Download or read book Determining the Economic Plausibility of Dual Manifesting Reusable Launch Vehicles and Reusable Orbital Transfer Vehicles for the Replenishment of Military Satellites written by Crystal L. Evans and published by . This book was released on 1997-02-01 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: Currently, the Air Force launches military satellites on expendable launch vehicles to low earth orbit (LEO), and with the use of a chemical upper stage or an apogee kick motor, moves the satellite to a higher orbit. This launch procedure is extremely costly because it requires additional launch preparations, technology considerations, equipment, and fuel. Also, the additional mass of the chemical upper stage causes a larger, and thus more expensive, launch vehicle to be required. An economical alternative is to utilize reusable launch vehicles (RLVs) and reusable orbital launch vehicles (ROTVs). This concept could possibly achieve even greater savings if satellites were dual manifested on the launch vehicles. This thesis determines - by varying mass capacity of RLVs, the cost per kg of RLV mass capacity, and the satellite cost per kg - when, within a given scenario, the savings of dual manifesting is at least ten percent of the cost of single manifesting by developing a dual manifesting algorithm and simulation to analyze possible savings.
Download or read book INFORMS Conference Program written by Institute for Operations Research and the Management Sciences. National Meeting and published by . This book was released on 1997 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Department of Defense Dictionary of Military and Associated Terms written by United States. Joint Chiefs of Staff and published by . This book was released on 1979 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Toward a Theory of Spacepower Selected Essays written by and published by Smashbooks. This book was released on 2011 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Columbia Accident Investigation Board Report written by United States. Columbia Accident Investigation Board and published by . This book was released on 2003 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pathways to Exploration written by National Research Council and published by National Academies Press. This book was released on 2014-09-30 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: The United States has publicly funded its human spaceflight program on a continuous basis for more than a half-century, through three wars and a half-dozen recessions, from the early Mercury and Gemini suborbital and Earth orbital missions, to the lunar landings, and thence to the first reusable winged crewed spaceplane that the United States operated for three decades. Today the United States is the major partner in a massive orbital facility - the International Space Station - that is becoming the focal point for the first tentative steps in commercial cargo and crewed orbital space flights. And yet, the long-term future of human spaceflight beyond this project is unclear. Pronouncements by multiple presidents of bold new ventures by Americans to the Moon, to Mars, and to an asteroid in its native orbit, have not been matched by the same commitment that accompanied President Kennedy\'s now fabled 1961 speech-namely, the substantial increase in NASA funding needed to make it happen. Are we still committed to advancing human spaceflight? What should a long-term goal be, and what does the United States need to do to achieve it? Pathways to Exploration explores the case for advancing this endeavor, drawing on the history of rationales for human spaceflight, examining the attitudes of stakeholders and the public, and carefully assessing the technical and fiscal realities. This report recommends maintaining the long-term focus on Mars as the horizon goal for human space exploration. With this goal in mind, the report considers funding levels necessary to maintain a robust tempo of execution, current research and exploration projects and the time/resources needed to continue them, and international cooperation that could contribute to the achievement of spaceflight to Mars. According to Pathways to Exploration, a successful U.S. program would require sustained national commitment and a budget that increases by more than the rate of inflation. In reviving a U.S. human exploration program capable of answering the enduring questions about humanity's destiny beyond our tiny blue planet, the nation will need to grapple with the attitudinal and fiscal realities of the nation today while staying true to a small but crucial set of fundamental principles for the conduct of exploration of the endless frontier. The recommendations of Pathways to Exploration provide a clear map toward a human spaceflight program that inspires students and citizens by furthering human exploration and discovery, while taking into account the long-term commitment necessary to achieve this goal.
Download or read book Report Technical report written by Commission for the Control of Huntington's Disease and Its Consequences and published by . This book was released on 1977 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Deep Space Propulsion written by K. F. Long and published by Springer Science & Business Media. This book was released on 2011-11-25 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: The technology of the next few decades could possibly allow us to explore with robotic probes the closest stars outside our Solar System, and maybe even observe some of the recently discovered planets circling these stars. This book looks at the reasons for exploring our stellar neighbors and at the technologies we are developing to build space probes that can traverse the enormous distances between the stars. In order to reach the nearest stars, we must first develop a propulsion technology that would take our robotic probes there in a reasonable time. Such propulsion technology has radically different requirements from conventional chemical rockets, because of the enormous distances that must be crossed. Surprisingly, many propulsion schemes for interstellar travel have been suggested and await only practical engineering solutions and the political will to make them a reality. This is a result of the tremendous advances in astrophysics that have been made in recent decades and the perseverance and imagination of tenacious theoretical physicists. This book explores these different propulsion schemes – all based on current physics – and the challenges they present to physicists, engineers, and space exploration entrepreneurs. This book will be helpful to anyone who really wants to understand the principles behind and likely future course of interstellar travel and who wants to recognizes the distinctions between pure fantasy (such as Star Trek’s ‘warp drive’) and methods that are grounded in real physics and offer practical technological solutions for exploring the stars in the decades to come.
Download or read book Societal Impact of Spaceflight written by Steven J. Dick and published by Government Printing Office. This book was released on 2007 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Space Systems Failures written by David M. Harland and published by Springer Science & Business Media. This book was released on 2007-09-14 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: The very first book on space systems failures written from an engineering perspective. Focuses on the causes of the failures and discusses how the engineering knowledge base has been enhanced by the lessons learned. Discusses non-fatal anomalies which do not affect the ultimate success of a mission, but which are failures nevertheless. Describes engineering aspects of the spacecraft, making this a valuable complementary reference work to conventional engineering texts.
Download or read book Space Vehicle Design written by Michael Douglas Griffin and published by AIAA. This book was released on 2004 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Warfare in a Fragile World written by Stockholm International Peace Research Institute and published by . This book was released on 1980 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Among the crucial problems that confront mankind today are those associated with a degraded environment. This book examines the extent to which warfare and other military activities contribute to such degradation. The military capability to damage the environment and to cause ecological disruption has escalated, and there is no sign that the level of conflict in the world is decreasing. The military use and abuse of each of the several major global habitats -- temperate, tropical, desert, arctic, insular, and oceanic -- are evalusated separately in the light of the civil use and abuse of that habitat"--Dust jacket.
Download or read book Finding the Shape of Space written by Christopher C. Shannon and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mastering the Ultimate High Ground Next Steps in the Military Uses of Space written by Benjamin S. Lambeth and published by Rand Corporation. This book was released on 1999-04-19 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: Assesses the military space challenges facing the Air Force and the nation in light of the findings and recommendations of the Space Commission. The author reviews the Air Force?'s involvement in space since its creation as an independent service in 1947; examines the circumstances that occasioned the commission?'s creation and the conceptual and organizational roadblocks that have impeded a more rapid growth of U.S. military space capability; and enumerates the challenges facing the Air Force with respect to space.
Download or read book El Ni o 1997 1998 written by Stanley A. Changnon and published by Oxford University Press. This book was released on 2000-04-06 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will cover the time span from the first indications of El Nino (May 1997) until its reversal (June 1998). The focus will be largely on the United States, where El Nino produced widespread changes in how the public perceives weather and in the accuracy of forecasts Among the key issues it will examine are how the news media interpreted and dramatixed El Nino and the reaction both of the public and decision-makers (the latter based on interviews with agribusiness, utilities, water management agencies, etc.); the scientific issues emerging from the event; and the social and economic consequences of the event. Finally, it will suggest what can and should be done when El Nino occurs in the future.
Download or read book Space Mining and Manufacturing written by Davide Sivolella and published by Springer Nature. This book was released on 2019-12-05 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book produces convincing evidence that exploiting the potential of space could help solve many environmental and social issues affecting our planet, such as pollution, overcrowding, resource depletion and conflicts, economic inequality, social unrest, economic instability and unemployment. It also touches on the legal problems that will be encountered with the implementation of the new technologies and new laws that will need to be enacted and new organizations that will need to be formed to deal with these changes. This proposition for a space economy is not science fiction, but well within the remit of current or under development technologies. Numerous technologies are described and put together to form a coherent and feasible road map that, if implemented, could lead humankind towards a brighter future.
Download or read book Leo on the Cheap written by John R. London and published by . This book was released on 2002-02-01 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Colonel London has developed an extensive and well-documented amount of information on the original causes of high launch costs, the specifics of current costs, and the reasons that these costs continue to be perpetuated. He offers recommendations that buck the popular trend of advanced technology solutions, and he describes how a significant reduction in launch costs would have a broad positive impact on a variety of space systems and activities. His research is thorough and his command of the subject is impressive.
