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Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 724
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Book Description
Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 724
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Book Description
Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 648
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 896
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Book Description
Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 896
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Book Description
Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 676
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Book Description
Author: T. A. Heppenheimer
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 364
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Book Description
Hypersonics is the study of flight at speeds where aerodynamic heating dominates the physics of the problem. Typically this is Mach 5 and higher. Hypersonics is an engineering science with close links to supersonics and engine design. Within this field, many of the most important results have been experimental. The principal facilities have been wind tunnels and related devices, which have produced flows with speeds up to orbital velocity. Why is it important? Hypersonics has had two major applications. The first has been to provide thermal protection during atmospheric entry. Success in this enterprise has supported ballistic-missile nose cones, has returned strategic reconnaissance photos from orbit and astronauts from the Moon, and has even dropped an instrument package into the atmosphere of Jupiter. The last of these approached Jupiter at four times the speed of a lunar mission returning to Earth. Work with re-entry has advanced rapidly because of its obvious importance. The second application has involved high-speed propulsion and has sought to develop the scramjet as an advanced airbreathing ramjet. Scramjets are built to run cool and thereby to achieve near-orbital speeds. They were important during the Strategic Defense Initiative, when a set of these engines was to power the experimental X-30 as a major new launch vehicle. This effort fell short, but the X-43A, carrying a scramjet, has recently flown at Mach 9.65 by using a rocket. Atmospheric entry today is fully mature as an engineering discipline. Still, the Jupiter experience shows that work with its applications continues to reach for new achievements. Studies of scramjets, by contrast, still seek full success, in which such engines can accelerate a vehicle without the use of rockets. Hence, there is much to do in this area as well. For instance, work with computers may soon show just how good scramjets can become. NASA SP-2007-4232
Author: United States. Columbia Accident Investigation Board
Publisher:
ISBN:
Category : Space shuttles
Languages : en
Pages : 252
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Book Description
Author: Khi V. Thai
Publisher: Routledge
ISBN: 1351564544
Category : Political Science
Languages : en
Pages : 384
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Book Description
Proponents of globalization argue that it protects the global environment from degradation and promotes worldwide sustainable economic growth while opponents argue the exact opposite. Examining the local, national, and international impacts of globalization, the Handbook of Globalization and the Environment explores strategies and solutions that support healthy economic growth, protect the environment, and create a more equitable world. The book sets the stage with coverage of global environmental issues and policies. It explores international sustainable development, the evolution of global warming policy, transborder air pollution, desertification, space and the global environment, and human right to water. Building on this foundation, the editors discuss global environmental organizations and institutions with coverage of the UN's role in globalization, the trade-environment nexus, the emergence of NGOs, and an analysis of the state of global environmental knowledge and awareness from an international and comparative perspective. Emphasizing the effects of increasingly integrated global economy on the environment and society, the book examines environmental management and accountability. It addresses green procurement, provides an overview of U.S. environmental regulation and the current range of voluntary and mandatory pollution prevention mechanisms in use, explores a two-pronged approach to establishing a sustainable procurement model, and examines a collaborative community-based approach to environmental regulatory compliance. The book concludes with an analysis of controversial issues, such as eco-terrorism, North-South disputes, environmental justice, the promotion of economic growth through globalization in less developed countries, and the ability of scientists to communicate ideas so that policy makers can use science in decision making.
Author: S. Turchetti
Publisher: Springer
ISBN: 1137438746
Category : Political Science
Languages : en
Pages : 514
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Book Description
Surveillance is a key notion for understanding power and control in the modern world, but it has been curiously neglected by historians of science and technology. Using the overarching concept of the "surveillance imperative," this collection of essays offers a new window on the evolution of the environmental sciences during and after the Cold War.
Author: Roger Handberg
Publisher: Bloomsbury Publishing USA
ISBN: 0313016135
Category : Science
Languages : en
Pages : 292
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Book Description
From its beginnings, NASA was convinced that its real mission was to create the opportunity for a much different and better society on Earth, namely through human space flight. Pursuit of such a goal has led the agency to persist in certain activities even when they conflict with the wishes of Congress and the President. Recent changes in the international environment, changes that began well before September 11, 2001, have brought the military back into the field of human space flight, a situation that holds certain hazards for NASA since the military is more powerful politically. Dramatic changes could be in store, changes that could severely damage NASA's capacity for continuing what it sees as its primary objective. While most analyses see the agency as riddled with incompetence, Handberg argues that NASA's troubles are a product of its internal values. He begins with an historical overview of the major themes in NASA's history, followed by chapters on specific areas of concentration, such as the space station, space transportation, space science, and internal reforms. He also discusses the long-term future of the agency and human space flight in general, both domestically and internationally.
