Hi, Yeah the british carried on the peroxide work done by the germans.
C-Stoff and T-Stoff=Ze explosion.
We get our h2o2 at 90% through vacuum distillation, we can produce around
5 kg per hour from the commercially sold 60% composition. Our early experience
was with alumina supported permanganate balls, we ran it in monoprop mode for a
100 N engine but the catalyst bed wore off after not too long and it was a bit
of a mess. We then developed our own hypergolic mixture and tested it on a 500N
rocket. Publishing is not really our thing, for the time being the idea is to
keep things to ourselves till the larger motor works.
Below is a video of a static test. A very simple setup as there wasnt much
point in spending a lot of time or money on it.http://sendvid.com/lou2eu92. I ;
think I have come across your blog a couple of times, are you too working with
peroxide?
Cheers,
IB Date: Fri, 12 Aug 2016 08:57:02 +0000
From: dmarc-noreply@xxxxxxxxxxxxx
To: arocket@xxxxxxxxxxxxx
Subject: [AR] Re: "Direct" Hydrogen Peroxide engines
Hello
Being British I am of course deeply interested in anything to do with H2O2.
Most of the UK motors that used H2O2 had a catalyst bed, for example the De
Havilland Spectre, Bristol Siddeley Gamma, De Havilland Sprite, all used
catalysts. the Gamma and Spectre used silver plated gauze. The Sprite started
out with metallic calcium before going over to silver plated gauze.
There was one British engine that used H2O2 without a catalyst and also used
the H2O2 as a regen coolant. This was the Armstrong (later Bristol) Siddeley
Beta. This was an early 800lbf British engine originally developed at RPE
Westcott.
The Peroxide in the Beta was hypergolic with the fuel only because the fuel was
a mixture of methanol and hydrazine hydrate, with, I believe, a little bit of
catalyst whose name escapes me. This was what the Germans called "C Stoff".
The Beta was the first British engine with a turbopump. A Stumpf turbine wheel
drove two Barske pumps for fuel and peroxide. The turbine gas was produced by
decomposing some of the peroxide over a silver gauze catalyst.
I'm really interested in your experiments with H2O2, especially with
permanganate. How did you get on with this and what concentration were you
using? Have you any published results?
Cheers,
Carl. (British Reaction Research).
