Charlie:
Take a look at: https://www.rrs.org/a-hydrogen-peroxide-rocket/
Then accept that that project took six years and north of $7000 for that
single flight to less than 300 feet.
After reflecting some upon what you have already here been told here, you
might want to further accept that you are not likely to ever find a
reliable source for 90% H2O2 and that whatever source you find--if
any--will be extremely expensive. Then I would suggest you recognize that
Liquid Oxygen is cheaper than dirt...and requires less cleaning
(passivating an aluminum tank with a mix of 50% Nitric Acid and 2-3%
Hydrofluoric Acid is not required for LOX, just sayin').
If you are unwilling to face your evident fear of cryogens, then commercial
Nitric Acid and Turpentine are by far the next easiest high performing
choice for an amateur; using a slug of Furfuryl Alcohol for hypergolic
ignition makes your liquid rocket even simpler.
Or you could--for far less money--just buy a commercial 6" diameter motor
from one of the High Power Rocket motor producers and build a rocket around
it.
Bill
On Tue, Mar 9, 2021 at 3:14 PM Charlie Jackson <charliejackson8629@xxxxxxxxx>
wrote:
Hello,
I am looking into some various methods to decompose hydrogen peroxide for
my engine, however It is proving difficult to find a way to integrate
catalysts like manganese dioxide into the design due to the fact that they
are a powder. Do you have any advice how I would go about this? Currently I
am considering placing it in between two screens to hold it in position,
would this work? Or would it fall through? Are there any other catalysts
out there that may be easier to work with?
Also, as a small other question, I asked about peroxide before and it was
kindly mentioned that I would require higher concentrations of roughly
80/90% to vaporise the water produced, what would happen if water gets into
the combustion chamber?, and what are your opinions on concentrating my own
peroxide if I cannot find a supplier?
I am still learning about engineering of such devices so I appreciate all
the help so far :)