launchable model whistle rocket

thingiverse

This functioning rocket boasts two whistles within its nose cone, producing sound upon launch. The middle tubes can be stacked for size customization. Untested flight stability may vary with differing tube counts. Print it solidly using PLA, as it prevents warping and cracking in thin walls. Compatible with A-C motors; the first tube fits within fins, while the last accommodates the nosecone.