A Comprehensive Program for Measurements of Military Aircraft Emissions
Abstract
Emissions of gases and particulate matter by military aircraft were characterized in-plume by "extractive" and "optical remote sensing" technologies. Non-volatile particle size distribution, number and mass concentrations were measured with good precision and reproducibly. Time-integrated filter samples were collected and analyzed for smoke number, metals, carbon contents, and sulfate. The geometric mean diameter increased as the engine power increased, which is consistent with downstream observations. The modal diameters at the downstream locations are larger than that at engine exhaust. Elemental analysis indicated little metals were present, while most of the particulate materials were carbon and sulfate (in the JP-8 fuel). The levels of air toxic hydrocarbons were generally below the detection limits except at the idle condition. The results validated sampling and measurement techniques used for non-volatile particulate aircraft emissions, which also highlighted the needs for further research on sampling and measurement for volatile particulate matter and semi-volatile species in the engine exhaust especially at the low engine power setting.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 30, 2009
- Accession Number
- ADA606693
Entities
People
- Meng-dawn Cheng
Organizations
- Oak Ridge National Laboratory