# Water bottle rockets

What have you learned about the history of rockets and space travel? Write a summary on the blog about something or someone you found interesting and tell why.
– I learned that back in the day they use rockets or engines, and I also learn that the soviet union launched the first satellite in 1957 and they also sent a first animal, a dog named Laika, into space. The US went on to land the first men on the Moon. Apollo 11 landed on the moon in July, 1969. Today the International Space Station (ISS) is flying overhead.

Now that you know about the basic parts of a rocket and what they do, write about each part and its importance in your own words. What will be different on your water rocket than on a “real” rocket and why?
-The nose cone is a protective cone-shaped case for the rocket. It is a important part of the rocket because it punches a hole through the atmosphere. The payload usually to carry something like animals, humans, scientific equipment, satellite and so much more. The prolusion chamber is like fuel tank but they use two tanks one for the fuel and one for the oxidizer, the oxidizer used for burning the fuel since there no oxygen in space. The fins is the most important part of the rocket, it is used for stabilized the rocket during flight and this cause aerodynamic and other forces, it is also adds drag so it will fly straight.

Write a little on the blog about how to find the Center of Pressure and the Center of Gravity on your rocket and why they are important.
-To find the center of pressure use a ruler pivot point, and try to balance the cut out profile of your rocket and make the point where it balanced. To find the center of gravity tie a piece of string around the body of your rocket and try to balance it, when you find the center of gravity mark the location of your string. The CG is the point where your rocket balances, the CP is the point against the which the wind appears to push. if the CG is in front of CP it will be stable, if the CP is in front of CG your rocket will go backwards.

Based on what you have learned about rocket design (nose cone & fins) describe what your rocket will look like and why you chose that design on the blog.
-it will look like there’s a two water bottles one will gonna be the inside the inside of the water bottle so its gonna be the nose cone and it will make drag [air friction] is the aerodynamic forces that opposes the rocket path through the air. The fins it will look like the last I made which is the paper rocket because it goes higher and stabilize the rocket better.

# Plane Trajectory – Dustin S

1. Draw a path of trajectory of your rocket
2. Which force is acting on the rocket at the moment of launch? (use arrows to indicate direction)
3. As the rocket was half-way up, which force(s) is/are acting on the rocket? (use arrows)
4. As the rocket begins to veer into another direction, which force is acting on the rocket? Explain why this is happening.
5. Did some rockets work better than others? How does the shape of the nose and fin effect the trajectory of the rocket? Explain in terms of the four forces that act on a rocket ship.
2. thrust
3. thrust and gravity
4. lift and weight
5. it work better than others. the shape of the nose makes it more aerodynamic and the fins balance the rocket so its fly’s better