Future Trends in Commercial Aviation Engines’ Combustion - Novel Combustion Concepts for Sustainable Energy Development - page 140

Fig. 26 Gen-4 TAPS focus is on continuing improvements including providing additional mixing
and fuel circuit for the pilot to further improve NO x and operability characteristics; reproduced
from US Patent 7,762,073 July 27, 2010
Fig. 27 Takeoff EINO x versus SLSS takeoff pressure ratio of the TAPS-based engines. The AST
TAPS engine data scaled from a full-scale annular rig testing for the GE90-94 whereas the CFM-
TAPS data is from a technology demonstrator engine. GE N + 2 Tech data from a sector test
reported by Lee et al. ( 2013 )