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		<citationkey>CostaSoScDuSoCoZo:2009:ThCoSu</citationkey>
		<title>Thermal control subsystem for the nanosatc-br – the first brazilian scientific cubesat</title>
		<year>2009</year>
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		<author>Costa, Lucas Lopes,</author>
		<author>Souza, Petrônio Noronha de,</author>
		<author>Schuch, Nelson Jorge,</author>
		<author>Durão, Otávio Santos Cupertino,</author>
		<author>Sousa, Fabiano Luis de,</author>
		<author>Costa, Rafael Lopes,</author>
		<author>Zolar, Rubens Bohrer,</author>
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		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<conferencename>International Congress of Mechanical Engineering.</conferencename>
		<conferencelocation>Gramado, RS</conferencelocation>
		<date>November, 15-10</date>
		<tertiarytype>Full Paper</tertiarytype>
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		<contenttype>External Contribution</contenttype>
		<abstract>Nowadays satellites are essential to human society mainly on communication system and science study. The NanosatC-BR  Space Weather Mission consists of an integrated program for space research and engineering development of space technologies through the integration of a CubeSat (a cubic shape satellite with 10x10x10cm and weighting no more than 1 kg of mass), the first Brazilian scientific nanosatellite. The Mission Program was conceived at the Southern Regional Space Research Center, (CRS), from the Brazilian National Institute for Space Research  INPE/MCT with the involvement of undergraduate students from the Federal University of Santa Maria  UFSM. The NanosatC-BR has the scientific objective to monitor in real time the Geospace, the disturbances observed at Earths magnetosphere over the Brazilian Territory, for the determination of its effects on regions such as the South Atlantic Magnetic Anomaly (SAMA) an the Ionosphere Equatorial Electrojet. The SAMA is of great significance to satellites and other spacecraft by the fact that the communication among satellites and to the Earth are affected by interference or loss of signal and all electronic satellites systems can be exposed to damage when the satellite pass through this anomaly. The mission requires the development of scientific instrumentation and, simultaneously, the design, manufacturing, qualification, integration and launch of the nanosatellite. The CubeSat has several subsystems that support and maintain the payload and all systems functioning. The requirement of the Thermal Control Subsystem is due to the aggressive environment faced in space, because abrupt changes in temperature occur frequently and sensitive electronic devices must be properly protected to maintain its operating temperature range within the required limits. In order to provide a design which meets the temperature requirements of the spacecraft, we must account for heat inputs from the Sun, the Earth, and electrical and electronic components onboard the spacecraft. The thermal design of small satellites like the NanosatC-BR is restricted due to their size and availability of energy, so it is used only passive controls without the consumption of electrical energy. The design must comply with the limits of temperature variation inside the satellite, with all possible variables. Dedicated computer programs are used, working with advanced numerical methods, which provide a real view of the interaction of space with the satellite and the internal heat exchanges.</abstract>
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		<language>en</language>
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