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Ready to have a blast with your own rocket?
#ROCKET SCIENCE PHYSICS SCIENCE KIT HOW TO#
The Procedure provides handy tips and hints on how to create your own rocket and provides the procedure to perform a scientific test on how payload affects maximum height reached. More aerodynamic rockets have a straighter flight path, resulting in more reliable measurements of maximum height reached. In addition, you will improve the bottle rocket by making it more aerodynamic. To do so, you will need to add a payload bay to the most basic bottle rocket, an upside-down water bottle. In this science project, you will measure how adding payload (quantified by its mass) affects the maximum height your rocket reaches. Nomenclature of the different sections of a bottle rocket. Fins are attached to the neck of the bottle to help stabilize it during flight.įigure 5. The bottom of the bottle (at top) is covered by the nose/payload bay, and body of the bottle is the propulsion chamber. Figure 3 illustrates how air pressure inside the bottle pushes on the walls of the bottle, as well as the liquid inside the bottle.ĭiagram of a bottle rocket showing the nose and payload bay, propulsion chamber and fins. Air pressure-or how hard the air presses outward from the inside of the bottle-builds up in the bottle.
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A special bottle rocket launcher will allow you to add air to your bottle rocket. Before liftoff, the bottle rocket will be partially filled with water and partially filled with air. Your bottle rocket will not use combustion instead, it will eject water and air to create a forward thrust. In aerospace (which is the branch of technology and industry concerning aviation and space flight), rocket engines eject exhaust gases produced through the combustion of fuel and accelerated to very high speed. Rockets use Newton's third law of motion to create a forward thrust they eject mass backward at high speed (the action) to achieve a forward push (the reaction). The action on the rocket is the force of fuel and exhaust being ejected from the bottom of the ship, while the reaction is the upward force applied to the body of the rocket.įigure 2. Diagram showing action and reaction forces on a rocket.