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Author: National Research Council Publisher: National Academies Press ISBN: 0309253624 Category : Science Languages : en Pages : 376
Book Description
NASA's Office of the Chief Technologist (OCT) has begun to rebuild the advanced space technology program in the agency with plans laid out in 14 draft technology roadmaps. It has been years since NASA has had a vigorous, broad-based program in advanced space technology development and its technology base has been largely depleted. However, success in executing future NASA space missions will depend on advanced technology developments that should already be underway. Reaching out to involve the external technical community, the National Research Council (NRC) considered the 14 draft technology roadmaps prepared by OCT and ranked the top technical challenges and highest priority technologies that NASA should emphasize in the next 5 years. This report provides specific guidance and recommendations on how the effectiveness of the technology development program managed by OCT can be enhanced in the face of scarce resources.
Author: Michael Simpson Ph D Publisher: Createspace Independent Publishing Platform ISBN: 9781532784422 Category : Languages : en Pages : 448
Book Description
FOREWORD By Bruce McCandless II Former NASA Astronaut This volume is the fifth in the series on contemporary space topics by the Aerospace Technology Working Group with support from Secure World Foundation, the International Space University, and the International Institute of Space Commerce. It deals principally with the topic of sustainability of space operations. In all fields of challenging endeavor actually accomplishing an objective (e.g., putting a satellite into orbit) comes first, followed by exploitation or commercialization, and lastly by a realization that the resource is finite. Such "finite-ness" may come from considerations of pollution (e.g., space debris, propulsion effluent) or of actual limitations on the availability of the resource (e.g., crowding of Geostationary Earth Orbit - GEO). Both of these topics are among those discussed in detail in this volume. Developing countries, in particular, may find such considerations too burdensome, and this begs the need for regulation to avoid the classic "Tragedy of the Commons" situation. In the case of orbital debris we have collectively arrived at a point where tens of millions of tiny pieces of debris are currently in orbit, decaying at diverse rates in a situation where a single flake of paint has been demonstrated to be capable of causing damage when impacting at high relative velocities. At the other end of the spectrum, defunct satellites (e.g., ESA's Envisat) present discrete problems worthy of individual retrieval/disposal efforts but fraught with complications arising from ownership to potentially still effective ITAR constraints on access to onboard technology. And, of course, the managers of the International Space Station are absolutely paranoid about higher altitude orbital debris eventually decaying to and ultimately impacting their very large orbiting facility. While space may realistically be dubbed "infinite," very specific orbits, or sets of orbits, have practical capacity limits. In GEO, for example, spacing of satellites along it are subject to constraints arising from use of the same radio frequency spectra and the size of ground based antennas required to spatially discriminate between adjacent satellites. In popular high inclination sun-synchronous Earth imaging orbits, these all converge near the poles, creating a traffic management concern arising from the risk of collision. The subject of "green propellants" is treated from several aspects. The Liquid Oxygen / Liquid Hydrogen system, while yielding only water vapor from combustion, may have a significant carbon footprint associated with the manufacture of the LH2 from methane or methanol. Aluminum oxide, an exhaust product of common solid propellant boosters is generally regarded as inert, but the inhalation of fine particles of it can cause pulmonary fibrosis or other lung damage in humans. Additionally the need for oxidizer depletion shutdown in the family of hydrazine/oxidizer booster stages results in significant quantities of UDMH (for example) being dispersed upon impact of the early stages. No Foreword can do adequate justice to the carefully developed material within the publication itself. For a detailed and thought provoking coverage of the principal topics associated with the sustainability of space operations, this book is highly recommended, authoritative, and "a good read."
Author: National Research Council Publisher: National Academies Press ISBN: 0309253624 Category : Science Languages : en Pages : 376
Book Description
NASA's Office of the Chief Technologist (OCT) has begun to rebuild the advanced space technology program in the agency with plans laid out in 14 draft technology roadmaps. It has been years since NASA has had a vigorous, broad-based program in advanced space technology development and its technology base has been largely depleted. However, success in executing future NASA space missions will depend on advanced technology developments that should already be underway. Reaching out to involve the external technical community, the National Research Council (NRC) considered the 14 draft technology roadmaps prepared by OCT and ranked the top technical challenges and highest priority technologies that NASA should emphasize in the next 5 years. This report provides specific guidance and recommendations on how the effectiveness of the technology development program managed by OCT can be enhanced in the face of scarce resources.
Author: Alfred B. Bortz Publisher: Twenty-First Century Books ISBN: 0761372806 Category : Juvenile Nonfiction Languages : en Pages : 80
Book Description
From earliest times, humans have looked to the sky in wonder, and their wonder and curiosity fueled science. Ancient peoples built enormous temples and monuments to observe the sun and track the movement of stars. And as scientific knowledge expanded, technologies grew more sophisticated. Each development changed the way we viewed our place in the universe. But no technology changed our understanding more than the ability to launch scientific equipment and human explorers into space. In this book, we'll explore seven wonders of space technology. Scientists and engineers have built vehicles and equipment to explore the farthest reaches of the solar system. Orbiting satellites and telescopes have given us everything from more accurate weather reports to glimpses back to the beginning of the universe. International teams have built an orbiting space laboratory and are working on plans for human lunar settlements and missions to other planets. Learn about the people and the science behind these amazing advances in space technology.
Author: Benjamin S. Lambeth Publisher: Rand Corporation ISBN: 0833040960 Category : Political Science Languages : en Pages : 138
Book Description
In the Afghanistan war, U.S. carrier-based fighters substituted almost entirely for land-based theater air forces. The Navy's carriers again played a key role in conducting around-the-clock operations against Saddam Hussein's forces in Iraq. American carrier air power is now able to conduct coordinated deep-strike missions well beyond coastal reaches. The Navy's performance over Afghanistan and Iraq showed how the nation's carrier force can provide around-the-clock target coverage, consistently accurate target attack, and multiple successful target attacks per sortie.
Author: United States. Congress. House. Committee on Science. Subcommittee on Space and Aeronautics Publisher: ISBN: Category : Technology & Engineering Languages : en Pages : 152
Author: Andrew J. Butrica Publisher: JHU Press ISBN: 9780801873386 Category : Science Languages : en Pages : 294
Book Description
While the glories and tragedies of the space shuttle make headlines and move the nation, the story of the shuttle forms an inseparabe part of a lesser-known but no less important drama—the search for a reusable single-stage-to-orbit rocket. Here an award-winning student of space science, Andrew J. Butrica, examines the long and tangled history of this ambitious concept, from it first glimmerings in the 1920s, when technicians dismissed it as unfeasible, to its highly expensive heyday in the midst of the Cold War, when conservative-backed government programs struggled to produce an operational flight vehicle. Butrica finds a blending of far-sighted engineering and heavy-handed politics. To the first and oldest idea—that of the reusable rocket-powered single-stage-to-orbit vehicle—planners who belonged to what President Eisenhower referred to as the military-industrial complex.added experimental ("X"), "aircraft-like" capabilties and, eventually, a "faster, cheaper, smaller" managerial approach. Single Stage to Orbit traces the interplay of technology, corporate interest, and politics, a combination that well served the conservative space agenda and ultimately triumphed—not in the realization of inexpensive, reliable space transport—but in a vision of space militarization and commercialization that would appear settled United States policy in the early twenty-first century. -- D. M. Ashford
Author: United States. Congress. House. Committee on Science. Subcommittee on Space and Aeronautics Publisher: ISBN: Category : Law Languages : en Pages : 80
Author: Dale L. Hayden Publisher: ISBN: Category : Astronautics Languages : en Pages : 56
Book Description
Preface This paper uses open source documents to determine the current state of play in space operations within the international community and to propose a viable strategy United States policymakers can use to protect U.S. vital interests. It does not attempt to prescribe specific actions, but rather to suggest in light of other alternatives, one that provides the greatest long term benefit. The purpose of this paper is to propose a means by which policymakers can best protect U.S. national interests in light of the increased international development of space. It does this by addressing two issues: why following a multilateral, diplomatic and legal approach to confronting international space development is the most beneficial strategy to protecting American national interests; why policymakers will use multilateral engagement to resolve continuous space development issues despite inclinations to act otherwise.
Author: National Research Council
Author: Committee on Advanced Space Technology
Author: Michael Simpson Ph D
Author: National Research Council
Author: Alfred B. Bortz
Author: Benjamin S. Lambeth
Author: United States. Congress. House. Committee on Science. Subcommittee on Space and Aeronautics
Author: Andrew J. Butrica
Author: United States. Congress. House. Committee on Science. Subcommittee on Space and Aeronautics
Author: Dale L. Hayden
Author: Howard F. Didsbury