ZF 3 The 100% 3D Printed Rocket

thingiverse

Hi my name is Zander, for the last few weeks iv built three model rockets using 3D Printing. Why? Because rockets are incredibly cool! This is the third revision and the first public version. The rocket uses 1 C6-7 Rocket Motor. This rocket does not need any superglue unless you add a parachute, or Glue the motor to the engine compartment and the EC to the Body tube(Adds more safety and makes the craft more rigid Recommended). The craft fly's very stable at high speeds. The Center of mass is also quite low which means you can put weight anywhere above the Engine Compartment without messing it up, and giving the rocket even better flight characteristics! So feel free to stick in a parachute and some altimeters and have fun! BTW the circuit diagram is for a igniter if you are interested. I left out resistor values for the led is 360Ohm. Print Settings Printer Brand: RepRap Printer: Prusa I3 Rafts: Yes Resolution: 0.25 Infill: 25% for Engine Compartment 100% for everything else Notes: I will be adding different size engine compartments for different motors, so please make your best judgement when choosing infill for them. Post-Printing Finishing Some sanding/gluing may be needed for lose or very tight clearances. How I Designed This When designing this rocket I used autodesk Inventor 2017, A calculator, and lots of google. The fins are large to put the center of mass above the center of pressure because having the cop above the com makes the rocket unstable and the rocket will almost certainly fly with a dangerous unpredictable flight path. I also took into the consideration engine sizes with my engine compartment so that a larger or smaller motor may be used if needed. Custom Section How to calculate the heighth of a rocket using Trigonomatry Here is a video to help you understand how to calculate the height of the rocket. You will need a Tape Measure, and a moveable Protractor with a sight.