Mathematical Analysis of Space Radiator Segmenting for Increased Reliability and Reduced Mass PDF Download
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Author:
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Category :
Languages : en
Pages : 16
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Author:
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Category :
Languages : en
Pages : 16
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Author: Mohamed S. El-Genk
Publisher: American Institute of Physics
ISBN:
Category : Science
Languages : en
Pages : 1208
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As the British, French and Spanish Atlantic empires were torn apart in the Age of Revolution, Portugal steadily pursued reforms to tie its American, African and European territories more closely together. Eventually, after a period of revival and prosperity, the Luso-Brazilian world also succumbed to revolution, which ultimately resulted in Brazil's independence from Portugal. The first of its kind in the English language to examine the Portuguese Atlantic World in the period from 1750 to 1850, this book reveals that despite formal separation, the links and relationships that survived the demise of empire entwined the historical trajectories of Portugal and Brazil even more deeply. From constitutionalism to economic policy to the problem of slavery, Portuguese and Brazilian statesmen and political writers laboured under the long shadow of empire as they sought to begin anew and forge stable post-imperial orders on both sides of the Atlantic.
Author: American Institute of Physics
Publisher: American Institute of Physics
ISBN:
Category : Science
Languages : en
Pages : 1292
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Albuquerque, New Mexico, 8-11 February 2004
Author:
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Category : Aeronautics
Languages : en
Pages : 704
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Author: Bernard Fox
Publisher: RAND Corporation
ISBN:
Category : History
Languages : en
Pages : 268
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Book Description
1. Introduction / 2. Space system fundamentals / 3. Reviewing a cost estimate / 4. Space vehicle cost crosschecks / 5. Common issues in estimating space programs / 6. Resources for space system cost estimation / 7. Recommendations.
Author:
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Category : Astronautics
Languages : en
Pages : 28
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Category : Automobiles
Languages : en
Pages : 664
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Author:
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ISBN:
Category : Space stations
Languages : en
Pages : 652
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Author: National Research Council
Publisher: National Academies Press
ISBN: 0309183707
Category : Science
Languages : en
Pages : 104
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Remote observations of Earth from space serve an extraordinarily broad range of purposes, resulting in extraordinary demands on those at the National Aeronautics and Space Administration (NASA), the National Oceanic and Atmospheric Administration (NOAA), and elsewhere who must decide how to execute them. In research, Earth observations promise large volumes of data to a variety of disciplines with differing needs for measurement type, simultaneity, continuity, and long-term instrument stability. Operational needs, such as weather forecasting, add a distinct set of requirements for continual and highly reliable monitoring of global conditions. The Role of Small Satellites in NASA and NOAA Earth Observation Programs confronts these diverse requirements and assesses how they might be met by small satellites. In the past, the preferred architecture for most NASA and NOAA missions was a single large spacecraft platform containing a sophisticated suite of instruments. But the recognition in other areas of space research that cost-effectiveness, flexibility, and robustness may be enhanced by using small spacecraft has raised questions about this philosophy of Earth observation. For example, NASA has already abandoned its original plan for a follow-on series of major platforms in its Earth Observing System. This study finds that small spacecraft can play an important role in Earth observation programs, providing to this field some of the expected benefits that are normally associated with such programs, such as rapid development and lower individual mission cost. It also identifies some of the programmatic and technical challenges associated with a mission composed of small spacecraft, as well as reasons why more traditional, larger platforms might still be preferred. The reasonable conclusion is that a systems-level examination is required to determine the optimum architecture for a given scientific and/or operational objective. The implied new challenge is for NASA and NOAA to find intra- and interagency planning mechanisms that can achieve the most appropriate and cost-effective balance among their various requirements.
Author:
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ISBN:
Category : Large space structures (Astronautics)
Languages : en
Pages : 1042
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