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This essential book describes the mathematical formulations and subsequent computer simulations required to accurately project the trajectory of spacecraft and rockets in space, using the formalism of optimal control for minimum-time transfer in general elliptic orbit. The material will aid research students in aerospace engineering, as well as practitioners in the field of spaceflight dynamics, in developing simulation software to carry out trade studies useful in vehicle and mission design. It will teach readers to develop flight software for operational applications in autonomous mode, so to actually transfer space vehicles from one orbit to another. The practical, real-life applications discussed will give readers a clear understanding of the mathematics of orbit transfer, allow them to develop their own operational software to fly missions, and to use the contents as a research tool to carry out even more complex analyses.
Orbital transfer (Space flight) --- Trajectory optimization. --- Space trajectories.
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Artillery --- Trajectories (Mechanics) --- Python (Computer program language) --- Computer simulation.
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Airspace. --- Automatic control. --- UAS traffic management. --- Decision support systems. --- Trajectories.
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Artillery --- Trajectories (Mechanics) --- Python (Computer program language) --- Computer simulation.
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Space trajectories --- Mathematical optimization. --- Statistical methods. --- Optimization (Mathematics) --- Optimization techniques --- Optimization theory --- Systems optimization --- Mathematical analysis --- Maxima and minima --- Operations research --- Simulation methods --- System analysis --- Space vehicles --- Astrodynamics --- Space flight --- Trajectories (Mechanics) --- Trajectories
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This essential book describes the mathematical formulations and subsequent computer simulations required to accurately project the trajectory of spacecraft and rockets in space, using the formalism of optimal control for minimum-time transfer in general elliptic orbit. The material will aid research students in aerospace engineering, as well as practitioners in the field of spaceflight dynamics, in developing simulation software to carry out trade studies useful in vehicle and mission design. It will teach readers to develop flight software for operational applications in autonomous mode, so to actually transfer space vehicles from one orbit to another. The practical, real-life applications discussed will give readers a clear understanding of the mathematics of orbit transfer, allow them to develop their own operational software to fly missions, and to use the contents as a research tool to carry out even more complex analyses. [Publisher]
Orbital transfer (Space flight) --- Trajectory optimization. --- Space trajectories. --- Astrodynamics --- Transfert orbital (vol spatial) --- Trajectoires spatiales. --- Astrodynamique.
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This book uses the entire flying process, starting from ground launching of the orbital transfer vehicle (OTV) to injecting payload into earth synchronous orbit, as an example for real-world engineering practices. It discusses in detail the analysis design and integrated OTV navigation and guidance system technologies in combination with the engineering experiences of the authors in analysis, design and integrated OTV navigation and guidance system applications, and the research on navigation and guidance theories. It focuses on establishing motion of air vehicle equations, control system hardware components, orbit prediction technology, inertial navigation and initial alignment technologies, INS/GNSS integrated navigation technologies, INS/CNS integrated navigation technologies, redundant fault tolerance and failure reconfiguration technology of inertial sensors, guidance and midcourse correction technologies and orbit control strategies. The book is a valuable reference book for the engineers, technicians and researchers who are engaged in analysis, design and integrated application of OTV navigation and guidance control systems. It can also be used as teaching material for postgraduates and senior undergraduates majoring in OTV navigation and guidance systems and other related subjects.
Engineering. --- Aerospace engineering. --- Astronautics. --- Control engineering. --- Robotics. --- Mechatronics. --- Aerospace Technology and Astronautics. --- Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics). --- Control, Robotics, Mechatronics. --- Space vehicles --- Orbital transfer (Space flight) --- Guidance systems. --- Control systems. --- Guidance systems (Flight) --- Orbit transfer (Space flight) --- Transfer orbits (Space flight) --- Transfer trajectories --- Space flight --- Space trajectories --- Flight control --- Electronic equipment --- Astrophysics. --- Astronomical physics --- Astronomy --- Cosmic physics --- Physics --- Space sciences --- Aeronautics --- Astrodynamics --- Space sciences. --- Automation --- Machine theory --- Control engineering --- Control equipment --- Control theory --- Engineering instruments --- Programmable controllers --- Science and space --- Space research --- Cosmology --- Science --- Mechanical engineering --- Microelectronics --- Microelectromechanical systems --- Aeronautical engineering --- Astronautics --- Engineering
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Using second language (L2) socialization theory as a theoretical framework, this book investigates the ways in which four advanced learners of Japanese on an immersion program in the USA exercise their agency to pursue their language learning goals. The work presents their learner portraits and documents the different ways in which the four learners negotiate the meaning of their participations in the new community of practice, navigate and shape the trajectories of their learning and eventually achieve their goals of learning from their emic perspectives. The book re-examines Norton’s (2000) constructs of investment, investigates its applicability and argues that L2 learners’ desires and drives for learning an L2 are more diverse, unique and contextually situated than Norton’s notion of investment alone can explain. The research will be of interest to researchers and students in the fields of applied linguistics, second language acquisition, foreign language education and language and literacy education.
Community of practice. --- Ethnographic studies. --- L2 Japanese learning. --- L2 learner agency. --- L2 learner variability. --- L2 learners of Japanese. --- L2 socialization theory. --- L2 socialization. --- Middlebury Language Schools. --- Norton’s (2000) notion of investment. --- Second language socialization. --- language learner agency. --- language learner trajectories. --- narrative inquiry. --- stories of L2 learners. --- LANGUAGE ARTS & DISCIPLINES / Linguistics / Psycholinguistics.
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