I've completed a couple of the wooden pyrogen canisters. I also ran a new SRM simulation with KNER propellant. The result of switching from KNSB to KNER is that the burn time basically doubles and the chamber pressure is cut to about half. The drop in chamber pressure results in a bit of a drop in Isp, but for my first KNER test I'm fine with that. A sugar motor this size with a four second burn time should be pretty cool and at this point the purpose of this test is to get some experience with KNER and test the pyrogen design.
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