Pas signé cet article, je cite !
Le GP900 n'aimerait pas le sable, le GP7200 serait 2% plus économique ... bon, à vérifier ...
http://mailchi.mp/a75d95157acc/airinsight-weekly?e=3a37f23dd7
Of the two current engines on the A380, Emirates decided to switch from Engine Alliance to Rolls-Royce. Emirates clearly is trying to push for better numbers. The switch may yet turn out to be a mistake because the Rolls-Royce Trent 900 does not handle the dusty conditions in Dubai as well as the GP7200. Emirates will take 25 A380s with the Trent. We understand that the follow on 25 on order are not assured to Rolls-Royce. Rumor has it that it that Qantas is seeing engine impacts from switching from Singapore to Dubai. If the Trent 900 proves to require more cleaning and repair, the chances are better than even that the GP7200 comes back. Even now, the GP7200 has a better fuel burn by about 2%.
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However, Mr. Clark did say this: “If I put those winglets on our current fleet and they improve the performance by 4%, then we’d bite their arms off. I think they’d probably guarantee 2.5% so you know you’ll probably get a bit more than that… and I would look at it, depending on the cost of retrofit – if it’s going to cost me $10 million a pop then we probably wouldn’t do it.”
Reading the tea leaves it seems to us that the game being played looks something like this. Emirates is sympathetic to replacing its older (early and heavy) A380s with new ones. The A380 has been highly supportive to the airline’s growth. But to get the deal, Airbus must move from its current position. Emirates wants those winglets to be retrofittable. How does Airbus accomplish this?