ArchGuy1 wrote:Why do trijet aircraft like the DC-10 and L-1011 consume more fuel than four engine aircraft of the same age like the Boeing 747.
thatguy wrote:I believe that the OP is referring to a statement made by an airline executive in the early 90s, I forget who it was, that the A340 quadjet was more economical and cost effective than the MD-11 trijet.
It has nothing to do with quads vs tris as a whole but rather the A340 specifically being superior to the MD-11, if you have 2 identical aircraft and place 4 engines on one and 3 on another (which was actually the original widebody plan in the 90s for Airbus before they scrapped the trijet) the trijet will consume much less fuel.
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