Overview
Xaphan Blue was the team's first custom propellant. It is a "blue" formula, using copper catalysts.
Formula
If you are an appropriately certified individual you may access the formula for Xaphan Blue through the Rocketry Forum.
Xaphan Blue Formula - EX Forum (L2 Required)
Testing
This formula has been tested many times. It was characterized first on a strand burner, then in 54mm tests, then in single grain 98mm tests, and most recently 4 grain 98mm tests.
The most recent test revealed a manufacturing error in the length of the phenolic liner. This resulted at a burnthrough near the forward closure.