Multi Stage Rocket

Objective

The objective of this project was simple, send a two-stage rocket 5280 ft up, with a 1-pound payload, landing within a quarter-mile radius. The lessons learned and challenges overcome created lasting memories and unforgettable lessons.

The initial weeks of the build focused on intensive research and design. Using software like Fusion 360 and RockSim, we developed a comprehensive bill of materials and a functional design encompassing the recovery system, research payload, and propulsion system . In addition to staying under a budget of $1000, a detailed Flight Readiness Review (FRR) had to be passed in order to be cleared for launch.

Process

The multi stage propulsion unit we chose, utilized a solid fuel grain engine and a 440cc tank of nitrous oxide to propel the system. By opting for a smaller propulsion system compared to other designs, we aimed to create a more efficient and streamlined rocket to land within the 5280ft ±100 ft. As mechanical lead of the project, I was responsible for the design and fabrication of the propulsion system, recovery components, and fins in addition to managing other critical assemblies of the project.

Using RockSim, we meticulously calculated and refined the rocket's aerodynamics, center of gravity (CG), and center of pressure (CP). These parameters were iterated upon numerous times, taking into account environmental variables such as humidity, elevation, and wind to optimize performance.

The team dedicated countless hours redesigning, repairing, and mastering the intricacies of the build. Early mornings and late nights became routine as we worked tirelessly to bring the rocket to completion.

Launch

The team traveled to Fredericksburg for an overnight stay to ensure we were ready early the next morning to pass the rigorous Flight Readiness Review (FRR). After several hours of thorough preflight checks and a few last-minute minor repairs, we were prepared to launch—only to face worsening weather conditions. With no improvement in sight, we returned home, determined to try again the following day.

On the third day of our trip, we finally filled the nitrous oxide (N₂O) tank for the first time and achieved a successful launch and recovery! Our efforts were rewarded with a silver banner—the first ever for our school—and recognition as one of only four rockets, out of several hundred launched in Central Texas, to achieve this distinction.

The experience of designing, building, and launching a rocket was incredibly challenging, highly involved, and deeply rewarding. It was a journey filled with hard work, problem-solving, and unforgettable moments of triumph.