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Ok, I'm going to try one more time to see if I can make a 7" diameter rocket that still meets far 101 weight....I'm on track so far. Decided on a Jupiter C.
I've got it framed up and am working on the stringers now. I decided to use a 29mm stuffer tube with a 3" pml upper section for the parachute. I'll build up the outer diameter to simulate the second stage can, and that same 3" tube goes down into the transition as well and I'll build up and sheet that. The diameter at the second stage can where the transition hits it is oversized since it is the 3" tube but this is standoff scale.
Like my hellfire I'm trying to use depron structure and sheeting for fins etc to keep the weight down.
It will be 7" diameter and 82.5" long so 1/10th scale. The satelite is also slightly oversized using bt-20 and a bt-20 cone since that's what I had, it should really be .6" diameter. Only the satelite and a small coupler section that goes into the second stage can will eject. Altimiter will be installed, not sure if I can make far 101 with the altimiter onboard or not.
Target weight rtf less motor is 48 oz or so.
I'm not probably going to fly it much on G motors with only 4-500 feet expected altitude, but I'd like to see if I can make it. I wanted to make it strong enough for robust 29mm H motors as well, and not be stuck flying on small motors. Funny thing is single use G80 and G75's are more expensive than H-128 reloads by about 4-5 dollars.....
Frank
I've got it framed up and am working on the stringers now. I decided to use a 29mm stuffer tube with a 3" pml upper section for the parachute. I'll build up the outer diameter to simulate the second stage can, and that same 3" tube goes down into the transition as well and I'll build up and sheet that. The diameter at the second stage can where the transition hits it is oversized since it is the 3" tube but this is standoff scale.
Like my hellfire I'm trying to use depron structure and sheeting for fins etc to keep the weight down.
It will be 7" diameter and 82.5" long so 1/10th scale. The satelite is also slightly oversized using bt-20 and a bt-20 cone since that's what I had, it should really be .6" diameter. Only the satelite and a small coupler section that goes into the second stage can will eject. Altimiter will be installed, not sure if I can make far 101 with the altimiter onboard or not.
Target weight rtf less motor is 48 oz or so.
I'm not probably going to fly it much on G motors with only 4-500 feet expected altitude, but I'd like to see if I can make it. I wanted to make it strong enough for robust 29mm H motors as well, and not be stuck flying on small motors. Funny thing is single use G80 and G75's are more expensive than H-128 reloads by about 4-5 dollars.....
Frank
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