This thesis investigates the mechanisms behind the control of a typical two line kite, where the lines are attached to the kite side by side. This arrangement gives the kite flyer the ability to apply a roll angle to the kite, which then results in a yawing motion. The reason for this yaw rotation has not been adequately described previously. The definitions of roll and yaw for a kite have been re-defined to match the real world behaviour of the kite-bridle-line system. Specifically, these are defined as rotations relative to the lines rather than the kite itself. This detail has been neglected in previous research, and has a significant effect on the turning behaviour of a kite. A static model of a kite represented by flat disks was created. This model allows the out of balance forces and moments to be found for a kite when it is held at any position. When the kite is held with a roll angle applied, the disk angles of attack become unequal. This causes a change in the magnitude, direction, and point of action of the aerodynamic forces on each disk, which can lead to a yaw moment. While this does not give a complete picture of how a kite turns, it does explain one of the two mechanisms that cause a kite to begin to yaw when a roll angle is applied. The other mechanism is due to the velocity of the roll rotation, and is out of the scope of this thesis since a dynamic analysis would be required. The static model showed that any variation to kite geometry or any parameter that affects the equilibrium position of the kite will affect turning response. The most important of these parameters for a simple kite represented by two disks is the dihedral angle. A minimum negative dihedral angle (or anhedral) is required for a kite to turn in the expected direction when a roll angle is applied. The value of the minimum anhedral angle required for this behaviour varies with other parameters, but is generally between 8° and 20°. Other parameters such as bridle geometry also affect the turning response of a kite, primarily because they alter the equilibrium positions of the kite and line. Altering these equilibrium positions has a strong effect on turning response, since it changes the initial disk angles of attack. Additionally, if the kite and line are not aligned perpendicular to each other (which is a rare condition for a kite) a roll angle further changes the disk angles of attack, since the roll angle is applied about an axis relative to the line rather than the kite. An investigation into the effect of varying wind velocity on turning response showed that it has an important effect. Some kites will reverse their response to a given roll angle at some wind velocities, which could make the kite very difficult to control. Additionally, some kites can alter their equilibrium positions sharply with wind velocity, again causing varying turning behaviour as the wind conditions change. Future work should examine the dynamic turning response of kites. A dynamic simulation could be used to examine how the turning response of a kite is influenced by the rate at which a control input is applied. Additionally, the behaviour of the kite once the initial turning movement has begun could be assessed.

Esta tese trata de investigar as configurações das práticas equestres no estado do Rio Grande do Sul, no século XX. A proposição da pesquisa parte da noção de que as práticas tiveram um papel relevante para a história do Rio Grande do Sul, em particular nos campos da sociabilidade, lazer e preservação das culturas. No cenário sul-rio-grandense, a pesquisa dedica atenção ao desenvolvimento das carreiras de cancha reta, do turfe, do hipismo, do tiro de laço, do freio de ouro e da equoterapia. Tais práticas equestres foram conjecturadas por uma perspectiva socio-histórica, cuja análise foi guiada pela categoria ―configuração‖. Esta foi operacionalizada a partir da obra de Norbert Elias, conduzindo o estudo no sentido de compreender o processo de emergência, distinção e as relações de interdependência estabelecidas entre as práticas equestres no estado. A investigação assentou-se na análise de documentos escritos e impressos, os quais foram concebidos enquanto materiais e textos históricos, portadores de mensagens, sentidos e intuitos reservados à sua conjuntura. As fontes revelaram que o processo de desenvolvimento de configurações no cenário equestre sul-rio-grandense sublinhou uma reconstrução da variada e heterogênea rede de interdependências entre os domínios socializadores representados pelas corridas de cavalos, pelo hipismo, pela equoterapia e pelo tiro de laço. De igual forma, as transformações ocorridas no contexto destes domínios socializadores, ao longo do tempo, derivam das relações de interdependência entre os mesmos, nas esferas do trabalho, da cultura, do lazer, do esporte e da reabilitação. Por conseguinte, a noção de configuração entre práticas equestres pode auxiliar a compreender um campo mais amplo de interações e intercâmbios entre os esportes em geral enquanto domínios socializadores. / This thesis is to investigate the configurations of equestrian practices in the state of Rio Grande do Sul, in the twentieth century. The proposition of the research builds on the notion that the practices had a significant role in the history of Rio Grande do Sul, in particular in the fields of sociability, leisure and preservation of cultures. In the scenario of Rio Grande do Sul, the research devoted attention to the development of straight line horse races, horse racing, equestrianism, shot of lasso with horse and equine-assisted therapy. Such equestrian practices were conjectured by a sociohistorical perspective, whose analysis was guided by the category "configuration". This was operationalized from Norbert Elias work, leading the study in order to understand the process of emergence, distinction and interdependence of relations between the equestrian sports practices in the state. The research was based on the analysis of written and printed documents, which are designed as historical materials and texts, carrying messages, meanings and intentions reserved to their conjuncture. The sources revealed that a configuration development process in Rio Grande do Sul‘s equestrian scene emphasized a reconstruction of the varied and heterogeneous network of independencies between socializing areas represented by the horse racing, equestrian sports, equine-assisted therapy and shot of lasso with horse. Similarly, the changes occurred in the context of these socializing areas, over time, derived from the interrelationship between them, in the spheres of work, culture, leisure, sport and rehabilitation. Therefore, the notion of a configuration between equestrian practices can help understanding a new broader field of interactions and exchanges between the sports in general as socializing areas.

Esta tese trata de investigar as configurações das práticas equestres no estado do Rio Grande do Sul, no século XX. A proposição da pesquisa parte da noção de que as práticas tiveram um papel relevante para a história do Rio Grande do Sul, em particular nos campos da sociabilidade, lazer e preservação das culturas. No cenário sul-rio-grandense, a pesquisa dedica atenção ao desenvolvimento das carreiras de cancha reta, do turfe, do hipismo, do tiro de laço, do freio de ouro e da equoterapia. Tais práticas equestres foram conjecturadas por uma perspectiva socio-histórica, cuja análise foi guiada pela categoria ―configuração‖. Esta foi operacionalizada a partir da obra de Norbert Elias, conduzindo o estudo no sentido de compreender o processo de emergência, distinção e as relações de interdependência estabelecidas entre as práticas equestres no estado. A investigação assentou-se na análise de documentos escritos e impressos, os quais foram concebidos enquanto materiais e textos históricos, portadores de mensagens, sentidos e intuitos reservados à sua conjuntura. As fontes revelaram que o processo de desenvolvimento de configurações no cenário equestre sul-rio-grandense sublinhou uma reconstrução da variada e heterogênea rede de interdependências entre os domínios socializadores representados pelas corridas de cavalos, pelo hipismo, pela equoterapia e pelo tiro de laço. De igual forma, as transformações ocorridas no contexto destes domínios socializadores, ao longo do tempo, derivam das relações de interdependência entre os mesmos, nas esferas do trabalho, da cultura, do lazer, do esporte e da reabilitação. Por conseguinte, a noção de configuração entre práticas equestres pode auxiliar a compreender um campo mais amplo de interações e intercâmbios entre os esportes em geral enquanto domínios socializadores. / This thesis is to investigate the configurations of equestrian practices in the state of Rio Grande do Sul, in the twentieth century. The proposition of the research builds on the notion that the practices had a significant role in the history of Rio Grande do Sul, in particular in the fields of sociability, leisure and preservation of cultures. In the scenario of Rio Grande do Sul, the research devoted attention to the development of straight line horse races, horse racing, equestrianism, shot of lasso with horse and equine-assisted therapy. Such equestrian practices were conjectured by a sociohistorical perspective, whose analysis was guided by the category "configuration". This was operationalized from Norbert Elias work, leading the study in order to understand the process of emergence, distinction and interdependence of relations between the equestrian sports practices in the state. The research was based on the analysis of written and printed documents, which are designed as historical materials and texts, carrying messages, meanings and intentions reserved to their conjuncture. The sources revealed that a configuration development process in Rio Grande do Sul‘s equestrian scene emphasized a reconstruction of the varied and heterogeneous network of independencies between socializing areas represented by the horse racing, equestrian sports, equine-assisted therapy and shot of lasso with horse. Similarly, the changes occurred in the context of these socializing areas, over time, derived from the interrelationship between them, in the spheres of work, culture, leisure, sport and rehabilitation. Therefore, the notion of a configuration between equestrian practices can help understanding a new broader field of interactions and exchanges between the sports in general as socializing areas.

Esta tese trata de investigar as configurações das práticas equestres no estado do Rio Grande do Sul, no século XX. A proposição da pesquisa parte da noção de que as práticas tiveram um papel relevante para a história do Rio Grande do Sul, em particular nos campos da sociabilidade, lazer e preservação das culturas. No cenário sul-rio-grandense, a pesquisa dedica atenção ao desenvolvimento das carreiras de cancha reta, do turfe, do hipismo, do tiro de laço, do freio de ouro e da equoterapia. Tais práticas equestres foram conjecturadas por uma perspectiva socio-histórica, cuja análise foi guiada pela categoria ―configuração‖. Esta foi operacionalizada a partir da obra de Norbert Elias, conduzindo o estudo no sentido de compreender o processo de emergência, distinção e as relações de interdependência estabelecidas entre as práticas equestres no estado. A investigação assentou-se na análise de documentos escritos e impressos, os quais foram concebidos enquanto materiais e textos históricos, portadores de mensagens, sentidos e intuitos reservados à sua conjuntura. As fontes revelaram que o processo de desenvolvimento de configurações no cenário equestre sul-rio-grandense sublinhou uma reconstrução da variada e heterogênea rede de interdependências entre os domínios socializadores representados pelas corridas de cavalos, pelo hipismo, pela equoterapia e pelo tiro de laço. De igual forma, as transformações ocorridas no contexto destes domínios socializadores, ao longo do tempo, derivam das relações de interdependência entre os mesmos, nas esferas do trabalho, da cultura, do lazer, do esporte e da reabilitação. Por conseguinte, a noção de configuração entre práticas equestres pode auxiliar a compreender um campo mais amplo de interações e intercâmbios entre os esportes em geral enquanto domínios socializadores. / This thesis is to investigate the configurations of equestrian practices in the state of Rio Grande do Sul, in the twentieth century. The proposition of the research builds on the notion that the practices had a significant role in the history of Rio Grande do Sul, in particular in the fields of sociability, leisure and preservation of cultures. In the scenario of Rio Grande do Sul, the research devoted attention to the development of straight line horse races, horse racing, equestrianism, shot of lasso with horse and equine-assisted therapy. Such equestrian practices were conjectured by a sociohistorical perspective, whose analysis was guided by the category "configuration". This was operationalized from Norbert Elias work, leading the study in order to understand the process of emergence, distinction and interdependence of relations between the equestrian sports practices in the state. The research was based on the analysis of written and printed documents, which are designed as historical materials and texts, carrying messages, meanings and intentions reserved to their conjuncture. The sources revealed that a configuration development process in Rio Grande do Sul‘s equestrian scene emphasized a reconstruction of the varied and heterogeneous network of independencies between socializing areas represented by the horse racing, equestrian sports, equine-assisted therapy and shot of lasso with horse. Similarly, the changes occurred in the context of these socializing areas, over time, derived from the interrelationship between them, in the spheres of work, culture, leisure, sport and rehabilitation. Therefore, the notion of a configuration between equestrian practices can help understanding a new broader field of interactions and exchanges between the sports in general as socializing areas.