We won with the farthest distance!! WOur rocket went 117 meters (386 ft) Were so proud!!!!

This is our final rocket. It isn't the best looking, but were proud. We decided to go for distance.

Contests

We are still not sure which competition to enter. We did excellent on both tests.

Rocket Launch Day 2

Today, we launched our rocket again, and we tried for distance. When we launched the rocket, it was so close to the fence of the track and football field! It went past the gallons of sand, which went to 90 meters, so we had to estimate around 130-140 meters. But, the one problem that we have after every test run is that the nose of the rocket keeps getting crushed. We've tried various things, but we just don't know how to fix it from getting distorted every time. We also launched our rocket for height, and got 86 meters. But, Kim and I are pretty sure that the people who were measuring the angles were not exactly accurate. At this point, we're not completely sure which competition to enter, height or distance.

Rocket Launch 1

We took our rocket out for it's first launch today. The first time we tried to launch, there was duct tape in the way. We had to cut the duct tape away from the rim of the bottle. Then, we went back out and it did awesome. We went a distance of 50 meters, and the rocket got an angle of 75 degrees!

Rocket Construction Day 2

Today, we connected the fins to the rocket. We measured the distance around the part of the bottle we were going to attach them to, then divided that distance by 3. (We used a string to easily measure the circumference of the neck of the bottle.) This found how far apart the fins needed to be apart from each other. We needed the fins to be as close to the cap as possible. We hot glued the fins on. We double checked that they were an even amount from each other. Then we wrapped the fins in duct tape to make the fins more sturdy. After we finished this, we put one more layer of duct tape on the middle of the bottle to be sure the two bottles would not separate.

Rocket blueprint

This is a picture of our blueprint for our rocket. We included the measurements and specific details of the design in the drawing. We included specifics such as the height, width, and circumference of the objects. We also made larger pictures of the fins to show how precise each measurement is.

Rocket Building Day 1

 

We origionally thought that we could pressurize the white bottle, then cut it off and use it as a cone. Then we realized we could use the second green bottle instead.

First we made the fins. We made sure they were all equal. We took two fins and hot glued them together to make it more sturdy.

We sanded the bottle to make it more aerodynamic in the front. We made it smooth.

We cut the second bottle's cap and bottom off. We put clay in to seal the hole.

We put the actual rocket into the cone. We wrapped it in duct tape to secure the two together.

Research Summary Day 1

Today is Mrs. Cheney's Science Class, we launched rockets. The rockets were filled with different amounts of water. There were also water bottles of different lengths, sizes and shapes. We saw the rockets launch. The following data is what I observed while the rockets were shooting.

1 Liter, 1/3 Full Water, High, Long Hang Time In The Air, Mediocre Distance.
2 Liter, Full Bottle, Flipped Everywhere, Water Flew Everywhere, Spun Uncontrollably.
2 Liter, Half Full, Really High, Not Smooth, Spun/Flipped, Did Not Go In A Straight Line.
2 Liter, Quarter Full, Really High, Spun, Uncontrollable.
1 Liter, Quarter Full, High, Flipping, A Lot Of Turning Over.
2 Liter, Quarter Full, Really High, Uncontrollable, Spun
1 Liter, Quarter Full, Not As High
2 Liter, Empty, Spun, Not As High

I have concluded that the highest rocket was a Quarter Full. There was a lot of flipping and turning in all of the rockets. All the rockets did not go in a straight line.