Home' Asian Aviation : AAV June 2011 Contents the GEnx, to CFM56 technolog y enhancements
developed under the TECH56 programme -- to
yield a high level of compressor e ciency and stall-
free operation "with a high level of probability", the
The company began initial eCore testing in
mid-2009 at GE's altitude test facility. ose tests
were used to analyse aerodynamics, performance,
aeromechanical response, operability and the
performance of the engine's new TAPS II combustor,
which improves the efficiency of fuel burn and
reduces harmful emissions.
TAPS II is a more advanced version of the TAPS
combustor found in GE's GEnx engine, which is to
power the Boeing 787 and 747-8. e new combustor
will be key to achieving the engine's target 50-60
percent reduction in NOx emissions.
CFM says it is also looking beyond the LEAP-X,
at open rotor engine architecture.
An open rotor design would potentially add 10
percent more fuel-burn bene ts, yielding an overall
26 percent reduction, company o cials said.
Some LEAP-X technology can be adapted to
the open rotor design, but there will still need to
be dedicated technology acquisition to develop
such an engine. Challenges to be overcome include
installation and integration with the airframe and fan
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P&W has begun testing the first PurePower PW1217G
powerplant, which will power the Mitsubishi MRJ.
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