>Consider: A 737 with 2 engines produces max 50K thrust. But it
>can lift and hold some 130K pounds. So in this case, you get
>80K pounds for "free."
Atsa nothing. Consider a glider. No thrust, yet it doesn't plummet from the sky. Now THAT's efficient. I'm surprised that Ryanair aren't using JUST gliders. Think of if, no fuel costs. And if we ignore the cost of airframes and crew : we could have free flights.
Alternatively, I could check whether today is "National Troll Day"...