Rocket blog

• Analysis questions
• What design features were included in your rocket design?
• We made it longer and more massive so that it can have more inertia when flying. We also added two parachutes so that there would be double the hang time. Our bottle rocket was 3 bottles long and weighed around 1lb. We had weights in the nose cone so that i'd be even heavier. The rocket also had 4 fins that were 6'' by 5'' by 3''. These helped in the air time tremendously. 
• What worked as planned?
• The parachutes ended up working on our last try and clutched it up so that we could get 10.16 seconds. These parachutes didn't even open all the way and still were able to increase our down time by 4 seconds. The fins also helped to increase our height by about 30ft and then helped to increase the amount of time to have the parachutes deploy. 
• What did not work as planned?
• Nothing really did not work. All of our things worked as planned. 
• Your launch conditions:
• psi at launch
• Our PSI at launch was 80 psi. 
• Amount of water in bottle
• We had around 1 liter in the fuel tank. 
• What this project taught you:
• The physics learned
• This project taught me that you should always have parachutes when you're in a plane. That way if you need to jump down your velocity downward will greatly decrease and they also will prevent you from splatting on the ground. They do this by increasing the amount of time during impact, and also by slowing you down. 
• the "other" things learned
• Other things that i learned were wind plays a HUGE role in real life. If there was no wind we'd probably not have succeeded but also we probably would not have failed as often. 
• Final thoughts
• This project was super awesome and Mr Blake and Mr Adams should keep doing it every year. This project rocks especially for a 3rd semester project. 

The Mountain Dew bottle is the fuel tank where 1 liter would be poured into. We'd then pump to 80psi and launch.  There are 2 other bottles beside the mountain dew bottles. These bottles were used to add length and more mass. There were double parachutes each parachutes diameter was about 1 1/2 feet wide. This helped us to slow our fall time which helped us to get 10.16seconds. The coke bottle was the top of our rocket and we also used a funnel with clay inside of it to help us have more mass. Chee over 10 seconds!! 

Materials

Three 2 liter bottles 
1 large funnel
Duct Tape
2 Trash bags
String
Hot glue
1 liter of water 
Scissors 
Cardboard for fins.
A pencil
Of course you'll need a launcher which is a bike pump and a rubber stop with a tube that connects to the bike pump.