Conan4480
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- Mar 29, 2009
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I have a question about the physical effects of additional motor burn time on a rocket. This is kindof something I was thinking because that is just how my mind works.
This is a hypothetical question. I do not have a specific manufacturer in mind for the question.
The comparison is between a J415W and a K185W on a rocket that is 3" in diameter, designed by the manufacturer to fly on J impulse motors. The materials for the rocket are the standard cardboard and ply, built per the directions provided by the manufacturer. Both motors put out roughly 100lbs of thrust. The burn time for the J415 is two seconds and the burn time for the K185 is eight seconds.
What would the effects of the additional burn time of the K185 have on the components of the rocket? Could I expect the additional burn time of the motor cause extra fin flutter and potentially shred the fins? Would there be adverse effects on the body tube?
Ok, so this was more like three questions. Sorry about that.
Thanks
Conan
This is a hypothetical question. I do not have a specific manufacturer in mind for the question.
The comparison is between a J415W and a K185W on a rocket that is 3" in diameter, designed by the manufacturer to fly on J impulse motors. The materials for the rocket are the standard cardboard and ply, built per the directions provided by the manufacturer. Both motors put out roughly 100lbs of thrust. The burn time for the J415 is two seconds and the burn time for the K185 is eight seconds.
What would the effects of the additional burn time of the K185 have on the components of the rocket? Could I expect the additional burn time of the motor cause extra fin flutter and potentially shred the fins? Would there be adverse effects on the body tube?
Ok, so this was more like three questions. Sorry about that.
Thanks
Conan