Kelly
Usually remembers to get the pointy end up
I'm designing a rocket for L1 cert, and I wanted to go scratch-built using materials I have on hand.
I have some 2" mailing tubes with a wall thickness of about 1/16". I designed a rocket in OpenRocket with a length of about 36" and using a 29mm motor. Trouble is, it only weighs a little over a pound (including the motor weight, and some NC ballast) and so it sims at close to Mach 0.7, 25g, and an altitude of over 3000ft with a minimal H motor. These seem like a bit more than I want to deal with for a cert flight. (Is it more than this tube, and 1/8" plywood fins, can take?)
Should I consider adding more weight, or making it draggier, to get a lower performance rocket?
Or, ditch the 2" tube and go to (say) 3" tube, which would naturally be heavier/draggier?
I have some 2" mailing tubes with a wall thickness of about 1/16". I designed a rocket in OpenRocket with a length of about 36" and using a 29mm motor. Trouble is, it only weighs a little over a pound (including the motor weight, and some NC ballast) and so it sims at close to Mach 0.7, 25g, and an altitude of over 3000ft with a minimal H motor. These seem like a bit more than I want to deal with for a cert flight. (Is it more than this tube, and 1/8" plywood fins, can take?)
Should I consider adding more weight, or making it draggier, to get a lower performance rocket?
Or, ditch the 2" tube and go to (say) 3" tube, which would naturally be heavier/draggier?