Malfunctioning Engine Statistical Survey
M.E.S.S.

Search Result

Manufacturer
AeroTech
Designation
K2050ST
Type
reload
Date code
new AT 54/1706 casin
Failure date
May 20, 2017
Location
Fresno CA
Temperature
80 ℉
Nozzle blown out
Casing split
Burning propellant ejected
Reported to mfr.
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.
Status
accepted