Some Experiments on Model Composite Solid Propellants

Experiments on two‐dimensional model propellants using cylindrical oxidizer (ammonium perchlorate) pellets in a fuel matrix (CTPB) are described. Measurements show that burning rate of AP in the fuel environment is lower than of pure AP. The oxidizer‐to‐fuel ratio seems to be fuel‐rich when the oxidizer particles are imbedded in contact with the fuel and it becomes oxidizer‐rich for a non‐zero separation between oxidizer particle and the fuel.