Tuesday 22 July 2008

designing and bulding

Designing and building an airplane Small aircraft, to one or at most two passengers, can be built at home, for airmen who have much expertise in the field of physics and aerodynamics. Other aviators with less knowledge make their planes using kits, small aircraft, with prefabricated parts, and mounting the aircraft at home. Aircraft produced in this way, however, are a minority. Because of its delicacy, planes that are built by construction companies for aircraft with the aim of the market in quantity to other customers must go through a thorough and lengthy process of planning, for security reasons imposed by the body of aviation or transportation of the country the construction company. This can last up to four years in small turbo-propellers, to 12 years in aircraft with the size of the A380. The Federal Aviation Administration, for example, requires that the wing attached to fuselage will generate six times more strength to sustain in relation to its weight (force exerted by the force of gravity on the aircraft). In the process, set up first goals of the aircraft. Once complete, the construction company uses a large number of drawings and models, all calculated in theory, estimating the behavior of the aircraft. Computers are now widely used by construction companies of aircraft as a means of design and planning of the plane. Small prototypes, or certain parts of the plane are then tested in wind tunnels, to verify the aerodynamics of the aircraft. When the plane was adopted in this process, build up a limited number of these aircraft, for its testing as a whole in the ground. Special attention is given to the engines (or turbines) and the wings. Once approved, the above procedure, the construction company is authorized by a competent organ of the general aviation and transport to make a first flight. When the behavior of the aircraft does not present suspicions of failures, the flight-test continue until the plane has completed all necessary requirements. Then, the public agency responsible for aviation and transport of the country allows the company to mass production of the aircraft. In the United States, this body is the Federal Aviation Administration (FAA) and the European Union, the Joint Aviation Authorities (JAA). These two companies are the regulations of aircraft, the world's most important. In Canada, the public agency responsible for regulatory and permit the mass production of aircraft is the Department of Transportation of Canada. In the case of international trade in aircraft, a public agency licence of the aviation and transport of the country where the aircraft is being marketed is also necessary. For example, aircraft of Airbus must be certified by the FAA to be sold in the United States and vice versa, Boeing's aircraft must be approved by the JAA to be marketed in the European Union. [edit] industrialized Production They are relatively few companies that produce aircraft on a large scale. However, the production of an aircraft by a given company is a process involving other dozens or perhaps hundreds, of other companies and factories, which produce certain shares of the aircraft. For example, a company may be responsible for the production of the undercarriage, while another is responsible for radar. The production of such pieces is not limited to a few cities in a given country, in case of large companies, manufaturação of aircraft, such parts can come from various parts of the world. Once built, the parts are sent to the factory's main airline, which is located on the production line. Different parts added up to each other at the end, producing the aircraft. In the case of large aircraft, there may be production lines dedicated especially to the assembly of large parts of the aircraft, such as wings and fuselage. When ready, a plane passes through a rigorous inspection, in search of flaws and defects, and being approved this inspection, the plane is tested by a pilot in a flight-test, to ensure that the controls of the aircraft are in order . With this final test, the plane is ready to receive the "finishing touches" (internal configuration, painting, etc.) and ready to be sent to their customers.

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