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Flight Test Evaluation of a Hi-Speed Near Real-Time 720I Image Processing ApplicationGuarino de Vasconcelos, Luiz Eduardo, Leite, Nelson Paiva Oliveira, Pinheiro, Carlos Alberto Murari, Carpinteiro, Otávio Augusto Salgado 10 1900 (has links)
ITC/USA 2011 Conference Proceedings / The Forty-Seventh Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2011 / Bally's Las Vegas, Las Vegas, Nevada / Nowadays, with the development of the electronics, a video camera can produce hi-resolution and hi-speed images with a very good sensitivity. A typical application is the execution of the Air Data System (ADS) Calibration Flight Test Campaign (FTC) using the Tower-Fly-By method, where the aircraft reference altitude is computed from video frames. To improve efficiency, safety and effectiveness for this FTC, the Flight Test Research Institute (IPEV) developed a near real-time video processing application to compute the aircraft altitude from 720i video frames at up to 400 fps. This development was executed as Master Science dissertation along with Itajubá State University (UNIFEI). Tests results demonstrated satisfactory performance for this tool compared to Ground Telemetry System (GTS) and Global Positioning System (GPS).
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Fast On-Board Tracking System for External Stores SeparationLeite, Nelson Paiva Oliveira, Guarino de Vasconcelos, Luiz Eduardo, Kusomoto, André Yoshimi 10 1900 (has links)
ITC/USA 2013 Conference Proceedings / The Forty-Ninth Annual International Telemetering Conference and Technical Exhibition / October 21-24, 2013 / Bally's Hotel & Convention Center, Las Vegas, NV / External stores separation campaign is very risky therefore its preparation presents a big technical challenge for the instrumentation group. Determination of store trajectory requires the integration of two hi-speed hi-resolution video cameras into FTI. Link bandwidth precludes the development of a real-time application to be used at the Ground Telemetry System (GTS) for separation validation. To improve efficiency IPEV, with FINEP funding, is developing a system where the separation trajectory is computed on-board and in real-time. Computed parameters are merged into FTI to be processed into GTS and compared to the estimated trajectory. The proposed architecture is presented and discussed.
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Optimización y análisis de comportamiento de sistemas de sujeción para vías de ferrocarril de alta velocidad españolaCarrascal Vaquero, Isidro Alfonso 06 October 2006 (has links)
Los nuevos ferrocarriles de Alta Velocidad Española (AVE) suponen, respecto a su predecesor, la línea Madrid-Sevilla, un incremento en la velocidad máxima, pasando de los 280-300 km/h de la línea original a los 350 km/h que se pretende alcanzar en los nuevos trazados. Este incremento de velocidad origina mayores solicitaciones que afectan a la superestructura de la vía y, por ello, se hace necesario un redimensionado de todos los parámetros de diseño del trazado. Entre los componentes de la superestructura se encuentra el sistema de sujeción. Este sistema está constituido por un conjunto de pequeños elementos de vía que fijan el carril a la traviesa dando continuidad estructural a la vía. El sistema de sujeción cobra mayor importancia debido a este incremento de los esfuerzos originado por el aumento de las velocidades, convirtiéndose en un elemento clave de la superestructura de vía. Esta Tesis, pretende, en primer lugar, encontrar el sistema óptimo de sujeción que se adapte a las exigencias establecidas por la administración en el "Pliego de bases para el suministro de sujeciones" para ferrocarriles de alta velocidad. En segundo lugar, una vez definido el sistema, analizar el comportamiento de la sujeción, tanto desde el punto de vista individual de cada componente, como desde el punto de vista global. Este análisis incluye la totalidad de propiedades importantes del sistema, desde las mecánicas, ya sean estáticas o dinámicas, hasta las eléctricas, pasando, entre otras, por las de durabilidad y deterioro. También, se estudiarán las posibles variaciones sufridas por estas propiedades en función de parámetros externos, como pueden ser los de carácter ambiental, e internos propios del sistema de sujeción. / The new Spanish High Speed Railways (AVE) involve, regarding its predecessor, Madrid-Seville line, an increase in the maximum speed, going from 280-300 km / h of the original line to 350 km / h that expects in the new routes. This speedup produces greater efforts that affect the superstructure of the track and, therefore, resizing of all design parameters of the track is required. The fastening system is among the components of the superstructure. This system is made up of a set of small track pieces that fasten the rail to the sleeper giving structural continuity to the track. The fastening system is becoming more important because of this greater efforts caused by the increased speeds, becoming a key element of the track superstructure. The aim of this thesis is, first, to find the optimum fastening system that well suits the requirements set by the administration in the "Terms for the supply of fasteners" for high speed railways. Secondly, this thesis, once the system has defined; analyzes the behaviour of the fastening, both from the point of view of individual component, and from a global perspective. This analysis includes all the important properties of the system, from the mechanical properties, whether static or dynamic, to the electrical properties, besides the hardness and deterioration. Also, the possible changes undergone for these properties depending of external parameters, such as the environmental measure, and own internal parameters of the fastening system were studied.
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