Twirly Rocket
thingiverse
Compressed air rocket designed to minimize velocity on descent by twirling downwards, compatible with 3/8" tube from AirRocketWorks.com launcher. WARNING: Although tested at 120psig launch using PLA, results may vary due to printing parameters and material. Launch was successful, but rocket failed to twirl down or launch vertically due to flexible fin design. Additional support added via soldering iron and raw filament prevented over-flexing prior to apogee. Rocket twirled upwards briefly before tumbling descent limited impact velocity. After multiple launches, fins were fixed to rocket's sides to assess flight characteristics without tumbling. Rocket flew well into street, crashing. Own launcher built based on AirRocketWorks.com instructions and pictures found here and here.
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