I may have just stumbled on a source of a
catalyst that may work. I was going to wait until I had more info but with
the conversation as it is, I thought I would
present it now. I have written them and presently awaiting an answer,
but here is what they say on the web page.
"It is solid and does not dissolve in the
solution, therefore it can be reused many times with new portions of
hydrogen peroxide, while the reaction product is
simply clean water. Other advantages of our heterogeneous
catalyst are very high efficiency (much higher
than manganese dioxide or silver) and low cost. The presence
of stabilizers in hydrogen peroxide does not
impair the decomposition and any type and grade of H2O2 can be used"
Sound to good to be true! Will update when I hear back.
Robert
At 09:43 AM 12/15/2015, you wrote:
For a flight weight vehicle, its hard to build light weight LOX tanks, and the valves for LOX are a continuous problem withÂ
small valves. Â Â
Also if you factor in the price of Helium I think that peroxide pressurized with Air or N2 is lower cost than LOX.
The Lox is almost free, the Helium not so much....
Also no hardstart issues, it just lights....Â
the O:F is ~ 7:1 and the O is the coolant for Regen, small Lox hydrocarbon regen motors are hard and need film cooling,
with Persoxide I'm runing a 100lb regen aluminum motor with no cooling issues (so far)
You do have cat pack issues...
You can get you oxidizer and store it for log periods... not so with Lox.
I like peroxide....
Paul
On Tue, Dec 15, 2015 at 8:31 AM, Monroe L. King Jr. <<mailto:monroe@xxxxxxxxxxxxxxxxxx>monroe@xxxxxxxxxxxxxxxxxx> wrote:
 Where there some details somewhere? Yeah, I think Paul had a better
source for peroxide than Armadillo seems like a lot of Armadillos work
was done with lower concentrations at least on the bigger motors.
 Peroxide/gasoline or kero would seem to benefit from jet engine
technology. Basically treat it like a jet ingesting a lot of water. I
wonder if an annular combustion chamber can be made to withstand the
heat?
 That would be reinventing the wheel right now which I'm wanting to
avoid.
> -------- Original Message --------
> Subject: [AR] Re: Peroxide/Gasoline Engine
> From: David Weinshenker <<mailto:daze39@xxxxxxxxxxxxx>daze39@xxxxxxxxxxxxx>
> Date: Mon, December 14, 2015 10:00 pm
> To: <mailto:arocket@xxxxxxxxxxxxx>arocket@xxxxxxxxxxxxx
>
>
> On 12/14/2015 08:07 AM, Monroe L. King Jr. wrote:
> >Â Â I was looking over the work done by amateurs on peroxide/kero rocket
> > motors.
> >
> >Â Â What I see so far is a lot of unstable motors with asymmetrical issues.
>
> Check out Paul Breed's peroxide/gasoline engine that flew on one of his
> "lander challenge" vehicles: that seemed to be a smooth-running unit
> (though well under the 1000 lbf. you contemplate here).
>
> -dave w