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APU Gas Turbine Engine Test Cell Correlation

2007-12-19
HISTORICAL
ARP5435
This paper describes a recommended practice and procedure for the correlation of test cells that are used for the performance testing of APU (auxiliary power unit) 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. The baseline performance is generally determined at the OEM designated test facility.
Standard

APU Gas Turbine Engine Test Cell Correlation

2023-05-19
CURRENT
ARP5435A
This paper describes a recommended practice and procedure for the correlation of test cells that are used for the performance testing of APU (auxiliary power unit) 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. The baseline performance is generally determined at the original equipment manufacturer (OEM) designated test facility. Although no original equipment manufacturer (OEM) documents are actually referenced, the experience and knowledge of several OEMs 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.
Standard

Acoustical Considerations for Engine Test Cells

2018-11-21
CURRENT
ARP5759
This document discusses, in broad and general terms, the subject of acoustical considerations in engine test cells. One of the primary purposes of an engine test cell is to control the noise emanating from the operating engine in order to reduce noise in the surrounding facility and community to acceptable levels. This is done by the design and installation of specialized acoustic elements and features, which need to be fully integrated into the overall test cell design. It should be further noted, that the requirements of acoustic control are critical to the proper operation of the engine, safety of plant equipment and personnel, and meeting local and legal noise requirements.
Standard

Configuration Control for Maintaining Correlation of Gas Turbine Engine Test Cells

2022-10-05
WIP
ARP6028B
The FAA has issued Advisory Circular, AC43-207, that recommends re-correlation, trending or period checks. The FAA, AC43-207 bases their recommendation on ARP741. This paper describes a recommended practice and procedure for the configuration control requirements to maintain test cell correlation status. This is necessary to maintain performance measurement integrity, particularly when correlation approval is achieved by statistical trending. The configuration of a test facility that exists at the time when a correlation is being carried out should be "base lined" as a condition of correlation approval acceptance, and, be maintained during the time period that the respective correlation approval lasts. This defines test facility configuration control. This is due to the fact that a change in configuration may have the potential to change the established correlation factors and measured engine performance.
Standard

Configuration Control for Maintaining Correlation of Gas Turbine Engine Test Cells

2020-10-21
CURRENT
ARP6028A
The FAA has issued Advisory Circular, AC43-207, that recommends re-correlation, trending or period checks. The FAA, AC43-207 bases their recommendation on ARP741. This paper describes a recommended practice and procedure for the configuration control requirements to maintain test cell correlation status. This is necessary to maintain performance measurement integrity, particularly when correlation approval is achieved by statistical trending. The configuration of a test facility that exists at the time when a correlation is being carried out should be "base lined" as a condition of correlation approval acceptance, and, be maintained during the time period that the respective correlation approval lasts. This defines test facility configuration control. This is due to the fact that a change in configuration may have the potential to change the established correlation factors and measured engine performance.
Standard

Configuration Control for Maintaining Correlation of Gas Turbine Engine Test Cells

2009-03-13
HISTORICAL
ARP6028
The configuration of a test facility that exists at the time when a correlation is being carried out should be “base lined” as a condition of correlation approval acceptance, and, be maintained during the time period that the respective correlation approval lasts. This defines test facility configuration control. This is due to the fact that a change in configuration may have the potential to change the established correlation factors and measured engine performance. If such a change occurs then this should be judged by the respective OEM’s or designated correlation approval authorities Subject Matter Expert (SME). In some cases, this may involve consultation with the engine project customer or airworthiness authorities.
Standard

DESIGN CONSIDERATIONS FOR ENCLOSED TURBOFAN/TURBOJET ENGINE TEST CELLS

1995-10-01
HISTORICAL
AIR4869
This SAE Aerospace Information Report (AIR) has been written for individuals associated with the ground-level testing of large and small gas turbine engines and particularly for those who might be interested in upgrading their existing or acquiring new test cell facilities.
Standard

DESIGN CONSIDERATIONS FOR ENCLOSED TURBOSHAFT ENGINE TEST CELLS

2007-11-15
HISTORICAL
AIR4989
This SAE Aerospace Information Report (AIR) developed by a broad cross section of personnel from the aviation industry and government agencies is offered to provide state-of-the-art information for the use of individuals and organizations designing new or upgraded turboshaft engine test facilities.
Standard

Design Considerations for Enclosed Turboshaft Engine Test Cells

2018-11-21
CURRENT
AIR4989A
This SAE Aerospace Information Report (AIR) developed by a broad cross section of personnel from the aviation industry and government agencies is offered to provide state-of-the-art information for the use of individuals and organizations designing new or upgraded turboshaft engine test facilities.
Standard

GAS TURBINE ENGINE FUEL NOZZLE TEST PROCEDURES

2007-11-15
HISTORICAL
ARP4865
The intent of this SAE Aerospace Recommended Practice (ARP) is to define and recommend to the Aerospace Industry standardized test procedures for establishing fuel nozzle operating performance including types of tests, controlled and measured parameters, and test configurations.
Standard

GAS TURBINE ENGINE TEST CELL CORRELATION

1961-08-01
HISTORICAL
ARP741
This recommended practice considers many facets of testing which have a bearing on obtaining accurate, repeatable engine performance data. These are: ◦ TEST CELL CONFIGURATIONS ◦ TEST CELL INSTRUMENTATION ◦ ENGINE PERFORMANCE CORRECTION FACTORS ◦ TEST CELL EFFECTS ◦ INSTRUMENTATION CALIBRATION ◦ CORRELATION TEST PROGRAM
Standard

Gas Turbine Engine Fuel Nozzle Test Procedures

2013-12-10
CURRENT
ARP4865A
The intent of this SAE Aerospace Recommended Practice (ARP) is to define and recommend to the Aerospace Industry standardized test procedures for establishing fuel nozzle operating performance including types of tests, controlled and measured parameters, and test configurations.
Standard

Gas Turbine Engine Test Facility Audit Process

2018-01-04
CURRENT
ARP6196
This SAE Aerospace Recommended Practice provides recommendations for: the audit process in general; a list of specific areas of attention to be audited; maintaining the test facility in such a manner that it meets audit requirements.
Standard

Infrasound Phenomenon in Engine Test Cells

2018-01-04
CURRENT
AIR5303
This SAE Aerospace Information Report (AIR) has been written for individuals associated with the ground level testing of large turbofan and turbojet engines, and particularly those who are interested in infrasound phenomena.
Standard

TEST CELL INSTRUMENTATION

1996-11-01
HISTORICAL
AIR5026
This document discusses, in broad general terms, typical present instrumentation practice for post-overhaul gas turbine engine testing. Production engine testing and engine development work are outside the scope of this document; they will use many more channels of instrumentation, and in most cases will have requirements for measurements that are never made in post-overhaul testing, such as fan airflow measurements, or strain measurements on compressor blades. The specifications for each parameter to be measured, in terms of measurement range and measurement accuracy, are established by the engine manufacturers. Each test cell instrument system should meet or exceed those requirements. Furthermore, each instrument system should be recalibrated regularly, to ensure that it is still performing correctly.
Standard

TURBINE FLOWMETER FUEL FLOW CALCULATIONS

2007-11-15
HISTORICAL
ARP4990
This SAE Aerospace Recommended Practice (ARP) provides to the aerospace industry a procedure for the consistent and accurate calculation of fuel flow using turbine flowmeters during development, production, and post overhaul/repair gas turbine engine testing.
Standard

Trend Analysis for Maintaining Correlation of Gas Turbine Engine Test Cells

2011-03-10
HISTORICAL
ARP5758
This document describes a recommended practice and procedure for the trending of parameters to maintain the test cell correlation status. Trending is performed to monitor test cells for changes that can affect engine performance or the data acquired from engine tests.
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