Overview
Our plane is a toy that can be used to entertain and have fun. Our targeted audiences are kids of all ages looking to have a fun time with their friends. We have found various similar products on the internet, however, they all look extremely similar to each other. Our design converts elastic potential energy, when you rotate the propeller towards the right many times, to kinetic energy, when you release the propeller and let go of the plane, the propeller will pull the plane through the air.
Our design consists of many pieces, the main fuselage, which holds 2 magnets at the front to balance the weight, the left and right main wings, the right and left horizontal stabilizers, and the vertical stabilizer.
The fuselage will be made from two straws attached to each other using super glue. The main wings as well as the horizontal and vertical stabilizers will all be cut from a large piece of foam, minimizing the amount of foam we use. They would then be attached to the main body using a combination of super glue and hot glue. We will first directly glue the main wing onto the body using super glue, and then we would use very small amounts of hot glue on the front and back of the joint to make sure it is secured in place. The horizontal and vertical stabilizers will be attached using the same method but towards the end of the fuselage.
The propeller will be made from plastic cups from Sodexo. The cups are plastic, which is very durable and also light, they also had a natural curve which made them the perfect material to build our propeller from. The propeller would be attached to a metal hook that went through a short piece of paper straw to secure it in place, and a rubberband will be used to connect the hook with the end of the plane.
The foam was the only change we made. We originally planned to use straws covered with paper to lighten the plane, however the paper was too weak and ripped very easily. Another problem with the initial design was the straws that would hold the wing in place. We could only find plastic straws that were about 15 centimeters, not even half of what the wingspan was. Therefore, we decided to use foam which is a light weight and durable material.
From this process, I learned the importance of planning carefully and ensuring everything could be completed in a timely manner. Since I had just thought that the propeller would work as well as ones displayed in videos, yet I did not think about how they could spin so smoothly. I also learned how important it was to know what kind of materials were available to us, and to make thoughtful decisions when changing or using different kinds of materials.
Rubric
Strengths – Clear impact on the intended audience, analysis of precedents, documented design process and success criteria.
Weaknesses – Not doing enough research on how the propellers were able to spin in the videos, and the materials we used had some impacts on the environment such as the plastic cups we used for the propellers.
Success Criteria:
Strengths – We met three out of the five success criterions we listed, and we were able to accomplish the goal of making the plane fly.
Weaknesses – We were unable to make use of the propeller, which was the main part of this project. We thought that by just putting them in place, it would work as effectively as in the various tutorial videos on YouTube, however we ignored the existence of friction between the propeller and the piece of straw that was holding it in place, which caused the propeller to be stuck and ultimately taken off to ensure stable flight.
In conclusion, I am satisfied with our product, although we didn’t effectively manage our time to make improvements, we did construct a working plane that was stable, and could fly a good distance before hitting the ground. However, there are also a lot of challenges. Firstly, we missed the fact that friction played a big part in stopping the propeller from rotating. If we had more time we could possibly have come up with a solution to solve the problem. Another challenge we faced was making sure that the wings are placed exactly at the same position and angle, since the positioning of the wings played a big part in keeping the plane stable while it flew. Overall, I enjoyed the time we had spent working in the design lab.