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An interesting question, which higlights the difference between "eco-mentalism" (and the fate of the polar bears) and "eco-nomics" (and the fate of energy demand vs energy supply). the ultimate conclusion for either belief system is inevitably a more prudent use of energy, so sailng ships, air ships, open rotor turbines / blended wing body configutations... these would all seem to have a place. I whole hearlted agree with the argument about low CO2 emissions of aviation.... but if the worlds airforces are looking at increases in efficiency and reducing dependancy on fosil fuels, than you can bet this is not down to polar bears. These decisions will have been made on the best available data and so I think it's fair to assume there are some serious concerns about energy supply security and affordability. If the philosophy of "Just in time delivery" is to survive. we may have to re-define the boundaries of "in time". It is quite possible that the future will be slower in many ways.
An interesting question, which higlights the difference between "eco-mentalism" (and the fate of the polar bears) and "eco-nomics" (and the fate of energy demand vs energy supply). the ultimate conclusion for either belief system is inevitably a more prudent use of energy, so sailng ships, air ships, open rotor turbines / blended wing body configutations... these would all seem to have a place.
I whole hearlted agree with the argument about low CO2 emissions of aviation.... but if the worlds airforces are looking at increases in efficiency and reducing dependancy on fosil fuels, than you can bet this is not down to polar bears. These decisions will have been made on the best available data and so I think it's fair to assume there are some serious concerns about energy supply security and affordability.
If the philosophy of "Just in time delivery" is to survive. we may have to re-define the boundaries of "in time". It is quite possible that the future will be slower in many ways.
