Radical aircraft and propulsion system architecture changes may be required to continue historic performance improvement rates as current civil aircraft and engine technologies mature. Significant fuel-burn savings are predicted to be achieved through the Distributed Propulsion concept, where an array of propulsors is distributed along the span of an aircraft to ingest boundary layer air and increase propulsive efficiency. Studies such as those by NASA predict large performance benefits when integrating Distributed Propulsion with the Blended Wing Body aircraft configuration, as this planform geometry is particularly suited to the ingestion of boundary layer air and the fans can be redesigned to reduce the detrimental distortion effects on performance. Additionally, a conventional aircraft with Distributed Propulsion has not been assessed in public domain literature and may also provide substantial benefits. A conceptual aircraft design code has been developed to enable the modelling of conventional and novel aircraft. A distributed fan tool has been developed to model fan performance, and a mathematical derivation was created and integrated with the fan tool to enable the boundary layer ingestion modelling. A tube & wing Distributed Propulsion aircraft with boundary layer ingestion has been compared with a current technology reference aircraft and an advanced turbofan aircraft of 2035 technology. The advanced tube & wing aircraft achieved a 27.5% fuel-burn reduction relative to the baseline aircraft and the Distributed Propulsion variant showed fuel efficiency gains of 4.1% relative to the advanced turbofan variant due to a reduced specific fuel consumption, produced through a reduction in distributed fan power requirement. The Blended Wing Body with Distributed Propulsion was compared with a turbofan variant reference aircraft and a 5.3% fuel-burn reduction was shown to be achievable through reduced core engine size and weight. The Distributed Propulsion system was shown to be particularly sensitive to inlet duct losses. Further investigation into the parametric sensitivity of the system revealed that duct loss could be mitigated by altering the mass flow and the percentage thrust produced by the distributed fans. Fuel-burn could be further reduced bydecreasing component weight and drag, through decreasing the fan and electrical system size to below that necessary for optimum power or specific fuel consumption.

Orientador: Maria da Consolação Gomes Cunha Fernandes Tavares / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Educação Fisica / Made available in DSpace on 2018-08-14T18:38:17Z (GMT). No. of bitstreams: 1 Ribeiro_PatriciaRussoLeite_M.pdf: 1049259 bytes, checksum: 3df71eea739f714d6a0e6fd0c4363834 (MD5) Previous issue date: 2009 / Resumo: Seymour Fisher, psicólogo norte americano, foi um pesquisador que durante trinta anos estudou a imagem corporal sob a perspectiva psicodinâmica. Também investigou temas como a sexualidade feminina, drogas psicoativas, placebos, teoria freudiana, entre outros. Com a exceção de O orgasmo da mulher (1973), nenhum outro livro de Fisher foi traduzido para a língua portuguesa. Foi verificado, através de buscas em bancos de dados, que na Educação Física brasileira não existe nenhuma tese nem dissertação que se refira aos achados científicos de Fisher. A falta de difusão de suas idéias pode levar não só à repetição como também à realização de pesquisas que não consideram sua teoria para uma melhor compreensão do fenômeno da imagem corporal. O objetivo desta pesquisa foi sistematizar os conhecimentos produzidos por Fisher, através de uma pesquisa bibliográfica. O levantamento bibliográfico foi feito nas bases de dados MedLine/PubMed, PsycInfo, Bireme, Scopus, Acervus, Dedalus, Athena e Google. Foram encontrados 17 livros e 209 artigos publicados por Fisher e colaboradores, bem como documentos que traziam informações da vida e da obra do autor. A partir da leitura de suas publicações sobre imagem corporal, verificou-se que suas principais contribuições teóricas foram os conceitos desenvolvidos sobre a percepção corporal e casos específicos de distorção da percepção corporal, as fronteiras corporais e a sua função de defesa, a consciência geral que o indivíduo possui sobre seu próprio corpo e a atribuição de significados a partes específicas do corpo. Fisher buscou em suas pesquisas compreender de que forma a imagem corporal interfere no comportamento humano e como o comportamento e as experiências corporais modelam a imagem corporal do indivíduo. Tratou, especialmente, das dimensões percepção corporal, fronteiras corporais e consciência corporal e as correlacionou com processos de adaptação, satisfação/insatisfação com o próprio corpo, ansiedade corporal e mecanismos de defesa, ao mesmo tempo em que considerou o papel da personalidade e da cultura na interface destas relações. Desta forma, seu intuito foi detalhar pormenorizar o complexo fenômeno da experiência corporal. O presente estudo traz contribuições importantes para o desenvolvimento das pesquisas em imagem corporal no Brasil. / Abstract: Seymour Fisher, a north-American psychologist, was a researcher that during thirty years studied body image by a psychodynamic perspective. Either investigated themes like female sexuality, drugs, placebo and Freudian theory. With the exception of his "The female orgasm", anymore books was translated to Portuguese. It was verified through data bases that in the Brazilian Physical Education, there is no these neither dissertation that refers to Fisher's findings. This failure can cause the repetition of the same research that he had realized and the development of new research that will not consider his ideas. The aim of this dissertation was to systematize the Fisher's knowledge throughout bibliographical research. The following data bases were accessed: MedLine/PubMed, PsycInfo, Bireme, Scopus, Acervus, Dedalus, Athena e Google. It was found 17 books and 209 article published by Fisher e collaborators. Also, it was found other documents that brought information about his life and carrier. The reading of their body image publications could present the concepts that he developed concerning body perception and specifics cases of distortions in body perception, body boundary and its defense function, general body awareness that one have about he own body and assignment of meaning to specific body areas. Fisher studied the way the body image interferes in the human behavior and the way the behavior and the body experience shape the body image. He treated, specifically, the body perception, the body boundaries and the body awareness dimensions. Then he correlated these dimensions with the processes of adaptation, satisfaction/dissatisfaction with own body, body anxiety and defense mechanisms, in the same way that considered the role placed by the personality and the culture in the interface of this relationship. Thus, his intent was to detail the complex phenomenon that is the body experience. The present work brings relevant and important contributions for the Brazilian body image researchers. / Mestrado / Atividade Fisica Adaptada / Mestre em Educação Física

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