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Registered Member #56
Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
N2O is used for several reasons, most notably that it has a perfect vapor pressure for what we are doing. At 25c the vapor pressure is about 700psi, so you can easily store it at room temp, but you do not require any powered means to get it into the combustion chamber (pumps, etc). Also, it is quite inert at room temp, but when heated violently (I forget the exact temp it dissociates at) it turns into O2 and N2. Pound for pound O2 is more efficient, but when you consider the support equipment to be able to use LOx the N2O wins out for just about any civilian rocket.
Registered Member #530
Joined: Sat Feb 17 2007, 07:56AM
Location: Victoria BC, Canada
Posts: 178
Gaseous O2 in a bottle over top the road tar motor gave about 300 lbs worth of thrust when ignited ---- it didn't require anything special.... yet again I wasn't the person who had the equipment. It looked very similar to the N20 set up.
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My first rocket!
