I found out that the GEnx engine uses a TAPS (Twin Annular Premixing Swirler) combustor. Is it a single or dual annular combustor ?
What is a TAPS combustor and how does it differ from any other annular combustor? [duplicate]
1$\begingroup$ Probably a duplicate of your other question: What is the difference between single and dual annular combustor?. As you don't have yet selected an answer, you could just request about TAPS particularity in the same post. $\endgroup$– minsOct 22, 2017 at 13:33
See this question. It is a single annular combustor (one ring of full nozzles). I think that "twin" refers to the fact that within a single fuel nozzle, there are two different fuel streams: the main stream and the pilot stream. This video might also help explain it a bit.