Behold! A hybrid-build rocket with 3D printed fins and traditional paper tube and balsa nose airframe. This is an adaptation of the design presented in the Nov/Dec 2016 issue of Sport Rocketry, by Julian Kwasniewski (NAR 95955). I made the aiframe longer to accomodate the heavier fins, moving the CG to where it should be. All fins printed on my Printrbot Plus. The rocket takes 3 of the D12 class motors, although I am inclined to give it E class motors. She is a beast at 3ft of rocket sexiness…I plan to mount a camera and when she goes up in May. I’m even debating fall away/strap on boosters…
amaizing
That’s cool, but wouldn’t it be easier to use paper or just cut plastic for the fins? Seems like that would only take a few minutes. I guess you avoid paint this way tho.
I wanted to get precise fins I can use on multiple rockets. This way I can print any quantity in any size. Plus I have very little post print machining, no grain issues and I can create all sorts of variations.
how you do it
@abubeker_khalid I am sorry, can you specifically tell me what you need to know? The airframe is made of BT80 tubes 18" long (x2) joined by a coupler. The nose cone is a suitable cone, and the engine mount comes from Sunward but is available from Apogee. I am using a kevlar shockcord for the parachute. The fins were done in TinkerCAD based on measurements in the Sport Rocketry article and printed to be 3mm thick.
That’s a great idea!
it is great
I want one!!!
My garage floor cover came wrapped around it. Perfect for my next rocket beastie
I will look into it for my mid range ones too