Backyard Ballistics: Build Potato Cannons, Paper Match by William Gurstelle

By William Gurstelle

Traditional fogeys can build thirteen outstanding ballistic units of their storage or basement workshops utilizing reasonably cheap loved ones or ironmongery shop fabrics and this step by step advisor. transparent directions, diagrams, and pictures convey find out how to construct tasks starting from the simple-a match-powered rocket-to the extra complex-a scale-model, table-top catapult-to the offbeat-a tennis ball cannon. With a robust emphasis on security, the ebook additionally offers tips about troubleshooting, explains the physics in the back of the tasks, and profiles scientists and remarkable experimenters equivalent to Alfred Nobel, Robert Goddard, and Isaac Newton. This publication might be necessary for the legions of yard toy-rocket launchers and fireworks fans who want on a daily basis used to be the fourth of July.

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Extra info for Backyard Ballistics: Build Potato Cannons, Paper Match Rockets, Cincinnati Fire Kites, Tennis Ball Mortars, and More Dynamite Devices

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Attach the 1/4-inch copper tube to a hinge by using adhesive or brazing. Attach the hinge/tube assembly to the small wooden block to use as a launching platform. 5. Adjust the height of the screw to launch the rocket higher or lower. 2. If building this launcher seems like too much work, you can make a fairly serviceable launcher by simply bending a paper clip into a launcher, although the performance of the rocket won't be the same. There are many ways to bend a paper clip into a serviceable launcher; experiment to see what works best.

K E E P I N G S A F E T Y IN MIND 1. The rocket travels quite rapidly and would, as you can imagine, cause injury if it were to hit someone. So, it is very important to aim the rocket away from people. 2. Pressurizing the rocket strains the plastic, so inspect the plastic soda bottle after every launch and throw it away when signs of wear appear. 3. If the rocket lands on a hard surface and gets creased, throw it away and build a new water rocket. 33 BACKYARD BALLISTICS B U I L D I N G THE H Y D R O P U M P R O C K E T The hydro pump rocket uses a stream of high-pressure water to provide forward thrust.

The narrow jet exhaust ports are delicate and easily crimped if you're not extremely careful when removing the pins from the foil head. Sometimes you'll remove the pins with no problem, and then crimp the jet ports simply by handling the rocket too roughly with your hands. 4. How far will the match rocket fly? Some people claim their best match rockets have flown over 50 feet. The distance will depend on how well you make the rocket, the weight of the match rocket, the amount of chemical energy stored in the match head, and so on.

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