I am currently in the process of designing and building a hybrid rocket test stand for my soon to be hybrid rocket engine to run simple tests like thrust, temp, mass flow rate, exhaust velocity and just overall performance. I will be using paraffin wax as my fuel (its safe to use) and either N2O or O2 as my oxidizer (which ever one is cheaper). If someone could refer me to a good Australian supplier of gases that are reliable that would be great and pressure regulators. I am thinking of just using an aluminium hull/shell as it is light and cheap and fairly sturdy and having a single stage and using a pilot light to ignite the paraffin. Also this is my first time building my own rocket rather than a kit so any general tips would be super helpful.
Discussions of motors from single-use and RMS solid propellants to hybrid propellants
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Sorry also could someone please help me in figuring out how to calculate the oxidizer to fuel ratio. I am not asking that you do it for me but provide me with an equation i can use to figure it out as a i cannot find anywhere on how to do it.
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