ActingLikeAKid
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Building a scratch-built rocket from BlueTube. Total weight is going to come in at just under 1 kg. Length is ~130cm. 38mm mount. I'm planning on (unless maybe I try dual deploy in the future, and I'm building it so that's a possibility) doing a Jolly Logic Chute Release. I was thinking about shock cord setups, and here's what I'm thinking:
The break in the rocket (Is there a term for this?) is about halfway up, so the "nose cone" section is almost as long as the bottom. To avoid things banging together, I'm thinking of having about 6 feet of shock cord, then the chute, then another 2 feet of shock cord to the upper body section. Obviously when it's free falling before the CR pops, it's just going to tumble and do its thing. But once the CR opens, I don't want the two halves of the rocket banging into each other, hence the uneven cords. In my head, as it's descending, this would look like an old grandfather clock with one weight down and one weight up (if that makes sense) ...
Further details: A long loop of 1/4" tubular Kevlar with both ends "capsuled" along the mmt and the top of the loop just below the top of the lower body tube. A 6 foot section of 1/2" tubular nylon is attached to the Kevlar at one end and a quick link with the chute at the other. Also attached to the quick link is a 2 foot section of nylon that goes to the nose cone.
Any comments/thoughts/suggestions on this?
The break in the rocket (Is there a term for this?) is about halfway up, so the "nose cone" section is almost as long as the bottom. To avoid things banging together, I'm thinking of having about 6 feet of shock cord, then the chute, then another 2 feet of shock cord to the upper body section. Obviously when it's free falling before the CR pops, it's just going to tumble and do its thing. But once the CR opens, I don't want the two halves of the rocket banging into each other, hence the uneven cords. In my head, as it's descending, this would look like an old grandfather clock with one weight down and one weight up (if that makes sense) ...
Further details: A long loop of 1/4" tubular Kevlar with both ends "capsuled" along the mmt and the top of the loop just below the top of the lower body tube. A 6 foot section of 1/2" tubular nylon is attached to the Kevlar at one end and a quick link with the chute at the other. Also attached to the quick link is a 2 foot section of nylon that goes to the nose cone.
Any comments/thoughts/suggestions on this?