Comments
K2050ST motor CATO at 0.32 seconds. Nozzle ID was confirmed to be 0.705" (correct) and O-rings were verified to be seated correctly. Flight accelerometer data shows nominal burn until a spike at 0.32 sec when the rear portion of the case fragmented, rear closure and retention were lost, and upper grains extinguished. Charlie Savoie has 54/1706 motor remains. We inspected the forward closure, seal disk, O-rings, liner, and extinguised grains. We also looked at the aft casing fracture along the closure treads.