I launched my LOC IV on a Cesaroni I540 today. Over all it was a good launch. It didn't quite make the 5,010' altitude that Rocksim said it would recovery was 1,500 downwind and easy. At ignition the motor started to come to life, popped, and was off.
Here's the sequence:
Times are from the camera. I can get 10-ish frames per second out of my 1Dx (probably faster than that but I didn't feel like looking it up). Frame 1 (left) has what seems like good ignition. Frame 2, 9ms later it looks like it almost went out. Frame 3, 10ms later and it has come back. Frame 4, 18ms after that, the rocket was on its way. The motor case was melted away from the nozzle to about the middle of the case (5 grain case).
It's a commercial motor so this is more about curiosity about what happened than anything. Performance was fine.
Here's the sequence:
Times are from the camera. I can get 10-ish frames per second out of my 1Dx (probably faster than that but I didn't feel like looking it up). Frame 1 (left) has what seems like good ignition. Frame 2, 9ms later it looks like it almost went out. Frame 3, 10ms later and it has come back. Frame 4, 18ms after that, the rocket was on its way. The motor case was melted away from the nozzle to about the middle of the case (5 grain case).
It's a commercial motor so this is more about curiosity about what happened than anything. Performance was fine.