2 liter bottle rocket designs skin#
2 liter bottle rocket designs free#

(note: as you can see from this photo, I also added some additional tape to the fins for extra support. Use your extra markers to add any fine details or words (I put H20 on mine so everyone would know this is a water rocket). I used BLACK and a Bright Green so that the rocket would be easy to spot while up in the air! Decorate your rocket any way you like! Flames, spots, checkers, glitter, etc. > 2 (or more) cans of spray paint - Pick your own favorite colors! > Clear Shipping Tape - It's thicker than regular scotch tape and about 2' wide. > 2 (or more) Markers - I used Sharpies, one black and one Silver This can usually be found at any hardware store - kids, ask your parents for help with this glue.

2 liter bottle rocket designs free#

read all safety warnings before using.) Feel free to experiment with other glues.

2 liter bottle rocket designs skin#

Do NOT get it on your skin or eyes, or hair, etc. > 5 Min Epoxy (This stuff is nasty! Do not inhale, and use in a well ventilated area. To learn more about foam core try wikipedia: Foam Core can be found at almost any arts and crafts supply store. > 1 Large sheet of Foam Core (I prefer Black, but any color will do). > 1 sharp knife (kids get your parents help here!) I prefer X-acto brand for cutting foam core. This Instructable is set up for 2 liter sized bottles - feel free to adjust for any size though. Gravity gives weight to physical objects and causes them to fall toward the ground when dropped.- Note: There are slight differences in the openings of the bottle depending on the soda brand.

How does this law apply to rockets? As the water and air shoot out of the bottom of the bottle (action), the rocket is thrust Upward (reaction).Ī rocket undergoes several forces during flightġ7 Gravity A natural phenomenon where objects of mass attract each other How does this law apply to rockets? The heavier the rocket, the more force must be applied to get the same acceleration.įor every action there is an equal and opposite reaction. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object). Select a fin shape that is larger at the bottom than the top (triangle).Īn object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.Īcceleration is produced when a force acts on a mass. Add weight to nose which moves CG closer to nose.Ĩ Rocket Stability Ways to make Center of Pressure (CP) further from the nose to increase stability Place the fins as far to the bottom of the bottle as possible.

Should be closer to the nose than the Center of Pressure (CP).ħ Rocket Stability Ways to make Center of Gravity (CG) closer to the nose to increase stability Make the rocket longer which moves the CG closer to nose. The balance point Rocket would rotate around center of gravityĥ Center of Pressure Point where aerodynamic forces are equally distributedĦ Rocket Stability In a stable rocket, the Center of Gravity (CG) Presentation on theme: 'The Science Behind Two Liter Bottle Rockets'- Presentation transcript:ġ The Science Behind Two Liter Bottle Rocketsģ Aerodynamics The word comes from two Greek words: aerios, concerning the air, and dynamis, which means force Aerodynamics is the study of forces and the resulting motion of objects through the air.Ĥ Center of Gravity Point where mass is evenly distributed