AAAR 37th Annual Conference October 14 - October 18, 2019 Oregon Convention Center Portland, Oregon, USA
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Measurement of Aircraft Engine Soot Emissions using the ESCOM – the Engine Soot Compliance Monitor
ANDREW FREEDMAN, Zhenhong Yu, Richard Miake-Lye, Timothy Onasch, Aerodyne Research, Inc.
Abstract Number: 206 Working Group: Instrumentation and Methods
Abstract The International Civil Aviation Organization (ICAO) has set emissions standards for non-volatile PM (nvPM) emissions, primarily light absorbing carbon, from aircraft engines. It relies on the SAE E-31 Committee to draw up specific technical standards for the measurement of these emissions as well as certification procedures for nvPM emission monitors. Currently, two instruments have been certified with the committee’s criteria. In order to meet the need for another measurement approach, Aerodyne Research is developing the Engine Soot Compliance Monitor (ESCOM) based on its CAPS PMssa monitor.
The ESCOM monitor, operating on CAPS technology, provides an accurate mass-based measurement of nvPM emissions from aircraft engines that can meet the requirements for ICAO-based compliance testing. In addition to measuring the mass-based emissions, the ESCOM provides a real-time measure of the emission index and single scattering albedo (SSA). The Aerodyne ESCOM monitor was characterized in the laboratory using flame soot and participated in the EPA sponsored VARIAnT2-4 studies and NASA sponsored ND-MAX campaign. Results will be shown from these field tests, which involved sampling from in-use, on-wing engines and engines on test stands burning various types of biofuel mixtures as well as standard jet fuel.