So I'm working my first scratch HP rocket and am looking for feedback. Goal here is to make something light and zoomy, yet sturdy and reliable. 29mm motors for cost. I should be able to just take it out and launch it, get good altitude, and be able to turn around and do it again all day if I wanted. I don't have any specific altitude goals, just as high as practical without sacrificing reliability and reusability.
So, current plan is a 38mm CF tube (which I have found a source for), slimline retainer, thin FG nosecone (picked that particular profile because it's the only one I can find for sale and in stock [madcow], if you know of another please post a link). Dual deploy with an Eggtimer TRS (antenna probably poking out either up or down, and yes I know the CF will block the signal before it's deployed). I think it's light enough that drogue can just be a streamer for visibility? Size of kevlar shock cord recommended? Will shear pins be needed for something this small? How about the coupler for the avionics bay--just cardboard, quantum tube, fiberglass? Any reason to do anything besides cardboard for the motor mount tube? How about just some rings and omit the mm tube?
Went with 38mm body tube because I think I want the strength of thru-wall fins. Opinion on that? Haven't decided what to make the fins out of, thoughts? Fins are that shape to hopefully protect from landings a little more, plus it looks cool. I can get a little more stability if I sweep them back though.
I have a 3d printer and would make the av-bay mount myself with polypropylene filament. Can 3d print other parts if it would help?
So, current plan is a 38mm CF tube (which I have found a source for), slimline retainer, thin FG nosecone (picked that particular profile because it's the only one I can find for sale and in stock [madcow], if you know of another please post a link). Dual deploy with an Eggtimer TRS (antenna probably poking out either up or down, and yes I know the CF will block the signal before it's deployed). I think it's light enough that drogue can just be a streamer for visibility? Size of kevlar shock cord recommended? Will shear pins be needed for something this small? How about the coupler for the avionics bay--just cardboard, quantum tube, fiberglass? Any reason to do anything besides cardboard for the motor mount tube? How about just some rings and omit the mm tube?
Went with 38mm body tube because I think I want the strength of thru-wall fins. Opinion on that? Haven't decided what to make the fins out of, thoughts? Fins are that shape to hopefully protect from landings a little more, plus it looks cool. I can get a little more stability if I sweep them back though.
I have a 3d printer and would make the av-bay mount myself with polypropylene filament. Can 3d print other parts if it would help?