|Quoting Pavlin (Reply 2):|
Are you sure? Isn't a bit to early to weight a plane that hasn't even been built?
If they didn't have any issues about needing to keep the weight down, then the target would have been too high. It doesn't take until the plane is built for weight considerations to be made. Boeing probably knows more accurately the weight of all components going on the plane now since most of the designs are getting finalized. If there weren't any concerns, then the projected figure would have been too high since it should be a goal to pick to lowest achievable goal. Now McDonnell Douglas on the other hand with the MD
-11 went beyond the lower limit in its projection and ended up with a design that failed to meet specifications. While it is too early for us to be certain of the performance characteristic of the 787, there should be no surprises in engineering if things are done correctly.
If you have never designed an airplane part before, let the real designers do the work!