Re: Water Fuel Rocket Science

In article <1141785178.510082.125070@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> you wrote:
Water contains hydrogen and oxygen. Liquid Hydrogen/Liquid Oxygen
rocket engines burn these chemicals to produce water as a byproduct of
combustion. Water is an extremely compact form of the two chemicals,
saving a great deal of space over hydrogen by itself.

Water is also a stable form for water/oxygen, only igniting after
having been separated and reunited.
<snip>
They can be separated with intense heat as proven by turbochargers on
cars and engines of all sorts. I suspect, however, that only a tiny
portion of the water mist is actually separated and reunited. This is
because the total fusion of even a small amount of mist would instantly
destroy most engines. Each molecule of water releases enormous energy
on molecular fusion.


Okay...
How an internal combustion engine works.

There is no water mist injected.

It sucks air into the cylinder, which is mixed with fuel on the way in.
Then the intake valve closes, and this mixture is compressed maybe 15
times as the piston rises, then ignited.

As the heated mixture expands, driving the piston down, and through the
crankshaft the output shaft round, it cools, and comes out through the
exhaust.
The exhaust gasses are pretty much the same as what happens when you
burn petrol/diesel/... in an open flame. (more NoX because of the high
temperature)
Because the exhaust gasses are much hotter (several hundred C), and
because when you burn hydrocarbons, you get H2O molecules as the
hydrogen from the hydrocarbon, and oxygen combine, and CO2 when the
carbon and oxygen combine, which together have a greater volume than the
incoming oxygen, the volume of output gas is higher.

A turbocharged engine adds a device called a turbocharger.
This takes the exhaust gasses, and uses them to spin a turbine.
The other half of this turbine compresses the air input into the engine.

Doubling the pressure into a cylinder means that you can burn double the
amount of fuel, as you've got twice the amount of air.
This (about) doubles the power, minus the power used to run the
turbocharger.

The water/steam is formed during combustion of the hydrocarbon.
It's formed at all times you burn it with oxygen.
Just hold a cold metal plate over a lit candle, and you can see the
condensation.
.

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