Retro Spacer - 3D Printed High Power Rocket

thingiverse

Retro Spacer 24 Have fun! The .zip file has all the files and instructions <a href="https://a360.co/2V2deyP">Fusion360</a>.</p> More information: This is a proof of concept rocket model. It is suitable for mid-power and small high powered (HPR*) flight. Having personally successfully flown a CTI F-85 (technically a high powered motor) to 1,671ft and recovered. This current model uses a 24mm motor mount (reloads). The plan is to scale this model for 29mm motors and prototype. The goal is a successful H-impulse powered flight, to be used as a Level 1 certification model that can be entirely 3D printed for low cost by the flyer. Features: 1) Low cost, easily printable. 2) Removable and Replaceable fins. Certification would be much improved even despite a broken fin(s). If the flier can demonstrate to the certifying authority (NAR, TRA, MDRA) that the fin is in fact replaced(able) and the rocket can easily fly again (be ready to fly again), then certification chances are improved. 3) Positive motor retention. Use of an Aeropack aluminum retainer to hold motor and motor casing. 4) Chute baffle: Protects parachute from motor ejection flash. It is still recommended to use wadding and/or nomex for flame suppression, however the baffle does work 5) Ample available space in nose cone for electronics. Only slight modification to nose cone bulkhead for access would be necessary. Future Plans: -Scale to 29mm motor mount to fly H and I-impulse motors for Level 1 certification. See <a href="https://www.thingiverse.com/thing:4563511">RetroSpacer_29</a>.</p> -Launch Lug modification: suitable for launching on a 1010 rail or up to a 1/4" rod. -Redesigned Nose Cone bulkhead for access. (Electronics, altimeters, GPS, etc.) -Redesigned baffle to support insulation for blast protection. -Redesigned fin can for positive retention of removable fins -Camera bay in payload section -Integrated AV bay for flight computer and battery (I typically use Missile Works, so most likely RRC2+ or RRC3) This wouldn't be dual deploy, but as an alternative for motor ejection, or as a backup to motor ejection. It could be dual deploy with tumble followed by a chute tender or cord cutter, but that would be up to the flier to do that. *Note: While this model can simply be built for display...it's kinda cute, it is meant to be flown. <b>HPR</b>, means <i><b>High Powered Rocket</b><i>. These are NOT Estes type model rockets. While a 24mm composite motor is not "big" it is exponentially more powerful than even big Estes D or E black powder motors. Flight is meant to be controlled and by knowledgeable rocketeers who adhere to strict safety protocols and procedures.