Demonstration of Novel Sampling Techniques for Measurement of Turbine Engine Volatile and Non-Volatile Particulate Matter (PM) Emissions
Technical Report,11 Dec 2009,30 Jun 2016
AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH WRIGHT-PATTERSON AFB United States
Pagination or Media Count:
This project consists of demonstrating the performance and viability of two devices to condition aircraft turbine engine exhaust to allow the accurate measurement of total volatile and non-volatile particulate matter PM emissions by promoting condensation of volatile species. A device to separate volatile from non-volatile species from turbine engine exhaust was also evaluated for the measurement of only non-volatile PM. These measurements are needed to assess the environmental burden of military aircraft for regulatory purposes. Non-volatile PM are those found at the engine exit temperature and pressure conditions, whereas volatile PM are those formed from organic and sulfur compounds via gas to-particle reactions in the atmosphere. The total PM devices were evaluated by comparing the PM characteristics to those found in plume samples using exhaust from a T63 turboshaft and an F117 turbofan engine. Results show that the devices can partially simulate the thermo physical processes in the plume that lead to the formation of volatile PM. However, several of the performance criteria for these devices were not met. A vapor particle separator met the performance goals and shall be considered for non-volatile PM systems after further evaluations.
- Physical Chemistry