High Bypass Gas Turbine Engine Coursework Example | Topics and Well Written Essays - 2000 words

High Bypass Gas Turbine Engine - Coursework Example Application of Newton’s First Law related to thrust: # If thrust and Drag are equal, the aircraft maintains a constant speed. # If thrust is increased, the speed of aircraft increases. Since drag is proportional to speed, drag also increases till it equals thrust. When drag again equals thrust, the aircraft travels at constant higher speed. Application of Newton’s Second Law related to mass flow and exit velocity: Force Mass * Acceleration F ma F=kma When SI system is used,the basic unit of force is the Newton, which is the force that will accelerate unit mass of 1 kilogram at a rate of 1 metre per second per second. Under these conditions, the constant k is unity. Therefore, F=ma F=ma=m di/dt=(m/ft) dV=d (mV)/dt =mass flow rate times change in velocity =(mv)dot Where â€Å"m dot†=Mass flow rate is the amount of mass moving through a given plane over a given period of time. Mass flow rate=r * V * A where r is the density and V is the velocity of the fluid passing through area A. This is denoted as m dot (m with a little dot over the top) m dot= r * V * A If we denote exit of the turbojet by ‘e’ and free stream by ‘0’, then we get, F= (m dot*V)e-(m dot *V)0 Thus by maintaining the exit velocity at much greater values than the velocity at intake, high thrust can be produced in turbojet engines (High Exit Velocity). Application of Newton’s Third Law related to thrust: Thrust is the reaction force developed in the forward direction by accelerating a mass of fluid or gas backwards to the rear of the engine. The turboprop propulsion system consists of a core engine and a propeller. The general principles in Application of Newton’s First Law and Third Law in Turboprop engines are the same as given in Turbojet engine. Application of Newton’s Second Law related to mass flow and exit velocity in Turbo Prop: The general thrust equation is F= (m dot*V)e-(m dot *V)0 This means that if the exit velocity is m aintained at a higher value than free stream velocity, and simultaneously, the engine flow rate (m dot) is kept as high as possible, the high engine flow will produce a high thrust in a turboprop engine. Even though a large amount of air is ingested, the change in velocity is very minimal between the intake and the exit so that the exit velocity is at a low value (Low exit velocity). Due to the large value of m dot, a high thrust is developed. Total Thrust= Thrust of Propeller Thrust of Core If we denote the free stream conditions by â€Å"0†, the propeller exit conditions by â€Å"1†, core exit conditions by â€Å"e† and core entrance conditions by â€Å"c†, then from the basic thrust equation we get: F=(m dot)0 * V1 – (m dot)0 * V0 + (m dot)e * Ve – (m dot)c * V1 In Turboprop engine, the mass flow rate through the propeller is much greater than that of core engine(High mass flow ). The mass flow rate entering the core is almost equal to th e mass flow rate exiting the core. The exit velocity from the core is almost the same as inlet velocity into the core(Low exit velocity). Hence the thrust equation can be rounded off to get: Thrust F=(m dot)0 * (V1-V0) + (m dot)e * (Ve-V1) High Bypass Gas Turbine Engine: The 5 basic modules- Along with a Detailed Description of operation of each. Inlet Components and Purpose: The intake also called the inlet serves three purposes, namely (1) recovering as much of the total pressure of the free air stream required for combustion, from free-stream conditions to the conditions and deliver this pressure to the entrance of fan or compressor.

A Brief Biography of Mark Twain Essay Example | Topics and Well Written Essays - 750 words

A Brief Biography of Mark Twain - Essay Example From this research, it is clear that despite his apparent success, Mark Twain sought higher standing and increased wealth, especially as it concerned the eastern states. After a brief correspondence and engagement, Twain married Olivia Langdon of New York in 1870. He lived with Olivia in Buffalo from 1869 to 1871, during which time tragedy once again struck Twain, as their first born son Langdon died of diphtheria at two years of age. They would go on to have three daughters, two of which who would also die under tragic circumstances at a relatively young age (before 30). In 1976 Twain published the masterful The Adventures of Tom Sawyer, demonstrating that he had not lost touch with his Missouri roots despite his risen status and wealth. Between this time and the time he published Adventures of Huckleberry Finn (1884), Twain appeared his high-browed associated with tales such as The Prince and the Pauper in 1881. Sadly, the last fifteen to twenty years of Twain’s life were extremely troubled. He faced financial ruin from bad investments and a failed publication house (Kirk 29) and suffered from depression from the time of his daughter Susy’s death of meningitis in 1896 until his death in 1910. Twain’s death occurred 6 years after the passing of his wife Olivia while he was lecturing abroad (Cox 10). At the time of his passing Twain was considered a national treasure and he would go on to be credited by throngs of professionals as the father of American literature.

Company report Essay Example | Topics and Well Written Essays - 2500 words

Company report - Essay Example From manufacturing and installation of modern orbit presses till the repair, maintenance and troubleshooting of the presses as well. The Sizer is the innovation body of pellet manufacturing presses. The pellet manufacturing operations of the Sizer Ltd is competing with rivals, where the challenges are more enough to survive in industry. 1. Remit The boundary of this study is confined under management and financial factors to analyze. We will initially focus on the factors of SWOT analysis of the Sizer Ltd and the industrial factors facing by the firm. The Sizer Ltd dealing with two dimensions, first consists on the pellet manufacturing and supplying operations where the number of competitors are large whereas the Sizer is facilitating in three different large markets of the world. Next operation of this firm based on the engineering and technical support division, which provides the pellets manufacturing presses. In pellets presses industry, the Sizer is the global leader which innov ate this technology in mid-nineties. 2. Background of Sizer Ltd History of Sizer Ltd consists on the combination of engineering innovation as well as the quality manufacturing of pellets. A British pioneer engineer established Sizer Ltd in 1899 in Hull, England. The first ever pallet manufacturing press was designed by the Albert Sizer, son of Sizer’s founder with the name and style of Cuber. ... The basic robust designs rapidly improve to meet the market requirements of quality efficiency and the cost effectiveness and become the familiar Orbit Pellet Press. Simultaneously, Sizer providing the wide range of pallet presses and the spare parts with technical supports which includes the maintenance and installation of presses. The most selling press of Sizer, Orbit presses is the most efficient more for manufacturing of pallets, the main characteristics of Orbit is easy for installation and adaptable for bespoke applications. This use in diverse industries like manufacturing of animal feed, charcoal briquetting, biomass, malting and flour millings. It has capacity from 200kg / hour to 10000kg / hour range availability which depends on material and type of manufacturing. Year 2008, the industry of pellet producing was sacrificing for the impacts of recession, which shows in Figure 2 that lower quantity of pellet manufacturing stoves sold and installed whereas, only boilers sold out by the Sizer because of barrier of new entry in industry but the only capacity enhancement through the boilers. (See Figure 2) 3. Method and Tool of Analysis We choose the SWOT as best analysis tool to identify the strength, weaknesses, threads and weaknesses of Sizer Ltd and the competitors as well. SWOT Analysis is the more frequently and easily understandable tool to identify the international factors of the firms which exhibit all the internal and external factors to understand the current position of the firm and the market or industry, furthermore, it helps to create the strategies of future to more stabilize the firm and achieve the organizational goals by capturing the

EATING AND WEIGHT DISORDERS Essay Example | Topics and Well Written Essays - 500 words

EATING AND WEIGHT DISORDERS - Essay Example Obesity, a medical problem in its own right, can result from bingeing and poor food choices. Bulimics binge and then purge (get rid of food by vomiting, taking laxatives, or exercising excessively). Anorexics starve themselves, sometimes to the point of death. A disturbance in a person’s thoughts, here one actually fears gaining weight. This would mean an avoidance of regular eating just to remain slim, even sometimes when the subject is so thin that the health is at stake. The subject takes up self-starvation methods. 90 percent of most cases are reported in females, although there are cases of this nature in males yet most of them go unnoticed. It is most common among whites or in societies where there is a high demand on thin ladies or were the only qualification of beauty is seen as being thin. Also in careers that requires for one to be thin, dancing, fashion industry, theater , show business. Patients with anorexia could be spotted trying to hide or cover themselves by wearing baggy and heavy clothes although not so easily, however a well trained psychiatrist or doctor would straightforwardly diagnose the illness. The America Psychiatric Association classified it as a distinct disorder in 1980, Bulimia nervosa could result from patients with anorexia, in this case it does not matter if you are overweight or underweight, patients result in bingeing (large intake of low calorie foods within a short time interval). It is not a known cause of weight loss but it does result in gastrointestinal

Retail giant in the world Essay Example | Topics and Well Written Essays - 1000 words

Retail giant in the world - Essay Example The company has received a host of prestigeous accolades including being named as the â€Å"Retailer of the Century† by Discount Store News and being awarded the Ron Brown Award for outstanding entrepreneurial leadership. â€Å"In 2002, Wal-Mart became No. 1 on the FORTUNE 500 list and in 2003 and 2004, Wal-Mart was named "Most Admired Company in America" by FORTUNE magazine† (â€Å"At A Glance† 4). The Wal-Mart’s history dates back to 1945, when Sam Walton opened the 1st retail outlet in Newport, Akansas with a capital of US$ 20,000. This initial outlet operates a franchise outlet of Butler Brothers chain. Subsequently three more outlets were opened under franchise agreements and profit sharing practices were introduced with his managers, which largely contributed to the rapid growth of the business. Encouraged by the success of his retail business, Sam Walton opened the first true Wal-Mart in 1962 in Rogers Akansas. Expanding the number of outlets based on the success of the initial outlet, Sam Walton replicated the winning formula to grow the Wal-Mart Chain. The company was incorperated as Wal-Mart Stores, Inc.in 1969. It was first listed on the New York Stock Exchange in year 1972. In year 1990 the company becomes the largest retailer in USA. Its foreign operations start in 1991 with a store in Mexico city. Since then the company has grown locally and intenationally with a host of strategic acquisitions such as the Woolco- canda, ASDA-UK and Amigo- Pueterico.

Does Punishment Deter Crime Essay Example | Topics and Well Written Essays - 1250 words

Does Punishment Deter Crime - Essay Example ed as a justified step to make the criminal realize his act of omission and offense that is committed and also as an attempt to give justice to the person or people against whom it has been committed. The changing paradigms of the emerging new pluralistic society have necessitated the need to study the wider implications of punishment for the various types of crimes that are becoming a regular feature of the American society. The punishments which were supposed to serve as examples for others to refrain from crimes are increasingly becoming ineffectual. Hence, in the recent times, crime and punishment have become the most controversial issues and crucial public policy questions, especially in America. Punishment for crimes has primarily been implemented for four major reasons: retribution; deterrence; rehabilitation; and social protection. These four factors are significant motivators for effectively combating crimes against the society and serve as vital public policy decisions while disbursing justice. Criminal justice has seen tremendous changes in the level of punishment and politicians, academicians and social scientists have vastly differed in the use or misuse of the official machinery and the justice system that decides and awards the punishment. The one most vital point that has come through the various public debates is the long term sustainability of the wider objectives of the punishment; whether the punishment has served as effective deterrent? Retribution refers to the concept that the criminal deserves punishment. The adage ‘tit for tat’ or ‘eye for an eye’ becomes the main objective of the punishment. Crime has been committed and therefore the criminal must be paid back in the same manner or something which is as bad as his crime. In the modern times and in the civilized society, this act of vengeance is neither considered to be morally right or just because it would bring our action at par with that of criminal. Hence, our actions need to

Corporate Responsibility and Marketing Strategies Essay Example for Free

Corporate Responsibility and Marketing Strategies Essay Apple corporation bases its success on â€Å"creating innovative, high quality products and services and on demonstrating integrity in every business interaction.† According to Apple, four main principles contribute to integrity: honesty, respect, confidentiality, and compliance. To more thoroughly detail these principles, Apple has drafted a code of business conduct that applies to all its operations, including operations overseas. Apple disappointed socially responsible investors. Apple has come under fire since around 2006 as details emerged surrounding the workplace environment at Apples Chinese suppliers. An article in The New York Times publicized unsatisfactory worker conditions, which included grueling 24-hour shifts, overcrowded dorms, exposure to toxic chemicals, and horrific explosions. Foxconn Technology Group operates many of the plants in question in Chengdu, China. When it comes to customers, Apple is said to be a bold innovator that leads the industry into new directions and forces others to follow. However, when it comes to the management of its supply chain and treatment of workers in the Chinese factories that make its products, Apple hides behind the constraints of prevailing industry practices. What is even more disconcerting is the fact that these practices are in violation of not only local and national laws, but also of Apples own voluntary self-imposed code of conduct. Most of Apples worker-related problems were focused on Apples manufacturing partner Foxconn and its subsidiaries. Apples China operations first caught international attention in June 2006 with a long story in Britains Mail on Sunday.1 This was followed by a series of similar stories in other leading international news media, and has continued to this day.2 Because of Foxconns secrecy, it is well-nigh impossible to develop an accurate assessment of the problems in the factories owned and operated by Foxconn and its various subsidiaries. However, a brief description of extreme conditions prevailing in these factories and widely reported in the  media gave the readers some indication of the enormity of the problems that likely to existed in those plants. Apple has audited many of its suppliers and found violations of its Supplier Code of Conduct, but requesting its suppliers improve working conditions is not as powerful as changing suppliers to ones with more humane conditions. Part of the problem is that Apple has no legal liability for what happens in Chinese factories owned by separate manufacturers. Environmental organization Greenpeace had frequently campaigned against Apple, requesting elimination of non-recyclable hardware components, the removal of toxins from iPhone hardware, and a comprehensive take-back plan to prevent Apple products from ending up as waste. Greenpeace also began a protest in 2003 against Apples use of toxic PVC plastics and brominated flame retardants, or BFRs, in Apple’s products. Apple eliminated these chemicals in 2008, becoming the first laptop maker to do so (Corporate Responsibility Spotlight: Apple, September 14, 2012.) Workers assembling iPhones, iPads and other devices often labor in harsh conditions, according to employees inside China’s plants, worker advocates and documents published by companies themselves. Problems are as varied as onerous work environments and serious — sometimes deadly — safety problems. Under-age workers have helped build Apple’s products, and the company’s suppliers have improperly disposed of hazardous waste and falsified records, according to company reports and advocacy groups that, within China, are often considered reliable, independent monitors. The suppliers demonstrated disregard for workers health. In 2010, 137 workers at an Apple supplier in eastern China were injured after the workers were said to have been ordered to use a poisonous chemical to clean iPhone screens. In 2009 two explosions at iPad factories, including in Chengdu, killed four people and injured 77. Before those blasts, Apple had been alerted to hazardous conditions inside the Chengdu plant, according to a Chinese group that published that warning (Duhigg, Charles and Barboza, David. In China, Human Costs Are Built Into an iPad, (The NewYork Times) January 25, 2 010.) The publications outlining the ethics and social responsibility violations of Apple caused more consumers to actually start to wonder where and how Apple products are manufactured. Consumers have focused on Apples remarkable products rather than how they are produced. The New York Times story on iPad working conditions, for example, generated 1,770 reader comments. Many, if not most, blasted Apple  or the overall system of cheap labor. And an online petition prompted by the This American Life piece that called for Apple to protect Chinese workers had garnered roughly 166,000 signatures—and counting. I determined that Apple’s customers would be willing to pay more for its products if Apple had to increase selling prices in order to provide better wages and benefits for suppliers’ workers. Apple seems to make people crazy, described as a cult because it has such a vociferous following.† The Secrecy Strategy† (Moltz, John., Why Apple Drives People Crazy. Macworld. Feb2013, Vol. 30 Issue 2, p100-100. 1p). Stock-market and financial analysts are known to always have had a hard time understanding Apple because Apple does not sell commodity products or chase market share at the cost of everything else. Its modus operand i is: Enter a market, stake out the high end, and scoop up all the profit. As copycats such as Samsung flood the low end, Apple continued to hold the high end by evolving and differentiating products, while looking for new markets. One key approach used is to never telegraph punches; that way, no would know which market would be remade next. Hence Apples famous veil of secrecy, which further frustrated analysts. The bottom line was that the appeal of Apples products and its business strategies were said to be inscrutable, which made the company a Rorschach test. People saw what they wanted to see, and the idea that Apples fortunes are plummeting is more appealing to many than the idea that it might continue to ride high. The appeal of Apples products and its business strategies are believed to be both inscrutable. Apple joined the FLA in 2012 following intense public attention over allegations of widespread problems at Foxconn, China’s largest private employer. The FLA said both Apple and Foxconn â€Å"have agreed to ongoing assessments by FLA in order to ensure that labor practices meet FLA standards and remain in compliance for the long term.† Current and former Apple executives, moreover, say the company had made significant strides in improving factories in recent years. Apple has a supplier code of conduct that details standards on labor issues, safety protections and other topics. The company has mounted a vigorous auditing campaign, and when abuses are discovered, Apple says, corrections are demanded. And Apple’s annual supplier responsibility reports, in many cases, are the first to report abuses. This month, for the first time, the company released a list identifying many of its suppliers. Apple has continued to be aggressive in  calling out suppliers who dont meet up to its code of conduct. In January, Apple said it had fired Pingzhou Electronics after it was found to be hiring underage workers. Apples Supplier Code of Conduct sets the minimum age for workers at 15. (Apples Labor Practices In China Scrutinized After Foxconn, Pegatron Reviews. Forbes.com. 12/12/2013, p2-2. 1p. 1 Chart). What made Steve different from other marketers, is that he understood that his job as a marketer was not to focus on making money or sales, and, unlike other marketers, Steve’s marketing skills was seem in the way he presented his products: Here are some of the quotes that reflect Steve’s focus in business: If it could save a person’s life, could you find a way to save ten seconds off the boot time? You‘ve got to start with the customer experience and work back toward—not the other way around. Being the richest man in the cemetery doesn’t matter to me. Going to bed at night saying that they had done something wonderful is what mattered to Steve. Steve made the marketing process simple; if he gave people what they want, educated them on why they needed it, showed them how it will improve their lives, and why no other competitor’s products could compete with the convenience and ease of use of yours, customers would be willing to spend. References Apples Labor Practices In China scrutinized after Foxconn, pegatron reviews. Forbes.com. 12/12/2013, p2-2. 1p. 1 Chart. Apple’s Marketing Strategy – Sell On Value, Not Price. Retrieved from http://www.chrisnosal.com/apples-marketing-strategy-sell-products-on-value-not-price/ (Duhigg, Charles and Barboza, David.( January 25, 2010). In China, human costs are built into an iPad, (The NewYork Times). Frauenheim, Ed. February 6, 2012. Bad Apple: Could the era of exploitation outsourcing be near its end? Retrieved from http://www.workforce.com/blogs/2-work-in-progress/post/bad-apple-could-the-era-of-exploitation-outsourcing-be-near-its-end) Kannel, Charlie, The Motley Fool (September 14, 2012) Corporate responsibility spotlight: Apple. (Daily Finance). Ira Kalb, Marshall School of Business, USC . (September 13, 2013) Apples Cheap iPhone might not be that affordable, but it does protect the brand (Business Insider). Retrieved from