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Bottle Rocket Procedure

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Introduction: Our challenge was to create a water bottle rocket, using 2-liter soda bottles, that will fly on demand to at least an altitude of 100 feet (30 meters) and land safely so that the raw egg aboard remains unbroken. Some specifications that our rocket needed to meet were to have a nose cone, 3-4 fins, and a crash proof container. Our rocket was required to be completely finished by the launch date, which caused us to rush through some parts of the construction process. One constraint that we had to deal with the entire time building was having no formal instructions to follow.We found this complicating because no one in our group had a lot of background knowledge nor experience about this subject matter before. Another constraint …show more content…
Less drag will help with the launch and the altitude the rocket travels. Therefore we chose to use a smooth bottle instead of a rigid Coca Cola bottle. For the nose cone, we chose a cone shape because it is streamlined, which serves for the same purpose as the body does. According to a webpage called 30 tips to get your rocket to fly higher, one of the tips was to keep the rocket as streamlined as possible. Considering the smooth surface of the cone shape, we thought that the amount of drag would decrease. We used the top of a 2- liter water bottle and multiple pieces of cereal box cardboard to make the nose cone for the purpose of a more smooth and defined shape. After figuring out the nose cone and body designs, we thought that our rocket had enough features to decrease the amount of drag to achieve the desired altitude. Therefore, we wanted the fins to only function as the stabilizer for our rocket. We chose to use 3 streamlined fins so that it does to not decrease the amount of drag too much that the impact during landing would destroy our egg. The fins are shaped as crescents and were made out of durable cardboard. We believe that the shape will cut through the wind better, since the aerodynamics of the fins will make the wind curve over the fins instead of turn on the fins as the rocket transitioned to the neck of the bottle. Based from the website 30 Tips to get your rocket to fly higher, it details how airflow around the fins is crucial for every successful rocket. For our parachute, we wanted to use a piece of plastic that was slightly thicker than a regular garbage bag. Our choice is supported by the data we found on a website called USWaterRockets.com, where it specifies that a

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