12% less fuel burn per seat than any other aeroplane?
Yea, that was my thought as well.. if you cram 450 people into a 777X and only 489 into the A380, then I'm willing to believe those numbers. That would only be a paper exercise of course, because the levels of comfort wouldn't be remotely comparable. But then again, that's the typical Boeing marketing song.
Yes of course. I'll believe that the 777X beats the A351 by some margin, in fact, it absolutely has to, otherwise it loses its right to exist. A bigger airplane has to justify its bigger operational and financial risk by being more economical than the competition, this is true for the A380, the 777X and any other airplane. If the 777X beat the A380 by any margin, it would kill it.
Post by Flying Dutchman on Nov 18, 2013 17:13:18 GMT 1
Yes and it will be newer than A350-1000 when completed. But if it beats A380 it would still be possible to upgrade the A380 with new engines, modern wing-tips and lighter materials etcetera. (If worth the investment.)And the Boeing 747-8I will get a even tougher time.
Yes and it will be newer than A350-1000 when completed.
Well, "new" is relative. The 777X will have new engines, a greater wingspan, new materials and wider cabin, but all these innovations are constrained in the design of the old 777. Granted, the 777 is an amazing airplane, but the 777X is not as good as it could have been, were it a brand new design. The A350-1000 on the other hand is all-new.
But if it beats A380 it would still be possible to upgrade the A380 with new engines, modern wing-tips and lighter materials etcetera.
I don't think new engines and lighter materials would cut it, if the 777X actually beat the A380. The A380 is said to beat the current 77W by some 20%, my estimate is that the 777X will come within 5-6% of the A380's CASM. That's very close. New engines might do the trick, or they might not. I don't believe we'll see new wingtips, the A380 is restricted to a span of 80m, so there's not much in terms of raked wingtips you can do. But people often overestimate what you can do with new wingtips. For new wingtips to give you a lot of savings, the old wingtips have to be pretty bad. The A380's wingtips though are only 10 years old. It stands to reason that they do their job sufficiently well. Raked wingtips are the latest rage in the aviation world, but really, wingtip fences work fine, too. Airbus incorporates all kinds of weight savings into their airplanes all the time, so newer and lighter materials are practically a given, this is common practice.