Ejection Systems

[mormanman]

Well I check to make sure that there were no threads already posted like this (maybe missed some).

 

This is a thread dedicated to the making and design of ejection systems.

 

Well anyway I am in need of an ejection systems and I keep trying to design/make one by wrapping some tape around some quick match but the quick match and the fuse for the second stage of the rocket keep falling out of the pass fire hole. Its rather frustrating.

[Aquarius]

Make a drawing or a better description of your problem, this does not say much and will not get you much help...

Are you looking for a system to eject your used motors, booster stage, parachute or what?

[mormanman]

For a Two Stage rocket. I'll just draw it.

 

http://i9.tinypic.com/4ujrz86.jpg

 

I'm trying to make the second rocket fall off but don't know how.

[hst45]

mormanman, I think I have your answer, if I get your drift correctly. If you are trying to do a two-stage rocket on ONE stick, you have the problem of how to eject the spent first stage motor, right? The solutions seems to be to use two serarate rockets, on two seperate sticks, loaded nose to tail. Build a collar of cardboard tubing that has an I.D. the same diameter as the O.D. of the motors, and glue this short collar to the top of the first stage so that the second stage motor nests into it. Notch this collar so that the stick for the second stage passes by and lays beside the first stage, and put a bit of BP in the joint so that it passes fire to the blackmatch fuze to the second stage. The first stage will push the second stage ahead of it until the top of the grain burns throught, igniting the BP/blackmatch/grain of the second stage, which will expell the first stage with its thrust.

[Aquarius]

Or you strap the top motor (2nd stage) to the stick and use a collar fastened on the booster (1st stage) and slide this over the end of the second stage with a somewhat thight fit.