n2o, ethane, co2 ethene mixtures

toby peers wrote:
Sometimes people on this group have mentioned mixed liquid monprops
like methane and oxygen and that they are very dangerous. What
about non cryogenic equivalents like;

n2o,co2
n2o, ethane
n2o, ethene
n2o,co2,ethane
n2o,co2,ethene
co2,ethene (like the mars cars proposed by Zubrin)

would any of these combinations mix and would they be equally
dangerous as oxygen methane mixtures? (n2o is supposed to
be fairly unreactive at low temperatures, not sure about ethene
though!) has any work been done on this?

Toby


CO2 is fairly inert unless you're using a high temperature fuel like
aluminum of magnesium. It would act as a dilutant, much like water,
reducing sensitivity and reactant energy.

N2O is not so great as a rocketry oxidizer, though it's usefull for models.

Any fuel oxidizer mix is potentially explosive, though sensitivity varies.

toby peers wrote:
Sometimes people on this group have mentioned mixed liquid monprops
like methane and oxygen and that they are very dangerous. What
about non cryogenic equivalents like;

n2o,co2

That's not a monoprop, it's an monoprop and an inert(ish) gas.
Do you perhaps mean N2O/CO?

n2o, ethane
n2o, ethene
n2o,co2,ethane
n2o,co2,ethene
co2,ethene (like the mars cars proposed by Zubrin)

would any of these combinations mix and would they be equally
dangerous as oxygen methane mixtures? (n2o is supposed to
be fairly unreactive at low temperatures, not sure about ethene
though!) has any work been done on this?


--
http://inquisitor.i.am/ | | Ian Stirling.
---------------------------+-------------------------+--------------------------
"The theory of everything falls out trivially." -- Etherman, sci.physics kook.

toby peers wrote:

Your right, but I did mean co2 as I remember reading an article about
experiments the surrey space centre carried out where they were using a
catalyst to decompose n2o for monoprop and biprop apps. It seemed promising
but the catalyst seemed to get cooked above 1200deg C (If I remember
correctly). I thought diluting the n2o with co2 (same molecular mass similar
vapor pressure, etc) would allow one to have a monoprop (poor performance
admitedly) with a non-exotic catalyst. I wonder if n2o and co2 are miscible?

kook.

I don't recall N2O being a high energy monoprop. If your intention is
to cool an overly hot mix and preserve catalyst, a low molecular weight
diatomic molecule will have less impact on exaust velocity.