P1: Nitrous at Balls in '09
PBAN Fuel Grains
Last Update, 5/30/08 by Stephen Daniel
This page documents the PBAN fuel grains we use.
Information on our original PVC fuel grains is here.
The PBAN fuel grains are built in two steps. First we create the liner. We start with the desired length of PML phenolic tube. We cut a slit length wise on one side and then glue the liner back together. This reduces the diameter from x.xx" to x.xx" so it will fit in our motor.
The second step is to cast PBAN into the liner using a wax coated wooden rod as mandrel to form the core. The PBAN is mixed with 1% carbon-black by weight to improve regression during burn.
Advantages of this design: