Lay down a tray, tarp, or garbage bag as your launch pad, and put the cup/jar in the middle of the launch pad. This will help you catch some of the exhaust and keep the environment clean (especially if you are using baking soda and vinegar) when we finish up! Solid propellant comes in "grains". Grains are basically just propellant segments that get loaded into a motor casings The winner agrees to the use of his/her name and image in any publicity material, as well as their entry. Any personal data relating to the winner, or any other entrants will be used solely in accordance with current [UK] data protection legislation and will not be disclosed to a third party without the entrant’s prior consent. Do the same to the other semicircle. Instead of forming it to the body tube, you can form it to the first cone by forcefully pushing the second cone into the first (the first cone should be properly glued and dried). Now that the inner cone is formed, you can pull it out, add a little glue inside the first cone, and then reinsert the piece, again pushing forcefully. After letting the finished two-layer piece dry, I used the X-acto knife to trim off excess material and clean it up. Autonomous vehicle navigation technology is certainly nothing new and has been in the works for the better part of a decade at this point. But one of the most common forms we see and hear about is the type used to control steering in road-based vehicles. That's not the only place where technology can make a huge difference. Autonomous driving systems can offer incredible benefits to boats and marine vehicles, too, which is precisely why HD Hyundai has unveiled its Avikus AI technology -- for marine and watercraft vehicles.

The semicircle should begin to look like it's curving into a cone shape. You can begin making the cone tighter, working it until it matches the diameter of the body tube. Use clothespins to hold the cone in place while you glue the flap down. Insert the sheet metal tube into the can, making sure it fits snugly. The tube should extend about 1 inch above the top of the can. The combustion chamber will be located inside the sheet metal tube. Step 6: Add the grate

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Push the needle adaptor of the pump through the cork, it needs to go all the way through so you might have to trim the cork a little bit. By entering this competition, an entrant is indicating his/her agreement to be bound by these terms and conditions. You need four tins in all. One large catering-size tin and three smaller ones. The large can and one of the small ones should be open at one end only. The other two small tins should be open at both ends. Finally, use a piece of line, maybe about 1 foot long, to attach the nose cone to the inside of the body tube. This is so that when the ejection charge goes off, it won't blow your nose cone away; it'll still be attached by the line. The thrust curve of a motor is important to look at for seeing when the motor hits max thrust and how long it will provide different levels of thrust

The Solo gasifying stoves aren’t just lovely looking objects, they’re some of the most efficient stoves for cooking with wood. Cut a hole in the side of the big tin about 3cm up from the bottom. The hole should be the same diameter as the small tins.This can make it difficult to maintain the appearance of the stove, and it can also make it difficult to ensure that the stove is safe to use.