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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.
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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 closureThese motors are tested on "Henrietta" our yellow 54mm and 98mm test stand.
| Test # | Date | Site | Result |
|---|---|---|---|
| XB-98-4G #1 | Crow Island | Undetected stress concentrator in nozzle lead to a cracked nozzle. | |
| XB-98-4G #2 | Crow Island | Poor sealing on thermal liner lead to runaway burn-through | |
| XB-98-4G #3 | 9-23-2017 | Crow Island | Full Duration |