshaft == | ||
− | BEARCAT is based on a MAKILA turboshaft. | + | BEARCAT is based on a MAKILA turboshaft whose sectional a cross-sectional view is shown figure 1, while main characteristics are summarized in table 1. |
The main purpose of BEARCAT is to generate an extensive data base which will be used to validate CFD codes, transient thermal codes, … and models. To address these concerns, it was felt necessary to instrument an engine within the hot temperature / high pressure region, by means of a metrology generally implemented on partial test rig and allowing a fine characterization of local unsteady characteristics of encountered flows. | The main purpose of BEARCAT is to generate an extensive data base which will be used to validate CFD codes, transient thermal codes, … and models. To address these concerns, it was felt necessary to instrument an engine within the hot temperature / high pressure region, by means of a metrology generally implemented on partial test rig and allowing a fine characterization of local unsteady characteristics of encountered flows. | ||
The instrumentation implemented on BEARCAT is summarized in table 2. Special attention was given to the characterization of secondary flows and boundary conditions in terms of temperature (mass and flow) and pressure, in order to characterize the machine performances. | The instrumentation implemented on BEARCAT is summarized in table 2. Special attention was given to the characterization of secondary flows and boundary conditions in terms of temperature (mass and flow) and pressure, in order to characterize the machine performances. | ||
− | + | In another hand, the main flow can be is investigated by means of probes implemented at 7 sections, from the Combustor inlet to the HP-Turbine outlet. For each section, measured values are indicated in figure 2. Note that only one probe can be implemented at a time. | |
The probe is being automatically traversed into the engine thanks to a versatile device called SYSPAC. This device performs also the data acquisition, independent of the probe type, it performs the data analysis and associates the data to the main engine data collected from the Human Machine Interface. | The probe is being automatically traversed into the engine thanks to a versatile device called SYSPAC. This device performs also the data acquisition, independent of the probe type, it performs the data analysis and associates the data to the main engine data collected from the Human Machine Interface. | ||
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− | Table 2: | + | Table 2: Measurements implemented on BEARCAT. |
== Type of running to be considered == | == Type of running to be considered == |