Aerodynamics Assignment Example | Topics and Well Written Essays - 1250 words

Aerodynamics - Assignment Example depicts that if the attack angle is large enough the wing oscillates until a critical angle is exceeded beyond,which the lee-side wing will experience vortex lift off caused by asymmetric flow conditions (Lewis, pp.145-213). Large undamping causes a rapid build-up of wing-rock amplitude until a damping action is caused by the vortex breakdown on the windward wing, which lowers the net damping until it reaches zeroIt limits the cycle oscillations observed and predicted by lattice vortex methods. Bearing friction is overcome without the undamping generated from vortex lift off due to the increased wing area that increases the vortex-induced rolling moment. Predictions of unsteady induced drag are important in flexible aircraft dynamics and flapping applications in which the aerodynamics forces plays a crucial role. The suction force due to the leading edge balances the steady case components of pressure force in a free-stream direction. Moreover, within an unsteady case thrust or drag might develop depending on the details provided in the case. Vortex-lattice method requires inclusion of singularities and resolves the average aerodynamic surface for the unsteady force component given in Bernoullis equation The VLM attempts to predict the behavior of various components of the plane to the data obtained in a wind tunnel. This method produces data that is in agreement with the data for the neutral point location, lift and moment curve slopes at Mach 0.2. When studying the effects of canard using VLM it when the canard is above the wing then the neutral point is independent of the canard height. Moreover, when the canard is below the wing then neutral point varies with the canard height. The effects of the number of panels range from 120 to 240 panels and ought to be provided in order to obtain converged results.VLM has the best results when many span-wise stations are employed in conjunction with a relatively low number of chord-wise panels. The use of VLM in

Environment and famiy dynamics Essay Example | Topics and Well Written Essays - 250 words

Environment and famiy dynamics - Essay Example With respect to what factors constitute an environment, a simpler analysis would be to conclude that any and all outside forces that help to shape the development of the family should be considered the environment. With such an all inclusive meaning, it is readily understood that the environment has a profound effect on familial development as a function of the fact that it encompasses so many diverse factors. Likewise, familial communication is one of the most central mechanisms through which a family can hope to discuss, analyze, and work to ameliorate negative environmental factors. Without open communication within the unit, the environment itself becomes the determinant factor towards shaping the overall functionality/disfunctionality of the given family unit. In this way, the communication mechanism works to regulate the way in which the familial unit works to alleviate environmental pressures that exist upon

Cave Essay Example | Topics and Well Written Essays - 1000 words

Cave - Essay Example The cave reveals that such people are trapped in the cave of confusion and misunderstanding. The Shadows symbolize the perceptions of people who believe that what we see in the world increases knowledge. When one believes that what he sees should be justified as truth then this happens to be the shadow of truth. The game illustrates how people believe that one individual can be a master. The escape prisoner symbolizes the philosopher who finds knowledge outside his senses and the cave. His intellectual journey revolves finding wisdom and truth. The return represents a different prisoner who desires to find philosophical truth. This essay seeks to discuss how we can use Plato’s allegory to understand what Ishmael Beah went through in his experiences in Sierra Leone’s war. In brief, the story of Ishmael Beah reveals a child’s journey through tribulations. At a tender age, Ishmael life was affected by the outbreak of the civil war. His parents and siblings died and left him in the world that was cruel and brutal. Soon after his family’s death, the young boy was recruited as a child soldier. In his assigned duties, Ishmael ensured that many people understood the devastating impacts of war on young children in his country Iran. Ishmael won a competition in his country for creating insights on the effects of war in Iran. In his life, the young boy spoke confidently about his experiences that eventually captivated many people’s attention on the aspect of child soldiering and the effect of war on children (Plato10). Ishmael spoke on different occasions on behalf of the Human Rights Watch and UNICEF. He created a strong ground for many people to promote children rights and end war since its effect cannot be underestimated. The story of Ishmael is of hope and redemption in that it revealed his passion in humanity. Now that we have discussed the meaning of the Allegory cave, let us now discuss how the Plato’s allegory helps us und erstand what Ishmael Beah went through in his experiences in Sierra Leone’s war. Ishmael Beah is like the prisoner described in the allegory in that he represents the dreamer who seeks knowledge outside of the senses and the cave (Beah 19). As previously mentioned, Ishmael’s journey represented a philosopher's journey of finding wisdom and truth. In a Long Way Gone, Ishmael Beah narrates a riveting story that reveals his different realities before, during, and after his time as a soldier. Before being a soldier, the government army accused Ishmael of being capable of committing terrible acts. At this point, one would argue that the boy was in the cave of misunderstanding. The world around him was dark and filled with torments and pain. As argued by Plato (10), the people in the cave cannot air their thoughts since they can only see life as illusion. However, in the outer world there is light that makes an individual to identify everything that is happening around him. Based on this argument, one would argue that the young boy was inside the cave after the death of his parents and siblings. He could not comprehend why the world was so much cruel to the extent of killing his family members. During his time as a soldier, the young boy was in the outer world of the cave where everything was visible. He gradually began to identify everything that was happening around him and he realized that he was living in the real world. He

BAT concept Essay Example | Topics and Well Written Essays - 1500 words

BAT concept - Essay Example 'Permitted processes have to show that they have applied the best available technique (BAT) approach when applying for an IPPC permit'. Considering this statement, a critical evaluation will be done in this paper on the ways pollution is regulated in England and Wales and whether or not BAT should be applied. BAT is seen to be the most effective way of controlling and reducing the emission of hazardous pollutants into the atmosphere. Following points will throw light on the purpose of BAT (Scottish Executive, 2006) & (EC, 2003). A relevant example is of petrochemical company in South England .The requirement was to use butadiene from pure butenes for its down-stream processes knowing the fact that butadiene is a pollutant. Since it was a major requirement, they extracted butadiene from butenes using cuprous ammonium acetate. In doing so, 200 tones of ammonia and 140 tones of volatile organic compounds (VOCs) were emitted in air. 300 tones of ammonia and 6 tones of copper ran into the systems purifying water (Slater, D.). Since these amounts were disturbing, the company decided to replace the butene extraction process with a new process named 'Catalytic Hydrogenation Process' which had zero emissions to air during the reduction of butadiene to butene. The results after changing the procedures showed that annually, only 7 tones of VOCs were released in air from valves of the system and less than 1 kilogram of hydrocarbons were released to water (Slater, D.). Another company owned by an American manufacturer of fluorescent tubes had to shift to a cleaner process in order to minimize emissions of VOCs in air. The tubes, coated with phosphor, lost 500 tones of xylene in air. It took 30 years for the company to design and implement a cleaner process that would reduce the environmental risks. A water-based carrier system was installed in the UK factory. As s result, only 1.25 tones of ammonia were lost in air annually (Slater, D.). Pollution Regulation in England and Wales In 2008, a consultation plan on 'The Pollution Inventory 2009-2011' for pollution regulation in England and Wales was passed by the Environmental Agency aiming to improve environmental conditions in UK (EA, 2008). The aim of Pollution Inventory (PI) is to reduce all the sources of pollution caused by the industrial activities by (EA, 2008): Warning the industrialists about the pollution caused from industrial activities so that they realise the responsibility of being a good citizen and encouraging them to apply and use environmental- friendly procedures in installing and operating industries. Supporting common people to gain information about pollution caused