Today was our second day launching our bottle rockets! Our first launch, we used just a “naked” bottle. Our launch was good, the bottle remained in the air for about four seconds. Next we looked at this website: http://www.lnhs.org/hayhurst/rockets/ and used it to create our fins and to elongate our rocket. We decided to use four fins on our bottle rocket. We duct taped the fins on and then headed to Konia to launch. After launching the rocket twice, we noticed it wasn’t too stable and it stayed up in the air shorter than our naked bottle. We came to the conclusion that we didn’t put enough pressure and the fins weren’t sturdy enough. So to help that, we are going to make the fins sturdier and make sure they’re more secure on our rocket.
Job well done today! The website above looks very informative with great step by step diagrams. Lehua and I will definitely try this in our next trial. Thank you!!
ReplyDeleteThats a great rocket, you're right fins are pretty much useless if they aren't sturdy. They actually just make things a lot worse by causing unnecessary drag while not serving their purpose of preventing horizontal movement if they are flimsy.
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