As I was leading Tufts Rocketry's NAR certification team, I also contributed to the more experimental rocket the rocketry team was designing from scratch. This rocket was to have "dual deploy" capability, or the ability to fire a drogue parachute and a main parachute from its onboard flight computer.
For this project I was in charge of the nose cone; I researched nose cone shapes and designed a nose cone in SolidWorks which was 3D printed by HP labs. I also designed and fabricated the assembly which held the fins together and housed the rocket motor. I CADed this assembly in SolidWorks, and then lasercut it from masonite boards. During flight, the fins successfully controlled the rocket's ascent. The rocket ultimately crashed due to a problem with the parachute, but my fin assembly was the only structure to survive intact.
During my sophomore year, I also designed the fin assembly for our experimental 2-stage rocket. I completely changed the design and made it more robust while also removing mass and making it more easily manufacturable.
The team preparing the rockets on launch day.
Updated fin assembly design for the 2-stage rocket.