Revelation wrote:PW100 wrote:At some point the cost savings of simplifying the FAL to just the 777X will outweigh a reduced selling price of 777X freighter. But maturity on the production system will be required to reach that point.
I think people are missing the importance of:Spetsnaz55 wrote:The plan is actually to use one FAL for both of them. That's why all 777x moves are on AGVs now to allow for maneuvering with the 777 FAL
There eventually will be one FAL.
The AGVs ( automated guided vehicles ) are the same monument-free system being put to use in Airbus A320 FAL #4 in XFW.
The fact that the wings have different shapes doesn't matter at FAL time because the AGVs know exactly where to position the wings relative to the fuselage.
Some info:The new process will use automated guided vehicles (AGVs) to move the components of FAUB into position, including work stands, fuselages and the robotic arms that will drill and insert fasteners.
And:Once the 777X enters production, its composite wing will travel through the same main final assembly line as the metal wing now used on the current generation airplanes, thanks largely to the flexibility the new monument-free system affords. Boeing expects to continue building metal wings for the 777 freighter for roughly another 10 years, said Lund, or until the company decides to develop a 777X cargo variant with a composite wing.
So it's all been worked out, the 777x production system is constructed knowing the 77F will be in production for another decade or so.
Boeing has done the sums and has decided building 77F and 77X on the same line makes the most sense going forward for quite a while.
Eventually they presumably will hit a tipping point where customers simply prefer 777X's bigger size, better aero performance and newer engines and are willing to buy enough 777XF to pay for the cost of introducing it, but till that happens, they will keep selling 77F.
Ref: https://www.ainonline.com/aviation-news ... transition
Facinating how they are economically adding the variety in production. At one point there will be better economics with one wing (sorry Mitsubishi), but as quoted, years away. I personally think the 778F will be closer to 7 years away, but when predicting so far in the future, unknowns such as taxes and oil prices play an outsize role.