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Cored Rocket |
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Not much needs to be said since almost everyone has seen a rocket! But a rocket is a device that emits gasses at high speeds which exit through a nozzle which propels the Rocket forward. Often they contain a Header on the top which will create an effect at the end of the flight. There are two standard types of bottle rocket : Cored and End Burning. Since the cored is more powerful and can carry payloads easier that is what I describe. |
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What You'll Need:
1. A tube for the Rocket body. ( a tutorial on making tubes can be found HERE)
2. Clay (ground up cat litter works excellently)
3. propellant ( 60/30/10 KNO3/C/S is standard)
4. Rocket Tooling (can be made HERE , or bought HERE )
5. A guide stick
6. General equipment (glue,scissors,etc...)
Details on equipment needed for Headers will be explained later. These are for a simple Rocket like the one in the photo to the left. |
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These are either pressed or rammed.... Pressing is easier,safer, and more professional but ramming works just fine with some extra precautions. So I will discuss that. |
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Headers
Under Construction |
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Set your rocket tube on the tooling. Pour a small amount of clay into the tube. Slide the rammer (dowel) into the tube and give it several wacks of a hammer. Light but firm normally works well, to light and the Rocket won't work; to hard and your rocket cracks the tube... I do 10 moderately hard strikes. Keep adding small amounts until the endplug is as thick as one diameter of your rocket. So for 3/4" rocket the nozzle should be 3/4" thick. |
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Now is the dangerous part.... Make sure you have welding gloves and a face shield (atleast safety glasses)! I personally have never had an accident but it can happen!
Pour small amounts of Propellant in and ram/press it in. Use small incriments as it makes a superior rocket and lessens your chance of failure! Fill the tube up to 1/4" or 1/2" from the top depending on how thick you like your endcaps! |
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This is the same as the first step but keep the Safety Gear on, the propellant is now in there! Just ram/press the clay into the remaining tube! |
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A guide stick must be attached to a rocket in order for it to fly! The sticks on rockets are not just so they can be stuck in the ground as I have often heard..... they stabilize it allowing the rocket to fly strait! Get a stick/dowel I use about 1/4" diameter dowels. Glue one of these onto your rocket. Now to balance it hold your finger just below the nozzle and the rocket should balance ther... If it leans towards the rocket than it needs a longer or heavier stick, but if it leans towards the stick than the stick is to heavy and needs trimmed until it balances!
Well ther ya go have fun and be safe! |
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