Frank Szabo
Veteran
Other than a few aerodynamic tricks hither thither and yon, I'm not too sure what else could be done to a 73X model excepting a different type of engine.Boeing has said that it plans to make incremental improvements to the efficiency of the 737NG's no matter what it decides about a replacement. It appears that the customers predominately want a replacement rather than a new design now, but considering that most of the customers are leasing companies that's no surprise - putting off a large change keeps the value of the NG's up longer.
Aside from sales of the NG's, Boeing has the advantage of the unchallenged 777. Looks like Airbus will be scrapping plans for the A350-1000 since no one is interested - some customers are saying outright that it won't be competitive with the 777 when passenger and cargo loads are factored in.
Jim
Looking at the CFM-56 version flown by American I see many tricks that, even in Navy Jet School, we were told what it would take to gain efficiency from a jet engine. It seems GE & their buddies in France used every one of those little tricks as better materials became available & added the computer to the engine's fuel system.
My question: What exactly would an improvement(s) of that little motor be? Where could one look to squeeze a couple extra "miles per gallon" out of it? The CFM is a fantastic little engine but even with a chip change on the 'puter there are some things that are at their limit, I believe..
What's out there in the way of engines, operating or prototype, that would be more efficient?