Swissyhawk
Well-Known Member
- Joined
- Sep 11, 2013
- Messages
- 261
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I had a failure this weekend using an Aerotech G53-7FJ in an Aerotech ARCAS. There was some burning, maybe weak thrust, definitely not a normal thrust. I don't remember if there was an explosion sound; it happened so quickly. After a few more seconds, there was an ejection charge pop and the chute deployed like it should. The rocket never left the pad.
The motor liner was split and one grain was still inside of it unburned. The aft closure was completely missing. The forward closure was still attached to the case. I had an Estes Motor retainer on the rocket. The part that is glued to the MMT was still attached but a little bit angled. The screw on part was still screwed on, but the lip that holds the motor in had been blown off. The MMT appears intact. The baffling blew off the end of the MMT. There were two charge containers stuck in the baffling. Obviously one was from a previous flight. I'll have to watch that. Lastly, the forward centering ring completely burst apart and the body tube was buckled where the center ring was attached.
Can anyone tell me what might have gone wrong? I'm worried that I assembled something incorrectly and I don't want to repeat that mistake.
Thanks.
The motor liner was split and one grain was still inside of it unburned. The aft closure was completely missing. The forward closure was still attached to the case. I had an Estes Motor retainer on the rocket. The part that is glued to the MMT was still attached but a little bit angled. The screw on part was still screwed on, but the lip that holds the motor in had been blown off. The MMT appears intact. The baffling blew off the end of the MMT. There were two charge containers stuck in the baffling. Obviously one was from a previous flight. I'll have to watch that. Lastly, the forward centering ring completely burst apart and the body tube was buckled where the center ring was attached.
Can anyone tell me what might have gone wrong? I'm worried that I assembled something incorrectly and I don't want to repeat that mistake.
Thanks.