Basic_Rocket_Stability

# Basic_Rocket_Stability - Basic Rocket Stability Adapted...

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Basic Rocket Stability Adapted from Ed Bertchy’s web site : http://www.azstarnet.com/%7Eelb/rockets/

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Most discussions of rocket stability start with a weather- vane. The principle of air pressure blow- ing against an object and causing it to turn is well demonstrated by a weathervane. Now, lets put a rocket in place of the weathervane. Model Rocket Stability: The Basics If you want to start scratch building your own rockets, it helps to understand a little about the theory of how rockets fly, what makes them stable, and how to check it for yourself. The Weathervane Model
Pretty simple? Don't worry about the Center of Gravity and Pressure just yet. We're getting to that. The idea here is that it is the pressure of air flowing over the rocket which pushes it around like a weather- vane. My example is rather two di- mensional. Real rockets are affected like this from all directions. How to find the Center of Pressure of your Rocket Step 1: Cut out a profile of your rocket in cardboard. It doesn't have to be the same size, but it does need to be accurate in shape and

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## This note was uploaded on 05/29/2008 for the course PHYS 131-133 taught by Professor All during the Spring '08 term at Cal Poly.

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Basic_Rocket_Stability - Basic Rocket Stability Adapted...

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