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I am surprised you guys pushed through with the DoubleSShot motor after the mixed success of the MiniSShot program. I think you only had one successful static test with that and not a single successful flight. It is no surprise this motor CATO'd. I hope you guys can take a step back before investing more materials and time in a design that seems less than perfect.
trueq2fan 1 week ago
@trueq2fan Our failed tests with the ProtoSShot motors was due to aft motor burnt casting tube material being flushed into the nozzle throat thus effectively plugging the nozzle. We changed to the ablative casting tubes and had several successful tests with them including the full ProtoSShot-III static test. The problem with the first MiniSShot flight was fixed and the MiniSShot-II flight had successful burns in both motors till the payload/recovery section failed at 1800 ft/sec.
mojaverockets 1 week ago
Comment removed
trueq2fan 1 week ago
Looks like the aft section decided to depart at a bad time!
My money is on delay/bulkhead failure.
Oh well, wont learn without making some mistakes. Better luck next time.
iwasapenny 5 months ago
@iwasapenny That's what we think may have been the problem though there are also a few others we are looking into. The next test will just test the aft 6 grains and the redesigned delay grain/mid-bulkhead with pressure sensors for both. We are hoping for this test next month.
mojaverockets 1 week ago
Rick, never done before...but soon!
abrumas 5 months ago