Hybrid rocket motor - test 10

Successful static test of my hybrid rocket motor. It burns polyethylene with hydrogen peroxide. The regular pattern in the exhaust, called the "mach diamonds", is a sign of good behaviour of the motor.

Category:

Howto & Style

Tags:

• rocket
• motor
• amateur
• test
• peroxide
• hybrid

[roboticmehdi]

I have 50% hydrogen peroxide and I can't find more than that. Can you tell me how to purify it up to 75%-80% ?

[damienteney]

If you can't figure out how to do it, it's probably too dangerous for you to do it, sorry. Maybe you should look at N2O hybrids instead ?

[roboticmehdi]

how do you feed H2O2? using liquid CO2?

[damienteney]

Here I use gaseous CO2 to pressurize the H2O2 tank and feed the motor.

[roboticmehdi]

I have been on your webpage. Nice work really. Does the catalyst stays untill the burnout, or it is just to start the decomposition for a few seconds?

[damienteney]

Yes it might work, the heat of the igniter would then start the decomposition process. However this would be trickier to design, a catalyst is just a lot less pain to design and is way more reliable. Here, I'm pretty sure most of the catalyst is washed out before the end of the burn.

[roboticmehdi]

I tried to boil it so some amount of water will boil off, because pure h2o2 has higher boiling point. but the boiling point did not change, it was constant. plz, if you explain I am sure I will understand, and if it is dangerous for me ill continue with %50 h2o2.

[roboticmehdi]

Can this motor work without a catalyst, but using an igniter ?

[damienteney]

Thanks. The catalyst is mixed with polyurethane and applied on a steel support; it is quickly burned and/or washed out by the peroxide flow.

[maggot125]

sweet