- Joined
- Nov 21, 2015
- Messages
- 50
- Reaction score
- 2
Yesterday I flew a rocket using an AT G53-7FJ reload and the ejection charge fired much too early. The propellant ignited and burned normally, but the ejection charge fired only about 2 seconds after the propellant burned out. At that point the rocket was about 400-500 ft up and moving at high speed. Fortunately there was only minimal damage to the rocket which I have already repaired.
I don't understand the reason for this failure. I am sure I assembled the motor correctly as I have done dozens of times before with reloads using 29/40-120 cases. I used the 7-sec delay element as supplied with the motor and I did not drill it. The burned-out motor and casing appear normal to me without damage or deformities, and the delay element and propellant were fully burned. I have I entered this info in the NAR database of motor failures.
I would be happy to know if anyone has any insights as to why there was a 2 sec delay instead of 7.
I don't understand the reason for this failure. I am sure I assembled the motor correctly as I have done dozens of times before with reloads using 29/40-120 cases. I used the 7-sec delay element as supplied with the motor and I did not drill it. The burned-out motor and casing appear normal to me without damage or deformities, and the delay element and propellant were fully burned. I have I entered this info in the NAR database of motor failures.
I would be happy to know if anyone has any insights as to why there was a 2 sec delay instead of 7.