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(54 votes) Published: Apr 13, 2005 6:53 a.m. In 4 Favorites Lists Viewed 4409 times
This is my first egg. i dont really know WTF an egg is but i almost get the full gist of it. I checked this egg for mistakes aswell. (i dont know if you need to do that or anything. LOL)
This egg is in paragraph form so its not to long. (what l’m trying to say is just f’en read it.)
As anyone involved in the hobby of model rocketry already knows, commercially manufactured model rocket engines cost a bloody fortune, it is much more practical and much less expensive for you to simply make them yourself.
You can make them from materials available to anyone at your local drug, hardware, and grocery stores, and they’ll cost you very little each. Simple and inexpensive to make, these little beauties will take a featherweight model 200 to 300 feet into the air.
A small investment will buy enough supplies to make several hundred rockets, and each one will do anything a commercially made engine will do including igniting second stage rockets and popping parachutes.
Here’s how to make them
If you don’t already have these items around your house, go out, hunt them down, and purchase them as follows. Go to the local drug store or chemical supply company and buy a small container of saltpeter and a small container of flowers of sulfur. Saltpeter is also known as potassium nitrate. Both chemicals are over-the-counter items and do not require a pre5cription for purchase. The saltpeter will come in a 4 to 6 ounce container, and the sulfur will be packaged in the 2 to 4 ounce size (convert the ounces to grams on the net if needed) . One package of each is sufficient for at least one hundred rockets! Next go to the local supermarket and purchase a small package of powdered white confectioner’s sugar, also called icing sugar. Sugar is the fuel in the rockets you’ll be making, and saltpeter (potassium nitrate) is the oxidizer. The sulfur plays a role in releasing various gases during the rocket’s flight, thus raising propellant impulse and improving rocket performance in general. Combine these three substances in the following proportions by weight.
SALTPETER.......63%
SUGAR...........27%
SULFUR..........10%
It has been reported that you can use red iron oxide in place of the sulfur Ideally you should have some accurate weighing equipment (a triple beam laboratory balance), or a gunpowder scale, but if you don’t, a simple postal scale or diet scale will do. The more accurate you measure your ingredients, the better your rockets will perform. These little rockets were designed to fly with a very low impulse propellant, and we wanted to make the mixing process as simple and safe as possible, so here’s what i came up with.
Place the properly measured chemicals into a small plastic refrigerator container with a tight fitting lid (a half-pound or one pound soft margarine container works great). Break up any lumps ahead of time with the flat end of a large wooden dowel or screw driver handle, tighten the cap onto the container, shake the ingredients in the container together for about three minutes, and you’re done!
WARNING Never attempt to mix the above-listed chemical together in a blender or any kitchen appliance designed for mixing or grinding food! Friction will generate heat, and a blender can rapidly (in the vicinity of the bearing and blades) cause the mixing powders to reach the ignition temperature. Six ounces of these chemicals in a blender can cause a flash fire large enough to set fire to your entire kitchen, and after that, your house! As i said before, i’ve designed these rockets to use low impulse propellant, and the length of the core in each engine is just about right to handle the mixture that you’ve prepared from the instructions above.
NEVER attempt to load one of these homemade rockets with anything other than the properly prepared propellant described in this report (egg), and never attempt to convert or reload a commercially manufactured motor with this homemade rocket propellant! The finished propellant will be a pale yellow colored powder, and if you were to simply load it into a cardboard tube with a hole in one end, it would burn too slowly to allow a rocket to fly. In order to use this slow-burning material to propel your device into the air, you have to get the powder to burn all at once, and you do this by introducing a core or bore hole right through the middle of the propellant charge and igniting the propellant all along this core all at once. Once you’ve done this, the propellant will burn along its entire length beginning at the center and burning outward to the inside wall of the motor casing. Rockets constructed in this manner are called core-burners, and they are ideally suited to the use of slow-burning, homemade, low impulse propellants.
This particular mixture of chemicals is hygroscopic. That is, if left in an open container, it will absorb moisture out of the air and dissolve itself in it. If you don’t keep the propellant container tightly sealed, your propellant will get damp and not burn properly, but if you keep the lid on, it can be stored indefinitely.
Here’s an actual recipe you can use. It will make a little over 6 ounces of rocket propellant, and since each rocket only uses 3 to 4 grams, it is enough to make about eighty rockets. For those of you with metric weighing equipment we’ve written the recipe in grams.
SALTPETER..................113.2 GRAMS SUGAR.......................48.5 GRAMS SULFUR......................18.0 GRAMS
Remember when you’re weighing things that you must subtract the weight of the container in which you are weighing them.
Please leave a comment and rate this egg. Let me know if you have tryed this.
HAVEFUN
Apr 13, 2005 11:22 am - Definently 5, Clear understandable and original i dont think this is a C and P if it is show me where, he might of taken parts of another egg but thats what this site is for shareing ideas to increase your own and come up with better ones and then share.... Beast mode man beast mode.
Apr 13, 2005 12:18 pm - just because the kid didn’t figure out how to make a rocket engine by himself doesn’t mean anything. he reaserched how to make a rocket engine and seemingly put it in his own words.
give him a break. he spent alot of time on this and made a good egg. i’m willing to bet that rooster doesn’t have an egg as good as this.
if you would like to knw more about eggs; just click this link for the "making eggs" group. It povides information about making eggs for the new members to this site.
-check in periodically and give or receive tips in a variety of egg making categories from other members as they are added.
http://www.rotteneggs.com r3/show/se/60131.html
Apr 13, 2005 4:21 pm - Thanks guys. For your information, rooster this egg is not copied. If it is i would like to know where because i didn’t learn how to make thid from the net!
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