Scientific and Technical Aerospace Reports PDF Download
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 992
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 992
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Book Description
Author:
Publisher:
ISBN:
Category : Solar energy
Languages : en
Pages : 688
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Book Description
Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 754
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Book Description
Author: Argonne National Laboratory. Energy and Environmental Systems Division
Publisher:
ISBN:
Category : Pollution
Languages : en
Pages : 92
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Book Description
Author: United States. Satellite Power System Project Office
Publisher:
ISBN:
Category : Satellite power systems
Languages : en
Pages : 220
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Book Description
Author: Jules Aarons
Publisher:
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Category : Ionosphere
Languages : en
Pages : 252
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Book Description
Author:
Publisher: DIANE Publishing
ISBN: 1428924574
Category :
Languages : en
Pages : 297
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Book Description
During energy crisis at the end of the Sixties, a new idea to exploit solar energy arose: Solar Power Satellites. These satellites need a huge surface to collect enough solar energy to be beamed on Earth by means of a microwave power transfer system. Different concepts appeared during last forty years and a lot of studies addressing the SPS economical feasibility have been published. In this work a particular concept is considered, the JAXA Reference Concept 2003. It is a formation flying SPS, composed by two reflectors and a central array panel. The objective of the work is to study two major problems this concept presents. Due to its dimensions, the satellite orbit will suffer from important orbital perturbations and since formation flying satellites need a tight orbit control, the first task is to derive an analytical approximation to perform relative perturbed orbit propagation for formation flying satellite. This objective is pursued starting from a H. Schaub’s formulation in which formation flying satellites unperturbed orbit is described by means of an approximated relation function of orbital element differences. This formulation is merged with another approach, developed in a previous work, which gives, analytically, orbital parameters variation when a perturbation acts on the spacecraft. The result is a very interesting algorithm, able to perform the assigned task with a relative error lower than 3% over one simulated orbit. The second objective concerns structural control. It is not possible to consider these huge satellites as rigid bodies, first natural frequencies will be certainly excited during operations. So that, the second task is the study of actuator placement optimization for flexible satellites, very useful for tight pointing requirements. A FEM model is developed modeling the SPS as a frame of beams and a global controllability index is obtained combining modal controllability and component cost analysis. The maximization of this parameter,
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 862
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Book Description
Author: Argonne National Laboratory. Energy and Environmental Systems Division
Publisher:
ISBN:
Category : Environmental protection
Languages : en
Pages : 112
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Book Description
Author: Peter Auer
Publisher: Academic Press
ISBN: 1483191265
Category : Technology & Engineering
Languages : en
Pages : 281
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Book Description
Advances in Energy Systems and Technology, Volume 2, is intended to furnish a detailed and critical review of timely topics within the general field of energy. The breadth of coverage is greater than that generally found in journal review articles. Thus, the collection of chapters contained within this serial will serve as a valuable reference work for an extended period of time. The book contains four chapters and opens with a discussion of the development of solar power satellites. This is followed by separate chapters on sea thermal power; the direct use of solar energy; and the rationale, structure, and use of models for energy technology assessment. This volume aims to continue attracting a wide audience, consisting of professional workers in the field, serious students at the graduate or advanced undergraduate level, as well as those policy analysts and energy planners who seek a more complete understanding of technical matters.
