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15 December, 01:24

What are the requirements of a practical fuel

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  1. 15 December, 01:48
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    To be a practical fuel, a substance

    - - is cheap and plentiful

    - - has a lot of energy in a small volume

    But ...

    - - it's stable ... It's easy to get the energy out of it when you want some, but a lump of it doesn't just decide to pour out all its energy unexpectedly.

    (TNT is not a practical fuel.)
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