# Bottle Rockets

Topics: Rocket, Model rocket, Bottles Pages: 8 (2650 words) Published: April 7, 2013
The effect of a Bottle Rockets dimensions on the rockets hang time

Respectfully Submitted to the Science Department
of Blanche Ely High School
Bryan Berrios
Andre Edwards
Rashean Senior

Abstract
Bottle rockets, people see them as middle school science projects where kids have fun and build little rockets. Actually there is a lot behind bottle rockets, it’s more than just throw some plastic bottle together and glue some wings to it and fly it. The researcher chose this topic because in his class they are doing the bottle rocket project and he wanted to find out which rocket was more efficient for hang time. So the experimenter built some rockets and launched them and gathered the results. In this paper there is some history of rocketry which the researcher used to design his rockets. The results are also contained in this paper; they show how different dimensions of water rockets affect its hang time. The way the researcher built the rockets was fairly simple he first used a 2-liter bottle as the base, then he cut another bottle in half and taped it to the bottom of the base bottle, after he attached a plastic cup to the half bottle, and finally he taped the top half of a small Coke bottle. After launching and gathering his data he came to the conclusion that his hypothesis was right long rockets with medium size fins preformed the best and had and average hang time of 7.16 sec. Other rockets performed well but they did not have the greatest hang time of all the launches. The conditions were equal for all rockets so the hang time was not affected by other variables.

Introduction……………………………………………………. p.4

Methods Research……………………………………………... p.8

Results………………………………………………………….. p.9

Discussion/Conclusions……………………………………….. p.10

References……………………………………………………... p.12

Appendix………………………………………………………. p.13

Around 300 B.C., steam powered rockets were the first rockets to be developed and an initial apparatus that achieved the law crucial to propel rockets was a model pigeon constructed of wood and held from the end of a pivot bar sitting on wires. Steam that had escaped actuated the pigeon, which was maintained by the cable. The pigeon used the same action-reaction principle as the rocket, which was not stated as a scientific law until the 17th century (Nasa.gov, 2010). But, the first true rockets were mistakenly created in 100 A.D. by the Chinese. The initial perception of this marvel definitely caused more investigation. The Chinese connected bamboo sticks with arrows and shot them with bows, concocting an instrument named the fire arrow. Possessing more accurate range than regular arrows, fire arrows ultimately were added to the arsenal in battle around the 10th century. The bow was not essential to getting the fire arrow aloft and thus, the first true rockets were born (Nasa.gov, 2010).

During the 13th to the 15th century, the improvement of rockets was being explored all over the world. An English monk named Roger Bacon dedicated time to better forms of gunpowder that would considerably strengthen the range of rockets. A Frenchman, Jean Froissart discovered that precise departures could be accomplished by discharging the missiles through tubes. In turn, Froissart’s concepts lead to the creation of the modernized bazooka. An Italian man, Joanes de Fontana, created the surface-running rocket-powered torpedo for igniting the opponent’s ships on fire (Nasa.gov, 2010). As you see rockets have existed for a long time. The same principals used for past rockets were adopted by the researcher to designs these water rockets. Know you may be wondering what are water rockets “Water rockets have been a source of entertainment and education for many years. They are usually made with an empty two-liter plastic soda bottle by...