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【范围】
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This report provides current practice measurement methods for quantifying nonvolatile particle matter at the exit plane of
aircraft gas turbine engines. This document contains detailed information for many instruments and techniques, described
in AIR5892A, that have been applied in aircraft engine field tests since AIR5892A was first issued in April 2003. There are
four sections, identified as Technical Appendices (TA), presenting measurement techniques, sampling, and quantification
of nonvolatile particles. The sections are written in the format of Aerospace Recommended Practice (ARP) documents
and intended to progress to recommended practices upon overcoming existing technical challenges. Many important
technical advances have been accomplished that comprise the Aircraft Engine Exhaust Nonvolatile Particle Matter
Measurement Method Development techniques described in TA A: Particle Mass,TA B: particle Number and Size,TA C:
Particle Sampling, and TA D: Calculation of Particle Number and particle Mass Emission Indices.
Various measurement methodologies and operability and compatibility issues are described within the TAs. The TAs
briefly discuss degrees of sensitivity, accuracy, repeatability, and test operations acceptability for each measurement
discipline. They reflect that many important technical advances have been accomplished for measurement techniques of
nonvolatile particles. Additional research is required to transition the TAs to Aerospace Recommended Practices.strRefField
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