MD11 wing
The big problem of the MD 11 was, that there was no money left to design a new wing. Thus, especially in the freighter version with much higher TO and LDG weights (286/223to) the cL was to small so much higher speeds had to be used. Minimum clean at MLAW was about 245. V2 MTOW 180. This again required always RWYs with minimum 3000m.
The stabiliser though was redesigned, and smaller than the DC 10's. This again required that Douglas had to develop the famous LSAS (Longitudinal Stabilisation Augmentation System). This gave the MD-11 incredible stability during turbulence. You could stall the airplane, take your hands of controls and it would recover totally without pilot inputs, just by automated thrust and elevator movements. No other commercial airliner ever could do that.
The reason the MD11 failed was the laking of of new wing. Especially in a time when fuel consumption was critical.
The MD11F has a FF of 7200kg/h at MTOW. The A340-600 has the same FF. Only weighting 386to!