Tom Sawyer Essays (1656 words) - Picaresque Novels,

Tom Sawyer Tom Sawyer Tom Sawyer is a boy who is full of adventures. In his world there is an adventure around every corner. Some of his adventures have lead him into some bad situations but with his good heart and bright mind he has gotten out of them. Tom lives with his aunt Polly, his cousin Mary and his bother Sid. One of the first things to happen in the book is a memorable one, the painting of the fence. Tom's aunt Polly made Tom paint her fence on a Saturday as a punishment. Tom just hated the idea of having to work on a Saturday while all of the neighborhood could make fun of and harass him. After Tom tried to trade some of his possessions for a few hours of freedom he had a stroke of genius, instead of him paying people to work for him, he made people pay him to paint. Tom managed this by telling people that it isn't every day that you get a chance to paint a fence and he thought it was fun. He had people begging him to paint by the time that he was finished his story. He would have taken every boy in the town's wealth if he had not run out of paint. On June 17th about the hour of midnight, Tom and his best friend Huck were out in the grave yard trying to get rid of warts, when they witnessed a murder by Injun Joe. At the time Muff Potter was drunk and asleep so Injun Joe blamed the murder him (Muff Potter). They knew if crazy Injun Joe found out they knew, he would for sure kill them. Tom wrote on a wooden board "Huck Finn and Tom Sawyer swear to keep mum about this and they wish they may drop down dead in their tracks if they ever tell and rot", then in their own blood they signed their initials TS and HF. A few days after that incident Tom, Huck and Joe decided to go and become pirates because no one cared for their company anymore. They stole some food and supplies and then they stole a raft and paddled to an island in the middle of the Mississippi River. They stayed and pirated for several days, then they all became so home sick that they could not bear it anymore. The next day Tom, Huck, and Joe showed up for their own funerals and there was much thanks and praise. The next big event in the town was the trial of Muff Potter for the murder in the graveyard. The whole town believed Injun Joe, and poor Muff was sent to a temporary jail cell for a week. At the end of the week he was to be hung unless some one in court had proved him innocent. While Muff was in jail temporarily he was not alone. Every day Tom and Huck would go and talk to him through the jail cell bars and on occasion bring him food. On the last day of court, to everyone's surprise they called Tom Sawyer to the stand. Then the man asked him where he was on the 17th of June he said "In the graveyard". Then when he asked who he saw do it he said with all his courage he said "Muff didn't do it. It was Injun Joe!" and with that Injun Joe jumped out the window and ran away. Tom and Huck decided that they wanted to become rich so they went to go and find buried treasure. Tom and Huck dug under trees all day and night but found nothing, then Tom said that they should go and dig for treasure in a haunted house. They went back two days later and went to a haunted house. Both the boys were scared but they both went inside anyway. The boys dared each other to go upstairs, so of course they went up and looked in closets for treasure but found nothing. Suddenly the boys heard two men talking and then come inside. Both of the boys got down on the floor and then they heard the voice again, it was Injun Joe. Injun Joe and the other man had a bag of money and decided to bury it there. Tom and Huck could hardly contain themselves because they would steal it as soon as Injun Joe left. Injun Joe was digging a hole with his knife when he hit something, it was a box of money.

The Architecture of a Propeller

The Architecture of a Propeller On the surface, a propeller seems like a simple device. Once you learn to measure some common prop dimensions and ponder the nearly limitless combinations of these variables you see that it is very complex. Then at some point, after much studying, you will attain prop enlightenment and the propeller will become simple again. There are no promises of prop enlightenment or other engineering magic here, just some basic terms and measurements to help you see how a prop interacts with the rest of the vessel and the elements. With this knowledge, you will be able to determine prop performance characteristics. Architecture of a Propeller Hub – This is the central portion of the prop that fits onto the prop shaft. It is a hollow cylinder where the bases of the blades are attached.Blades – These are the large, flat pieces that radiate out from the hub. This is what pushes the water making the boat move forward.Root – This is where the blade attaches to the hub.Leading Edge - This refers to the edge of a blade that is moving into the water.Trailing Edge – This is the edge of a blade that is opposite the leading edge.Blade Face – The wide part of the blade, often divided into fore and aft faces. Propeller Variables Diameter – The diameter of a prop is the distance across the propeller. If you are viewing a prop from the rear of a boat and imagine the prop making a solid circle as it spins the diameter will be the distance across that circle. To measure this dimension measure one blade from the center of the hub to the tip of the blade then double that number to get the diameter. Pitch – This measurement is the mystery for many people but the definition is very simple. The pitch of a prop tells us the maximum distance a propeller will move a vessel forward through the water. Take note of the word maximum in this description. Pitch is often referred to as a theoretical measurement because no prop operates at one hundred percent efficiency. The laws of fluid dynamics tell us that there is a significant loss of power at the prop which can be as much as one-third of maximum efficiency. This means that a prop with a pitch of 21 inches will only move a boat forward fourteen inches in the real world. To measure pitch, you need to take several measurements. These measurements are going to be much more accurate if you have the prop off the shaft and can lay it flat on a table. Don’t worry if you need to do this while it is still attached to the vessel, it will be slightly less accurate but this is not a precision engineering measurement. First, find the widest part of one blade and draw a line across the face from edge to edge. Then measure the distance from the front of the hub to the points where your line meets each edge of the blade. You can do this best while viewing the prop from the side. Take the smaller measurement and subtract it from the larger. Next use a protractor, angle gauge, or carpentry square to measure the triangle formed by the two points at either end of the line drawn across the widest part of the propeller blade and the center of the hub. The narrow, pointy end should be at the center of the hub. Measure the angle between the two lines radiating out from the center of the hub. Now take the first measurement and multiply it by 360. Then take the result and divide it by the angle you found in the second measurement. The resulting number is the pitch of the prop. For example, a prop that has a three-inch difference between the leading and trailing edge at the center of a blade and has a thirty-degree angle between the leading edge and the trailing edge of the blade will have a pitch of ​36 inches. This is calculated as; 3 x 360 / 30 36. There are also inexpensive prop gauges available but where is the fun in that approach. Rake – Rake is the angle between the cylinder that forms the hub and an imaginary line from the blade root to the tip of the blade. This is best measured with a protractor or angle gauge since the measurement will be a fairly small number. Prop Markings The easiest way to find prop diameter and pitch is to read the markings stamped or cast into the hub. These are two numbers separated by a dash. The first number is the diameter and the second is the pitch.