Aircraft Maintenance
Mostrando 13-20 de 20 artigos, teses e dissertações.
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13. Hydraulic actuator failure prognostics.
This work presents an application of failure prognosis in the system command actuator of a commercial aircraft. An efficient failure prognostic algorithm provides a reduction in the number of unscheduled events and consequently generates a significant reduction in the maintenance costs. Although this is a simulation-based work, it presents a pre validation w
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/04/2007
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14. Aplicação da metodologia DFMA - Design for Manufacturing and Assembly - no projeto e fabricação de aeronaves / Application of DFMA - Design for Manufacturing and Assembly - methodology on aircrafts design and manufacturing
Brazilian aeronautical industry has been developed faster and faster in terms of technology development and manufacturing processes. Thus, it has been planning to reach better results during the aircraft development and manufacturing phases, aiming to better evaluation of manufacturing processes, assembly, maintenance, capability and human factors (ergonomic
Publicado em: 2007
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15. Avaliação da condição de " tão bom quanto novo":: uma aplicação envolvendo a manutenção de motores convencionais das aeronaves Universal T-5"
After a usual preventive maintenance routine it is usually assumed that a system returns to the condition of As Good As New" (AGAN). This work uses some statistical tools to propose a methodology able to test if a system returns to the Condition of AGAN and, in the cases in which the supposition cannot be validated, to determine a coefficient reliable to mea
Publicado em: 2006
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16. ANÁLISE DE CONFIABILIDADE NA MANUTENÇÃO DE COMPONENTE MECÂNICO DE AVIAÇÃO / RELIABILITY ANALYSIS ON MAINTANANCE OF AIRCRAFT MECHANICAL COMPONENT
Considering the actual technology available, an issue became crucial: to determine for how much time a critical device will be capable to perform, without failures, its function. When the operation of this device inlays a raised risk, as it occurs in aviation, reliability is distinguished of the others dimensions of the quality, therefore the occurrence of f
Publicado em: 2005
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17. Work stress and quality of Life of the aircraft maintenance personnel from a Brazilian military institution. / Estresse ocupacional e qualidade de vida em trabalhadores de manutenção de aeronaves de uma instituição militar brasileira
Inexistem estudos similares na literatura nacional e internacional avaliando Estresse Ocupacional e Qualidade de Vida de trabalhadores de manutenção de aeronaves. Essa atividade exige um alto nível de competência, não admite erros e demanda uma importante carga física e mental de trabalho (DAC, 1996; FAA, 2002). Dentre os riscos ocupacionais inerentes
Publicado em: 2005
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18. "Metodologias para geração e atualização de mosaicos de fotos aéreas no Projeto ARARA" / Methodologies for generation and updating of aerial photographs mosaics in the ARARA Project
The generation of photographic mosaics is an important activity in many areas such as map production, environment monitoring and agricultural management. Photogrammetry, and specially aero-photogrammetry, are the sciences that deal, among other subjects, with mosaic generation using time consuming procedures, making the maintenance and updating of photograph
Publicado em: 2004
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19. Retrospective cohort mortality study of workers at an aircraft maintenance facility. I. Epidemiological results.
A retrospective cohort study of 14,457 workers at an aircraft maintenance facility was undertaken to evaluate mortality associated with exposures in their workplace. The purpose was to determine whether working with solvents, particularly trichloroethylene, posed any excess risk of mortality. The study group consisted of all civilian employees who worked for
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20. Retrospective cohort mortality study of workers at an aircraft maintenance facility. II. Exposures and their assessment.
Methods are presented that were used for assessing exposures in a cohort mortality study of 15,000 employees who held 150,000 jobs at an Air Force base from 1939 to 1982. Standardisation of the word order and spelling of the job titles identified 43,000 unique job title organisation combinations. Walkthrough surveys were conducted, long term employees were i