Water Rocket Blogging Citation

Frietas, Rockland. "Bottle Rocket Blogging." Bottle Rocket Blogging. Web. 20 Apr. 2011. <http://mrfreitasprojblog1.blogspot.com/>.

NASA Water Rocket

We obtained great information from the NASA website which help us create our water propelled rocket.
The three greatest bits of information they gave us was: timeline or rocketry, the comparison to a water rocket and a real NASA rocket, and parts of a water rocket.


"Water Rocketry - About Bottle Rockets." Space Flight Systems Directorate / Glenn Research Center. Web. 20 Apr. 2011. <http://exploration.grc.nasa.gov/education/rocket/BottleRocket/about.htm>.

Great Presentation of how to make a water propelled rocket

https://www.youtube.com/watch?v=o8Ra6F2ai7o

A BIG THANKS

A big thanks to Mr. Freitas as his blog http://mrfreitasprojblog1.blogspot.com/ for helping us shoot for the stars

Conculsion

In conclusion the small things that matter is how much water you put in the bottle, if you put fins or not, what cone you put on the top, and it has to be somewhat light. The biggest thing that we found was the parachute. Thats what makes or breaks this project. This is that key to 10+ seconds in the air. Overall we thought this was a fun and stressful project but we enjoyed doing it. Thanks freitas ;)

Launch day 3 (final day)

Today was the last day for launching. We started off with our original rocket and things weren't going our way so we decided to experiment. First we filled our bottle about 3/4 with water. We pumped that bad boy up and all it did was make a nice stream of water with no real hang time for the rocket. Someone pointed out that the hole in the parachute was unnecisary so we needed to make a new parachute. When bianca's group's rocket surpassed the 10 second limit we were inspired and wanted to make our rocket similar to there's because it worked so well. So our rocket became a stripper and took off all its accesories. It looked like a bottle with a parachute and a cone and like a 4 year old created it but what hell we thought it would work. We made a new parachute to replace the old one. After our first launch we set a PR (personal record) of 6.5 seconds. Our previous launches were: day 1- 3.5 and day 2- 4.5 so the improvement was nice. To get that ten seconds that we needed, we thought that the parachute needed to be closer to the bottle, resulting in less string distance between the bottle and the parachute. It made a little difference but was a significant enough difference to get us 10 seconds. In the end we finished with a 6.75 air time. If we were to do this project again the rocketeers would've gotten more precise measurments, made a better rocket and launched it to the moon :)

Launch day 2

Launch day 2: parachute, fins, cone

launch day 1: no parachute, no cone, 3 fins.

(picture not movie)

Launch 2

Today was our second day of launch. Our recent attachments to our rocket, is a our very own, self made Parachute. Our parachute is a white garbage bag with a whole in the middle. We attached to our rocket by attaching ropes to the plastic bag and rocket, and then duct taping it to the bottle. Our first launch with our newly made parachute was a fail, it didn't come out after we shot the rocket. Therefore, we made the string shorter and loosened the cap a little so that the parachute will exit faster.  Our second launch had a much better result with the parachute coming out after launch. We could conclude that making the string shorter and cap looser was a big factor in making the parachute release faster. Finally our last launch of the day was a 50-50 thing. It was good because our rocket flew high, because we figured out that our rocket is heavy and needs more water pressure, and bad because the parachute didn't deploy. The duct tape on our rocket was a lot, therefore making it heavy. Since the rocket is heavier than a usual rocket, we had to add more water pressure in order to launch the rocket higher. In our next launch, we will make sure to include these factors in it. We will work out the technical difficulties in future class periods.

We should have used less fins to make less weight on the rocket. Also, two fins instead of three would have been helpful because it makes the structure of the rocket more slimmer, therefore, making the rocket more aerodynamic. 

Making the rocket more thin makes the rocket more aerodynamic. We should make it more aerodynamic to make the rocket shoot higher.

Images

"Bottle Rocket - Towncraft Image." Towncraft the Movie. Web. 23 May 2011. <http://www.towncraftmovie.com/image/732>.

"2 Liter Bottle Rocket." Exciting Scout Crafts. Web. 23 May 2011. <http://www.e-scoutcraft.com/activities/bottle_rocket.html>.

"Bottle Rocket - Science Olympiad Student Center Event Wiki." Web. 23 May 2011. <http://scioly.org/wiki/Bottle_Rocket>.