The key objective of the SAMPLE II Study was to quantify the effects of the sample transport system on particulate matter from the exhaust of an aircraft engine to the measurement instruments. To achieve this a series of experiments were undertaken, each designed to produce realistic, quantifiable and reproducible conditions that may be used to test the particulate emissions in terms of number, size and mass from gas turbine engine exhausts. A first series of tests were conducted at the exhaust of a hot end simulator simulating aircraft engine particulate emissions. These measurements were completed with large modern engine tests.
The report details the methods, results and conclusions that are used within the SAE E-31 Particulate Matter subcommittee responsible for the drafting of the ARP on mass and number measurements of non-volatile particulate matter. This ARP is needed to provide the Committee on Aviation and Environmental Protection (CAEP) within ICAO with a particulate matter certification requirement.