Publication Date:
2019-07-13
Description:
A low NO(x) emissions combustor has been demonstrated in flame-tube tests. A multipoint, lean-direct injection concept was used. Configurations were tested that had 25- and 36- fuel injectors in the size of a conventional single fuel injector. An integrated-module approach was used for the construction where chemically etched laminates, diffusion bonded together, combine the fuel injectors, air swirlers and fuel manifold into a single element. Test conditions were inlet temperatures up to 810 K, inlet pressures up to 2760 kPa, and flame temperatures up to 2100 K. A correlation was developed relating the NO(x) emissions with the inlet temperature, inlet pressure, fuel-air ratio and pressure drop. Assuming that 10 percent of the combustion air would be used for liner cooling and using a hypothetical engine cycle, the NO(x) emissions using the correlation from flame-tube tests were estimated to be less than 20 percent of the 1996 ICAO standard.
Keywords:
Aircraft Propulsion and Power
Type:
NASA/TM-2002-211347
,
NAS 1.15:211347
,
E-13163
,
Conference on Technologies and Combustion for a Clean Environment; Jul 09, 2001 - Jul 12, 2001; Oporto; Portugal
Format:
application/pdf
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