At this point it is up to you Zeke to provide references stating how much better the XWB94 is than the XWB84.
We are waiting for your source to backup your claims that the GE9X is “5% better than the Trent XWB”. You have stated this on several threads before, and I have corrected every time I have seen it. The GE9X and Trent XWB 97 basically first flew at the same time, there is no way GE ever had that data, as the did not even have their own data !!
What I said was
“The Trent XWB-97 (A350-1000) is not the same engine as the Trent XWB-84 (A350-900). The Trent XWB engines delivered in a couple of years will be more efficient than those already delivered via normal in service improvements.”
The proof for this is in the TCDS, the two engines are not the same. https://www.easa.europa.eu/sites/defaul ... %20XWB.pdf
The technology differences between the 84 and 97 include
“Although original plans called for the XWB-97 to generate 93,000 pounds of thrust, Rolls managed to extract additional power via a 6-percent increase in fan flow, combined with a slight change in bypass ratio and aerodynamic improvements in the larger core that increases flow. The XWB-97’s fan runs faster than those of smaller XWB units, but in a common nacelle and with unchanged aerodynamics.
Rolls says the XWB-97 turbine benefits from its use of advanced coatings and cooling technology, blade tip-clearance control for reducing “leakage” and improved materials. An enhanced combustor provides a 20-percent margin over CAEP 6 nitrous-oxide standards, and generates noise levels below QC1 arrival and QC2 departure limits.”
From https://www.ainonline.com/aviation-news ... ent-xwb-97
The manufacturer https://www.rolls-royce.com/media/press ... rvice.aspx
“While there is very little visible or operational difference between the two Trent XWB engines, the higher thrust version employs a range of advanced technologies to produce extra thrust and optimum aircraft performance.
The front fan has the same number of blades and is the same diameter, at 118 inches, but will run around six per cent faster. The engine core has been scaled up in size to cope with the consequential increased airflow into the compressor and the combustor and turbines will both run at higher temperatures.
Simon Burr, Rolls-Royce, Director of Engineering & Technology – Civil Aerospace, explains: “The Trent XWB-97 is the highest thrust engine we have ever certified. We have been working at the leading edge of technology to deliver this engine and we look forward to seeing it enter into service.”
The engine also features new materials and coatings for the high-pressure turbine blades as well as an intelligent cooling system to ensure expected performance and efficiency can be delivered at the higher temperatures generated within the turbine.”
And proof that the improve the engines would be the Trent XWB 84EP which is flying on the SQ ULR
“The Trent XWB-84EP will incorporate turbine cooling and aerodynamics improvements developed specifically for the XWB-97 engine now in development for the A350-1000, as well as from the next-generation Advance technology program.
The “EP” also includes an improved secondary air system and inter-stage sealing system from the XWB-97, as well as upgrades to the Trent XWB-84 turbine tip clearance control system that Rolls says are “based on recent improvements on other programs.” ”
From https://aviationweek.com/singapore-airs ... e-advances
So over to you....
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