Second static test firing of DoubleSShot rocket motor failed big (again). CATO of the rocket motor.
https://www.youtube.com/watch?v=NuxTAv71XacWe think it was a crack in
We think it was a crack in the propellant grain. Increased burning surface led to over pressuring. Chamber pressure were monitored as well as thurst. The GoPro (which I donated) did not servive.