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First gaseous Sulfur (VI) measurements in the simulated internal flow of an aircraft gas turbine engine during project PartEmis
Author(s) -
Katragkou E.,
Wilhelm S.,
Arnold F.,
Wilson C.
Publication year - 2004
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2003gl018231
Subject(s) - cruise , gas turbines , environmental science , exhaust gas , turbine , mass flow , stage (stratigraphy) , air mass (solar energy) , sampling (signal processing) , meteorology , analytical chemistry (journal) , chemistry , aerospace engineering , geology , mechanics , physics , engineering , environmental chemistry , thermodynamics , mechanical engineering , electrical engineering , paleontology , boundary layer , filter (signal processing)
Gaseous S(VI) (SO 3 + H 2 SO 4 ) has been measured by chemical ionization mass spectrometry (CIMS) in the simulated internal flow of an aircraft gas turbine in a test rig at ground level during the PartEmis 2002 campaign. Building on S(VI) and calculated total sulfur S T the abundance ratio ε = S(VI)/S T was determined. The measurements to be reported here were made at two sampling points, for two engine test conditions representative of old and modern aircraft cruise and for a fuel sulfur content FSC = 1270 ppm. For both cruise conditions the measured ε increased with increasing exhaust age from the high pressure to the low pressure stage. For each pressure stage ε was higher in the modern cruise condition. The maximum ε (2.3 ± 1.2%) was obtained for modern cruise and the low pressure stage. Our present data suggest that modern engines have a somewhat higher conversion efficiencies than old engines.