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Procedure for the Continuous Sampling and Measurement of Non-Volatile Particulate Matter Emissions from Aircraft Turbine Engines
- Aerospace Standard
Published May 19, 2021 by SAE International in United States
Downloadable datasets availableAnnotation ability available
This SAE Aerospace Recommended Practice (ARP) describes recommended sampling conditions, instrumentation, and procedures for the measurement of non-volatile particle number and mass concentrations from the exhaust of aircraft gas turbine engines. Procedures are included to estimate sampling system loss performance. This ARP is not intended for in-flight testing, nor does it apply to engines operating in the afterburning mode.
This ARP is intended as a guide toward standard practice and is subject to change to keep pace with experience and technical advances.
This ARP6320 document revision provides updated nvPM mass calibration and System Operability information. The nvPM mass calibration data reduction method has been revised, and additional detail supplied on the use of splitters for nvPMmi calibration. Both the Diluter1 temperature control and the Dilution Factor 2 check method 1 have been revised. The “nvPM System Compliance and Operational Checklists” Excel spreadsheet is now presented as two separate checklist documents to simplify use: nvPM System Compliance Checklists v1_4 and nvPM Operations Compliance Checklists v1_4. Additional cross-references to ICAO Annex 16 Volume II1 are now included in both checklists.
Data Sets - Support Documents
|Table 1||nvPM sampling and measurement system flow schematic terminology|
|Table 3||Performance specifications for nvPM mass instruments|
|Table 4||Calibration sample desired EC loading parameters|
|Table 5||Recommended temperature profile for the ASTM D6877-13 method|
|Table 6||VPR requirements|
|Table 7||CPC requirements|
|Table 8||Parameters used for nvPM EI calculations|
|Table 9||Values of parameters in nvPM equations based on several simplified cases|
|Unnamed Dataset 9|
|Unnamed Dataset 10|
|Table 10||nvPM measured parameters reported during engine tests|
|Table A2||System parameters required to calculate particle size-dependent transport losses|
|Unnamed Dataset 13|
|Table A3||Breakdown of sections and major components of calibration system|
|Table A4||Example of relative uncertainty values used for EI and EI calculations|
|Table A5||Example values|
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