Fuel Grains
The fuel grains are made from readily available Hurricane Wax, which is nothing more than paraffin with a melting temperature of approximately 160 deg F.
The paraffin is melted and poured into an inexpensive 2.0" diameter cardboard tube with a 0.5" aluminum mandrel in the center which is removed after cooling.
The paraffin has 1% (by weight) graphite powder added to it to act as an opacifier.
Once cool a small ring of traditional AP/HTPB solid propellant is fixed into place at the injector end of the paraffin grain. This "ignition ring" will help to insure the motor will start under the high pressure flowing oxygen conditions.
Paraffin information
Ingnition ring information
Spin casting information
Fuel Grain Pours
| fuel-grain-pour | Initial fuel grain pour |
| fuel-grain-pour | grain pour |
| fuel-grain-pour | grain pour |