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

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  •  Turbines are remarkably efficient (1+ / 0-)
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    (even better for power generation because they can run at their most optimal speed) and that has a lot to do with the high operating temperatures.  In fact with actual burning methods, the Carnot cycle's efficiency is defined by the temperature difference between the coldest and hottest point in the system.  At one time it was thought that Ceramic engines would take over because they can get so much hotter than Iron.  Cost and tensile strength are bad, though.

    Turbines have problems -- typically the wear and tear (and cost!!!) of the blades.

    Fuel Cells have problems -- clogging of the ion exchange filter, wear and tear, exhaust gasses, etc.

    Happy little moron, Lucky little man.
    I wish I was a moron, MY GOD, Perhaps I am!
    —Spike Milligan

    by polecat on Tue Apr 02, 2013 at 11:16:31 AM PDT

    [ Parent ]

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