Satellite Launch Vehicle
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. Tuning Techniques Evaluation for Satellite Launch Vehicle Attitude Controllers
ABSTRACT: This communication presents a comparative analysis of tuning techniques for satellite launch vehicle attitude controllers. The investigated tuning techniques consist in the minimization of specific performance indexes, namely the Integral Absolute Error (IAE) index, the Integral of Time Multiplied Absolute Error (ITAE) index, the Integral Squared E
J. Aerosp. Technol. Manag.. Publicado em: 09/05/2019
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2. Application of a Bibliometric Tool for Studying Space Technology Trends
ABSTRACT: The statistical analysis of academic literature, also known as “bibliometrics”, is being increasingly applied to analyse research trends, to identify emerging areas of science and to find out where and how often specific articles are cited. The aim of this study was to identify technological innovation trend patterns in the aerospace sector app
J. Aerosp. Technol. Manag.. Publicado em: 15/02/2018
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3. Status and Trends of Smallsats and Their Launch Vehicles — An Up-to-date Review
ABSTRACT This paper presents an analysis of the scenario of small satellites and its correspondent launch vehicles. The miniaturization of electronics, together with reliability and performance increase as well as reduction of cost, have allowed the use of commercials-off-the-shelf in the space industry, fostering the Smallsat use. An analysis of the launche
J. Aerosp. Technol. Manag.. Publicado em: 2017-09
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4. The Use of an Atmospheric Model to Simulate the Rocket Exhaust Effluents Transport and Dispersion for the Centro de Lançamento de Alcântara
ABSTRACT: This paper introduces a new approach to represent the rocket exhaust effluents into an atmospheric dispersion model considering the trajectory and variable burning rates of a Satellite Vehicle Launcher, taking into account the buoyancy of the exhausted gases. It presents a simulation for a Satellite Vehicle Launcher flight at 12:00Z in a typical da
J. Aerosp. Technol. Manag.. Publicado em: 2017-06
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5. Multi-Disciplinary System Design Optimization of a Launch Vehicle Upper-Stage
ABSTRACT: The design method presented in this paper is related to the upper-stage system and its instrumentation, expedition and facilitation so as to transfer the satellite from the destination orbit to the target orbit. We used an integrated design method with a structure based on multidisciplinary system design optimization and developed a simple systemat
J. Aerosp. Technol. Manag.. Publicado em: 2017-03
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6. Sistema de controle de atitude para modelo de VLS fixo com 3 graus de liberdade / Attitude control system for fixed SLV model with 3 degree of freedom
O sistema de controle por alocação dos pólos com filtro foi utilizado para controlar a atitude de um modelo de veículo lançador de satélites. Com este intuito, foram confeccionados um modelo e uma base de fixação que permite a movimentação nos três graus de liberdade. Utilizando a resposta à entrada degrau em conjunto com um sistema de controle P
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/06/2012
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7. Establishment of Satellite Formation with Initial Uncertainty by Control Lyapunov Function Approach
Abstract In recent years, dynamics and control of satellite formation flying have been active areas of research. From the mission planning perspective, three main areas namely formation establishment, maintenance and reconfiguration have been discussed. In this paper, a study of formation establishment under initial uncertainty is presented. In this regard,
J. Aerosp. Technol. Manag.. Publicado em: 2012-03
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8. Experimental results of a Mach 10 conical-flow derived waverider to 14-X hypersonic aerospace vehicle
Abstract This paper presents a research in the development of the 14-X hypersonic airspace vehicle at Institute for Advanced Studies (IEAv) from Department of Science and Aerospace Technology (DCTA) of the Brazilian Air Force (FAB). The 14-X project objective is to develop a higher efficient satellite launch alternative, using a Supersonic Combustion Ramjet
J. Aerosp. Technol. Manag.. Publicado em: 2011-08
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9. Technique applied in electrical power distribution for Satellite Launch Vehicle
Abstract: The Satellite Launch Vehicle electrical network, which is currently being developed in Brazil, is sub-divided for analysis in the following parts: Service Electrical Network, Controlling Electrical Network, Safety Electrical Network and Telemetry Electrical Network. During the pre-launching and launching phases, these electrical networks are associ
J. Aerosp. Technol. Manag.. Publicado em: 2010-12
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10. Welding of AA1050 aluminum with AISI 304 stainless steel by rotary friction welding process
Abstract: The purpose of this work was to assess the development of solid state joints of dissimilar material AA1050 aluminum and AISI 304 stainless steel, which can be used in pipes of tanks of liquid propellants and other components of the Satellite Launch Vehicle. The joints were obtained by rotary friction welding process (RFW), which combines the heat g
J. Aerosp. Technol. Manag.. Publicado em: 2010-12
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11. Evaluation of the impact of convolution masks on algorithm to supervise scenery changes at space vehicle integration pads
Abstract: The Satellite Launch Vehicle developed in Brazil employs a specialized unit at the launch center known as the Movable Integration Tower. On that tower, fixed and movable work floors are installed for use by specialists, at predefined periods of time, to carry out tests mainly related to the pre-launch phase of that vehicle. Outside of those periods
J. Aerosp. Technol. Manag.. Publicado em: 2009-12
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12. Verification of the pressure equalisation inside the satellite compartment of the Brazilian satellite launch vehicle
During the atmospheric flight of the Brazilian satellite launch vehicle the pressure inside the satellite compartment should be equalised with the atmospheric pressure. This becomes necessary due to the high pressure differences which result when the vehicle reaches high altitudes with decreasing atmospheric pressures, generating high loads acting on the int
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2005-12