3 ms·
you have to remember that a lot of gain come from economy of scale, making bigger planes, the gains are realized only if passenger traffic increase (hence total
by nraynaud 10y ago
you have to remember that a lot of gain come from economy of scale, making bigger planes, the gains are realized only if passenger traffic increase (hence total pollution).
- redcalx 10y agoSee https://en.wikipedia.org/wiki/Jevons_paradox https://en.wikipedia.org/wiki/Jevons_paradox
- mahyarm 10y agoYou can reduce flight count and have the same amount of passengers to have a net gain in efficiency and a reduction in pollution.
- WalterBright 10y agoThe 757 was about the same size as the 727, but 35% less fuel burn. The gains I cited were for the same size aircraft. (I worked on the 757 engineering.) The gains are real, and the airliners fell all over themselves to replace the old, inefficient jets with the new ones, because the operational cost savings were immense. Ever notice the little vertical "winglets" on the wing tips? They increase the wing efficiency. They worked so well that Boeing produced kits so older aircraft could get them, too. They're just one example. The plastic skin used on the 787 is for weight saving, another example of reduced fuel burn.