Procedure for the Continuous Sampling and Measurement of Non-Volatile Particulate Matter Emissions from Aircraft Turbine Engines
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.