Quadrotor Helicopter

Question: Describe about the Quadrotor Helicopter? Answer: Introduction A quadcopter or a quadrotor helicopter is a helicopter with multiple rotors, which uses four rotors or motors to perform the upliftment operation. The four rotors attached to it are used to propel the quadcopter. Quadcopter has two fixed pitched propellers, which are identical: two anticlockwise and two clockwise. They are used to control torque and lift by varying the RPM of the rotors. In this project, a quadcopter has been designed, and its hardware has been implemented. The report describes the designing and development part in details. The materials used has also been discussed in the report. The quadcopter so developed, is a working model and take a successful flight. Quadcopter finds a variety of applications in various fields. Some of them are: Research Uses: Where it is used to study the aerodynamics and physics behind it. Military Use: It is used in the military for surveillance and reconnaissance. They are commonly referred to as drones here. They can perform great tasks as they are unmanned. Commercial Use: Their commercial use is on a boom in todays world. They are used for HD photography, for video coverage of events, delivery system to remote locations etc. Many more uses are planned in recent future. Implementation Main Design and Working The rotors of the quadcopter are used to produce thrust. Torque is also produced by them, which is about the centre of rotation. The drag force produced is opposite to the direction of light of the quadcopter. Fig. Torque on each motor on the quadcopter If all rotors are spinning at the same angular velocity, with motors 1 and 3 rotating clockwise and rotors 2 and 4 counter clockwise, the net aerodynamic torque, and hence the angular acceleration about the yaw axis, is exactly zero, which implies that the yaw stabilizing rotor of conventional helicopters is not needed. Yaw is induced by mismatching the balance in aerodynamic torques (i.e., by offsetting the cumulative thrust commands between the counter-rotating blade pairs). Materials Used The main materials needed for building a quadcopter are: propellers, frame, and motors/rotors. In our project, we have used a hybrid combination of plastic and wooden frame. The frame have been crafted out from a sheet of light weight wood, and have been designed according to the need. The propellers are made of plastic, and are of fixed pitch. They are durable and good for the project. Very high RPM brushless DC motors have been used in the project as rotors. The battery is also a very important component needed in the project. The battery used in our project is a Li-Po battery, which is rechargeable. The image of all the components and their assembly has been attached in the Appendix of this project. Result The quadcopter has been designed and implemented on the hardware successfully. The quadcopter takes the flight like it should, and can be manually controlled. It has a microcontroller embedded in it, and it can be programmed to work on its own. The battery once charged can be used to fly the quadcopter for about 15 minutes. Better battery can be used to make it fly for longer durations. The flight dynamics and flying can be controlled by controlling the rotors, as described above. Evaluation A very light weight material has to be used for the quadcopter frame. We have used a combination of plastic and wood. But instead, if we used the whole body made of light weight plastic, it would have been lighter. The se of carbon fibre material is also recommended. It is a very light material, and hence, perfect for the small quadcopter project. It is also very sturdy and can be used to carry weights with the quadcopter as payload. These weight can be camera or GPS devices, or such instruments, if we wish to extend the project further and make it more useable. The use of better battery is also recommended. Through, the battery should be always Lithium ion polymer battery, as it can provide a steady current for a longer duration of time. If the battery has more mAh rating, it could provide current for longer duration, and hence, the quadcopter could take longer duration flights. Also, if we wish to extend the project by integrating other peripherals like camera or GPS device to the quadcopter, a better battery would be needed to power such a device too. The quadcopter can be made wireless by using and integrating a wireless device with it, like Wi-Fi device or a Bluetooth device. Most popular device used with quadcopter are ZeegBee, which are should distance wireless devices. They can be easily integrated and programmed with our project. The project doesnt require any special maintenance. Though, the battery, if not taken proper care of, can become useless after some time. So, it should be properly turned off and disconnect after every use. The charging and discharging cycle should also be kept in mind. Conclusion The quadcopter has become a very important field of research and development. It has been expected to take over many important activities like delivery system, and extensive use in defence. In this project, we have successfully developed and implemented the hardware of a quadcopter. The functionalities of the developed project is: it can take a flight, change direction, change altitude, rotate.

Muhammad Ali Essays - Boxing, Sports, English-language Films

Muhammad Ali Muhammad Ali, originally Cassius Marcellus Clay, in his lifetime became one of the best and most controversial sports figures of all time. His upfront attitude and devotion to the Muslim religion made him a role model for many people. Perhaps the most surprising thing he did was changing is name to Muhammad Ali after becoming a Muslim. Ali, then still going by Cassius Clay, first came to world attention in 1960, when he won the Olympic light-heavyweight championship. After his surprising victory over then heavyweight champion Sonny Liston in 1964, he produced a steady stream of headlines. He was the first boxer to benefit from international television, making him all the more visible to the world. In his second fight with Liston, more controversy arose over the way Liston went down and stayed down in the initial round. Ali, however, proved to be a "fighting champion," accepting the challenges of every heavyweight he had a chance to fight. He was stripped of his title in 1967 for refusing military service on religious grounds during the Vietnam War. He claimed, "If going to war, and possible dying, would help twenty-two million blacks in this country gain freedom, justice and equality, I would join tomorrow." He also said that he would not help kill poor people in other countries when it is happening to his own people in America. He was allowed to resume fighting in 1970 and had his appeal of conviction upheld by the U.S. Supreme Court in 1971. Ali regained the championship in a 1974 bout with George Foreman. He lost the crown again in 1978 to Leon Spinks but regained it the same year, thus becoming the first man to win the title three times. Other than Joe Frazier and Spinks, the only boxers to defeat Ali, who had a 55-5 record, were Ken Norton, who later lost to Ali; Larry Holmes, who foiled Ali's try for a fourth heavyweight championship; and Trevor Berbick, who defeated Ali after a failed attempt to make a comeback. After his fight against Berbick, he announced his retirement.

Diluting the Bucket List

Diluting the Bucket List Diluting the Bucket List Diluting the Bucket List By Maeve Maddox The idiom â€Å"to kick the bucket,† meaning â€Å"to die,† has been used in English since the eighteenth century. The term â€Å"bucket list† makes its earliest appearance on the Ngram Viewer in 1962, forty-five years before it was popularized by the movie The Bucket List (2007). A â€Å"bucket list† is a list of things that a person hopes to experience or achieve before dying. In the movie, a character played by Morgan Freeman is diagnosed with lung cancer and makes such a list. Less than a decade has passed since the movie popularized the term, and already it has dwindled into a mere synonym for â€Å"to-do list.† A â€Å"to-do list† is a list of tasks that need to be completed during a period of time. A typical daily to-do list might look like this: 1. cut grass 2. pick up cleaning 3. take cat to vet 4. play basketball 5. renew library book An advertising campaign called â€Å"Summer Bucket List† alerted me to the fact that the term â€Å"bucket list† is being used as a synonym for â€Å"to-do list.† The ads show people drinking beer and engaging in ordinary summer activities. The â€Å"bucket list† in the context of the ads is simply a list of outdoor activities to be fitted into one’s schedule before the end of summer. The same day I saw one of the â€Å"summer bucket list† ads, I watched a rerun of Bones (television crime series) and heard two characters discuss goals to be achieved before the age of thirty as â€Å"a bucket list.† I suppose this use could be argued as being metaphoric: â€Å"life after thirty equals death.† Here are some examples in which â€Å"bucket list† seems to be overkill: But dont let high school pass you by- be sure to make the most of your last days before college by creating your own senior year bucket list full of things you want to do or accomplish by graduation day. - Huffington Post. Back when my hubby and I first got married almost 7 years ago, we had some fairly standard items on our â€Å"before baby† bucket list.  - Maternity advice blog. To help you take these last months [of college] by storm, we’ve compiled the ultimate bucket list of things you’ve been meaning to do since freshman year. - MTV site. Write yourself a marriage bucket list to ensure that you and your spouse’s first year together is one full of fun, love and laughter!- Wedding advice site. It was inevitable that â€Å"bucket list† would morph into â€Å"list of things to be done before a particular event- not necessarily dying- takes place.† To me, the use of â€Å"bucket list† in such contexts sounds creepy, especially when the terminal event is something joyous, like the birth of a baby. Related post: â€Å"Pushing Up Daisies† and Other Euphemisms for Death Want to improve your English in five minutes a day? Get a subscription and start receiving our writing tips and exercises daily! Keep learning! Browse the Expressions category, check our popular posts, or choose a related post below:Dialogue Dos and Don'ts5 Brainstorming Strategies for Writers40 Idioms with First

How to Conjugate Utiliser (to Use) in French

How to Conjugate Utiliser (to Use) in French In French, the verb  utiliser  means to use. This is pretty easy to remember because it looks and sounds like the English word utilize. French students will be happy to know that the conjugations are almost as easy. Thats because its a regular verb, so transforming  utiliser  into the French for using or used follows a very common rule. This lesson will explain everything you need to know. The Basic Conjugations of  Utiliser French verb conjugations are a bit of a challenge because you have to memorize a new verb for every tense as well as every subject pronoun within that tense. This gives you five extra words to study, but  utiliser  is a  regular -er verb. It uses the same infinitive endings as the majority of French verbs, making each new one easier to memorize. The indicative mood is where we find the basic present, future, and imperfect past tenses. These should be your top priority when studying  utiliser. Using the stem (or radical)  utilis-  and the chart, match the subject pronoun to the appropriate tense to find the proper ending. For instance, I am using is  jutilise  and we will use is  nous utiliserons. If you practice these in context using short sentences it will help you learn them faster. Luckily,  utiliser  is such a useful word that youll have endless opportunities to use it. Present Future Imperfect j utilise utiliserai utilisais tu utilises utiliseras utilisais il utilise utilisera utilisait nous utilisons utiliserons utilisions vous utilisez utiliserez utilisiez ils utilisent utiliseront utilisaient The Present Participle of Utiliser The  present participle  of  utiliser  is  utilisant. This was created by simply adding -ant  to the verb stem. Thats another rule you can keep in mind that works for almost every verb ending in -er. Utiliser  in the Compound Past Tense When it comes to the past tense, you have the choice between the imperfect or a compound known as the passà © composà ©. This one requires a quick construction using the auxiliary verb avoir and the past participle utilisà ©. When forming the passà © composà ©, conjugate  avoir  into the present tense appropriate to the subject. Then, attach the past participle, which indicates the act of using already happened. For example, I used is  jai utilisà ©Ã‚  and we used is  nous avons utilisà ©. More Simple Conjugations of Utiliser Among the other useful and equally simple conjugations of  utiliser  that you may need are  the subjunctive  and  the conditional. Where the subjunctive questions that the action will take place, the conditional says that its dependent on something else. While its not a bad idea to add the  the passà © simple  or  imperfect subjunctive  to your vocabulary, its often not a necessity. These are used only on occasion, but you should be able to at least recognize each as a form of  utiliser. Subjunctive Conditional Pass Simple Imperfect Subjunctive j utilise utiliserais utilisai utilisasse tu utilises utiliserais utilisas utilisasses il utilise utiliserait utilisa utilist nous utilisions utiliserions utilismes utilisassions vous utilisiez utiliseriez utilistes utilisassiez ils utilisent utiliseraient utilisrent utilisassent The one conjugation that does not require the subject pronoun is the imperative. For this, you can simplify your sentence from tu utilise to utilise. Imperative (tu) utilise (nous) utilisons (vous) utilisez

International Marketing Plan for Allianz Case Study

International Marketing Plan for Allianz - Case Study Example The company has acquired about 60 million customers to whom it provides property and casualty insurance services, health insurance, life insurance asset management and banking services. Allianz started to go international in the late 19th century when the company opened a branch office in London. Allianz now also has branches in Paris, Italy, Great Britain, Netherlands, Brazil, Spain, and USA. Allianz hopes to expand into Eastern Europe and establish branches either in Hungary or turkey. Since international marketing plans revolve around certain factors, the company will have to complete a thorough analysis of the countries in question, so as to determine the feasibility and viability of international services in these countries. This report will also discuss the viability of establishing branches in the Turkish or Hungarian market place. The Company is aiming to establish the organization in a global market. In order to do this an effective international marketing plan would have to be developed. The goal of this international marketing plan is the provision of specific directions for the company's marketing activities. Research will be carried out in various areas like segmentation, marketing, pricing strategy, targeting and positioning, promotional strategy, control and implementation, in order to achieve set goals. This marketing plan will also detail what the company can achieve with such an international marketing strategy and hoe this plan will help in realizing company objectives. When an organization has decided that it is beneficial to go international and start operations in another country, "it is necessary to define company policies on international marketing and the company's objectives for creating promotional campaigns that are efficient. As long as Allianz continues to offer superior services that are efficient, then the company will be better than a domestic company. As the global market continues to grow bigger and population increase continues, the company must engage in effective international marketing, in order to acquire and maintain more clients." (An in depth analysis of Insurance Industry) Interest in Hungary and Turkey Numerous variables function within an international company such as this, which deals in a global market. These variables can influence the company's strategy either directly or indirectly. Being well implanted in various parts of the world Allianz seeks to invest other markets in Europe. Marketing strategy At Allianz, the goal of business is the acquisition of clients and maintaining these clients as customers. The company's international marketing strategy should reflect this, as the company continues to build its reputation. The strategies that would be used for this international marketing will be a push/promotional strategy and pull/selling strategy. The push/promotional strategy will use the company's trade promotion activities and sales force to create consumer demand internationally. The pull/selling strategy involves expenses on promotions for consumers and advertising in order to build up consumer demand for services SWOT analysis The sections highlighted below constitute the most relevant issues for Allianz, and the success of the company. Strengths The company's strengths include: a brand new international approach, staff

Globalisation and Business Essay Example | Topics and Well Written Essays - 3250 words

Globalisation and Business - Essay Example 2. Debates on Economic Globalisation Before going in-depth of the debatable issues of economic globalisation with respect to reduction of poverty, it is essential to recognise the entities that act as the prime contributors towards economic globalisation. The multinational corporations (MNCs) are perhaps the most significant transporter of economic globalisation. The MNCs operate with the organisation of production process and allocation of resources as per the various standards for maximising profits. The globalisation in financial sector also plays an important role towards influencing economic globalisation all around the world. One of the reasons for the formulation of debate over effectiveness of economic globalisation is the fact that the structures of the various industries undergo radical up-gradation and re-adjustment as a consequence of the economic globalisation (Shangquan, 2000). According to the proponents’ views towards the prospect of economic globalisation in t he sphere of reducing poverty, the relatively poor economies had undergone tremendous changes after the economic globalisation evolved. For example, in India, since the year 1975, the rate of poverty has declined sharply along with the decrement in inequality. In countries like India, the supporters of economic globalisation consider the process as an entirely benevolent one indicating the long desired delivery of the concept of humanity from economic underdevelopment, despair and backwardness. The proponents to the concept of economic globalisation are of the notion that the process would operate for the betterment of the human beings within a country wherever poverty exists. This would be achieved because the allowance to market forces would keep the trading away... The paper tells that the multinational corporations (MNCs) are perhaps the most significant transporter of economic globalisation. The MNCs operate with the organisation of production process and allocation of resources as per the various standards for maximising profits. The globalisation in financial sector also plays an important role towards influencing economic globalisation all around the world. One of the reasons for the formulation of debate over effectiveness of economic globalisation is the fact that the structures of the various industries undergo radical up-gradation and re-adjustment as a consequence of the economic globalisation. According to the proponents’ views towards the prospect of economic globalisation in the sphere of reducing poverty, the relatively poor economies had undergone tremendous changes after the economic globalisation evolved. For example, in India, since the year 1975, the rate of poverty has declined sharply along with the decrement in ineq uality. In countries like India, the supporters of economic globalisation consider the process as an entirely benevolent one indicating the long desired delivery of the concept of humanity from economic underdevelopment, despair and backwardness. The proponents to the concept of economic globalisation are of the notion that the process would operate for the betterment of the human beings within a country wherever poverty exists. This would be achieved because the allowance to market forces would keep the trading away from the political issues of the country and would bring about greater growth of the economy and thus for its native as well.

How Aztec Culture Survived Essay Example for Free

How Aztec Culture Survived Essay Aztec refers to Nahuatl speaking people from the central region of Mexico. There are other groups who are related to this community; they include the Acolhua and the Tepanic. This essay analyses the history of the Aztec people, their culture and how they survived the Spaniard conquest. The Aztecs were located in the south central region of Mexico. They lived in Mesoamerica highlands in the area of basins which are separated by dissected mountain ranges and eroded volcanic peaks. The Aztecs originated from the remote north at around the early 13th century. They were moving around the valley of Mexico in their struggle of survival. Their experiences went to the extent of Aztecs being enslaved by another tribe. They stopped their migratory pattern in 1325 when they settled on the south west of Lake Texaco. This was after they saw an eagle sitting on a pricking pear stem. To the community, this was an omen which announced the location where they should settle and make their city (Msdu. du, 2010, Par 1-4). In part of their culture, the Aztecs maintained their activities of fishing, hunting, garden techniques, and gathering. The rivers in the valley were rich in fish, shrimp, insects, tadpoles, and pasta. There were those who settled near the ocean and they ate crabs, fish, turtles, and fish. This means that water was the main source of their livelihoods. They hunted animals such a rabbits, armadillos, snakes, pumas, coyotes, and deer. In addition, they hunted the wild turkey. The community gathered crops such as cocoa, bananas, pumpkins, squash, beans, tobacco, chili, onions, green tomatoes, red tomatoes, sweet potatoes, maize, and vanilla. Later, they began warring with other tribes and they conquered them. The Aztecs allowed the tribes that they conquered to maintain their government and religion but the tribes were supposed to provide the Aztecs with textiles, food, pottery, and other items that they required (Native Web, 1995, Par 2-4). The Aztec people spoke Nahauatl Language but did not have a written language. They however had no written records. Instead, they used varieties of hieroglyphic paintings and the methods of direct representation as ways of keeping their records. The first contact of the Aztec empire with the Spanish conquest was during the reign of Ahuitzotl from 1486 to1502. The Spaniards and their allies became very dangerous to the people of Aztec. Hostilities developed, leading to the massacre of the Aztec main temple and the death of their leader, Montezuma II. On July 1, the Spaniards fled the town, leading to an episode which they referred to as The Sad Night. The Aztec society was helped by the native allies to fight the Spaniards and in August 13, the battle ended. They conquered but due to the poor leadership that prevailed, the falling of the empire was witnessed. Despite the empire’s declination, their culture still remained intact. This led to positive development of the Aztec culture because the Spaniard presence did not affect their way of life. Today, many traditional groups of Mexican Americans can trace their origin from the time of Aztec tradition. They are well known today for human sacrifices. During the special events, a slave was sacrificed to honor the gods and to regulate the human existence (Anguilar-Moreno 131). In conclusion, I found out that Nahuatl language which is the traditional language for the Aztec is being spoken by 1. 5 million people. In Mexico City, most of the buildings and streets have Nahuatl names. This means that the Aztec old days are still respected up to now.