Our first prototype for the rocket’s nose cone was made from a hollow paper cone that we lightly filled with balsa wood shards using hot glue. Although this version was easy to make and very light, it turned out to be too weak and unstable because it was mostly hollow. It didn’t hold up well and could easily bend or break.
For our second attempt, we made the nose cone out of solid balsa wood. This version had a much better weight—not too heavy, but not too light either—and because it wasn’t hollow, it was much stronger and less likely to fall apart.
The body of our rocket was made using five pieces of printer paper, tightly rolled so that the inner diameter matched that of the motor and secured with tape to form a sturdy tube. Inside the body, we added a balsa wood stick on the inner wall to help stabilize the motor and keep it in place during launch.
We attached four fins made from balsa wood to the lower part of the rocket, slightly hanging off the end. These fins were hot-glued onto the body and were important for keeping the rocket stable and flying straight.
Finally, we added two short segments of a straw to the side of the rocket, which allowed it to stay aligned on the launcher and use the rod to guide it smoothly during takeoff.
The parachute was made from a plastic trash bag, cut into a circle with a 20 cm radius. We attached four 30 cm strings evenly around the edges to help it open up correctly. During testing, we tossed it from the second floor, and it worked well—the parachute slowed the descent noticeably, showing that it could help reduce impact after launch. We also learned that packing it the right way inside the rocket was important. It had to be folded neatly and stuffed carefully to make sure it would deploy smoothly during flight.
During our test launch, several parts of the rocket worked successfully. The rocket reached an impressive height, showing that the motor was secure and the design was aerodynamic. The body of the rocket stayed strong and kept its shape throughout the flight and after the impact of the landing, which proved that the construction was solid and could handle the force of launch, flight, and landing.
However, there were a few issues that needed improvement. Although the nose cone popped off as planned to release the parachute, the parachute got stuck inside and failed to deploy. This reduced the nose cone's ability to land safely. Additionally, some of the fins came loose. It wasn’t clear whether they detached during flight or as a result of the landing impact, but since the rocket did not fly in a straight path and veered to the side, it’s likely that the fins detached mid-flight. These issues showed us that we need to pack the parachute more carefully and reinforce the fins using stronger attachment methods.
New Parachute: For the new parachute, we designed it in the shape of an ellipse, with a small radius of 11 cm and a large radius of 13 cm. The string on the long side measured 15 cm, while the short side had 16 cm. Additionally, we attached the parachute to the outside of the rocket to help it deploy more easily, addressing the issue we had in the previous launch.
Final Launch: Our rocket was able to reach a great height, and the ozone strip showed a slight color change, indicating it had some exposure to the atmosphere. The parachute deployed successfully this time, thanks to the new and improved design, allowing the rocket to land safely without the ozone strip getting contaminated by the ground.
Final Launch: Our rocket reached a high altitude, and the ozone strip showed a slight color change, indicating some exposure to the atmosphere. The parachute deployed successfully this time, thanks to the new and improved design, allowing the rocket to land safely without contaminating the ozone strip with the ground.