The landing gear limits the landing weight. The greatest force is when landing.
Gear has to be able to withstand rejected takeoff and an immediate return to land after takeoff at MTOW.
The wingbox and wing limits the MTOW. The wings lifts up and the fuselage down.
Nope, fuselage strength does as well. That is how loads are transferred to/from the tail and nose gear.
The 787-9 does not then require a stronger landing gear for a small MTOW increase. The 787-10 already has a max landing weight 11T heavier than the 787-9.
Based upon what ? I think you might want to find out what happens on other aircraft.
Pavement loading of the 787-9 is also well below the 77W
They are near identical look at the chart above
A 787-9 with a 260T MTOW and zero increase in empty weight would see a big increase in sales.
Why didn’t they do it for the outset for EIS ?
Why haven’t they done it already ?
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