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View Diary: How Airliners Work - Propulsion (191 comments)

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  •  I'm not into perpetual motion, but how about (1+ / 0-)
    Recommended by:
    twigg

    an unpowered fan, a turbocharger if you will, to drive a generator to help with a top off charge to extend range, and potentially reduce battery weight?

    Republicans are like alligators. All mouth and no ears.

    by Ohiodem1 on Tue Apr 02, 2013 at 08:16:15 AM PDT

    [ Parent ]

    •  Well that is pretty much (2+ / 0-)
      Recommended by:
      Ohiodem1, polecat

      the theory behind some cars.

      I can't help but think that aircraft engineers have already thought of it.

      I imagine that a generator large enough to make a significant difference would be large, heavy and require quite a bit of fuel. They can't, for example, recover energy under braking like a car can, and overcoming the rolling resistance from a heavy car is completely different to "lift".

      So I imagine the "perpetual motion" thing applies, as does gravity and stuff :)

      I hope that the quality of debate will improve,
      but I fear we will remain Democrats.

      Who is twigg?

      by twigg on Tue Apr 02, 2013 at 08:21:45 AM PDT

      [ Parent ]

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