Turbofan and Turbojet Gas Turbine Engine Test Cell Correlation
ARP741D
This SAE Aerospace Recommended Practice (ARP) describes a recommended practice and procedure for the correlation of test cells that are used for the performance testing of turbofan and turbojet engines. Test cell correlation is performed to determine the effect of any given test cell enclosure and equipment on the performance of an engine relative to the baseline performance of that engine. When baseline testing is performed in an indoor test cell, the baseline performance data are adjusted to open air conditions. Although no original equipment manufacturer (OEM) documents are actually referenced, the experience and knowledge of several OEM’s contributed to the development of this document. Each engine Manufacturer has their own practices relating to correlation and they will be used by those OEMs for the purpose of establishing certified test facilities.
Rationale:
Revised to include some background into the design of a typical thrust measurement system, some background on the center line pull technique (why and how), and to discuss conditions where a center line pull may not be required.
Related Topics:
Gas turbines
Turbofan engines
Turbojet engines
Engine control systems
Marine engines
Exhaust gas recirculation (EGR)
Manufacturing systems
Research and development
Also known as: SAE ARP 741
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