h a l f b a k e r yWarm and Fussy
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Since Ammonium Perchlorate has an oxygen content that is much higher than air (50% as opposed to 30%)why not use it as an oxygenator for internal combustion engines.
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Why not just use pure O2? Expensive, but sounds cheaper than ammonium perchlorate. |
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//50% as opposed to 30%// Air has around 21% oxygen - where did you get the other 9%? What [adze] said. Anyway, what has this got to do with rockets, which are not, technically speaking, internal combustion engines? |
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//why not use it as an oxygenator for internal combustion engines.// |
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- It has to be manufactured / transported / stored at a cost. Air is ‘free’.
- It has to be carried onboard.
- It is a significant environmental problem already, just from current uses.
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I think you will find a long list of reasons ‘why not’. Car bombers would love it, though. |
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Are normal engines limited by the
amount of oxygen they can take in? (I
know turbochargers drive air in, but I
thought this was to increase the
compression ratio rather than to
enhance the combustion?
WHich triggers a thought:
presumably, if you injected nothing but
a small amount of petrol and small
pellet (or other form) of solid oxidant,
but no air, the compression ratio would
be huge: you'd have almost zero
volume to begin with, and the normal
post-combustion amount of gas
afterwards, no? |
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As long as you’re throwing solids in there, add some coal and do away with the gasoline. |
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Hmmm. There were engines modified
to run on coal dust, I think, and
possibly on gunpowder. |
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Yes, Rudolf Diesel, of all people. One little explosion, and he gave up. |
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Some people are such wimps. |
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The engine would probably overheat. |
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//I know turbochargers drive air in, but I thought this was to increase the compression ratio rather than to enhance the combustion? //
The extra pressure is used to drive in more air (and hence more oxygen) to allow more fuel to be burned and so increase the amount of power produced.
The compression ratio is always fixed by the geometry of the cylinder. |
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Pretty much whatever reasons you come up with for using Ammonium perchlorate in an engine, NOS will do a better job. |
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I imagine you'd need all 316SS-or-higher, perhaps even some exotic nickel based superalloy engine components to survive the corrosive fuel, too. |
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well, dunno about ammonium whatsis, but what about using plain old O2 ? if you happen to have a source, that is. I suppose you could fractionally distill the n2 and co2 out of air and be left with mostly o2. You'd need a different engine design I'm guessing, and a "failover" mode for running on air, but you wouldn't be left pumping (endothermic?) nitrogen compounds into the air. |
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An investment in play in this direction (oxygenator for combustion) could allow the ubiquitous internal combustion engine beneath the ocean waves[the under investigated horizon] . |
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[wjt] - was that straight out of a babelfish "chinese whispers" exercise? What was the original comment? |
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