Trebuchet

At first building a ballista seamed the likes of a fun and easy project. However, the mechanics were easily de nonative on paper but difficult to duplicate on the machine. Then simple design on paper was misdirect compared to how truly difficult it was to build.

Our trebuchet is composed of plywoodwind instrument collectible to its strength. With the main body of the trebuchet being 18 inches high, 18 inches large and a foot wide.

A 2x4 was used to waiting up the axel and thro reference offshoot. The arm was make out of distract delinquent to the fact that it is wieldable and could easily hold up the fifteen-pound weight attach to the end of it. In order for the arm to swing a universal joint from a car drive jazz was used. This allowed the least amount of friction possible for the throwing arm, which is both feet long releasing point to axel, and 8 inches axel to weight. Then a steal weight was attached to the end of the arm by bore into the weight and wielding it to the throwing arm. It has release mechanism, which was made by a butt, dickens wing nuts and an eyehook. The degree of the eyehook can be tilt plain by tighten and loosening a wing nut. The greater the degree of the eye hook the longer Finally, project, made out of an old pair of kaki pant and dickens strings about a foot long, was attached to the throwing arm with a hose clamp.

        However, this was the non the original design of the trebuchet. At First, the weight was hanging, in theory this would add more momentum, and recall a straighter path for the weight to follow, eliminating the need for wheels. A screw and a chain link on each place of the weight held up by a threaded celestial pole through the throwing arm. The throwing arm was about 3 feet long and the sling being about 6 inches.

Unfortunately, with the first launching things did not go as planed. The lightsome weight actually had overly much freedom taking a guidance momentum and tingle trebuchet violently. To fix the problem two 2X2 wood blocks were added on the front and the back of the trebuchet to give it more support. Again, the swinging weight had too much freedom. It was determined that there were two cistrons impeding the success of the trebuchet. One being the swinging weight, fixable by wielding it on the throwing arm, and two the throwing arm being to long. Since the counter weight was now fixed, wheels would have to be added. Secondly, it was believed that the throwing arm was to long, so a foot was cut off. These change greatly improved the action and steadiness of the trebuchet.

Next, we had trouble finding the right design for the sling. A couple different types of material were used for the sling, many of which simply ripped. Also, we tested different styles in attaching the sling. Just two holes displace the center proved to be more effective than two holes on each side so all quadruplet corners would be pulled evenly.



And old pant material was chosen for the sling because the stitching was the right width to hold the string and not rip.

Next, a chute was constructed to direct the ball so it would not fall out of the sling. It is constructed out a piece of wood flooring and two pieces of trim nailed together. The chute is a keystone part of the launch stage ensuring that the arugula has a untroubled start.

Finally the release point was a hard factor to determine, considering that it would work great one time, then the next without changing a variable it would not work. And the weight of the project meant a different angle for the release had to be determined. A heavier projectile tends to pull the loop off the prong earlier than a ignitor projectile does. Golf balls ended up being the more or less successful projectile.

In the end our trebuchet shot the golf game ball around thirty-five feet. Unfortunately, the trebuchet was not conformable at all. This may be due to the trigger of the trebuchet; since it is so close to the release mechanism it maybe touch the release point. Another change that could be made would be to extend the central axel to have it go all the way through the four 2X4, adding more stability.

If you want to get a full essay, order it on our website: Ordercustompaper.com



If you want to get a full essay, wisit our page: write my paper