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Space Tethers and Space Elevators by Michel van Pelt Pdf
Michel van Pelt explains for the first time the principle of space tethers: what they are and how they can be used in space. He introduces non-technical space enthusiasts to the various possibilities and feasibility of space tethers including the technological challenges and potential benefits. He illustrates how, because of their inherent simplicity, space tethers have the potential to make space travel much cheaper, while ongoing advances in tether material technology may make even seemingly far-fetched ideas a reality in the not too distant future.
The Space Elevator by Bradley C. Edwards,Eric A. Westling Pdf
The authors take the reader through the history of the concept, technical design and economic practicalities of building an elevator to space, and, ultimately, the implications of what such a low cost transportation system would mean to society. Based on three years of NASA-funded studies and written for the technically literate layperson, Edwards and Westling discuss the recent technological advances that now make the space elevator feasible. They conclude by addressing the effects that the space elevator could have on mankind's future from communications and energy to colonizing space.
In the last year, the International Space Elevator Consortium assessed that basic technological needs can be met with current capabilities: and, each segment of the Space Elevator Transportation System is ready for engineering validation. Because of the availability of a new material as a potential Space Elevator tether, the community strongly believes that a Space Elevator will be initiated in the near term. Included in the book is a series of appendices that are tremendous references to the status of the space elevator today. Included are a lexicon of space elevator terms, over 750 references in the bibliography, short descriptions of eight ISEC year-long studies and two IAA 4-year studies on space elevators, as well as a summary of over 20 Architectural Notes covering the development of space elevator technologies.
Design Considerations for Space Elevator Tether Climbers by Cathy Swan,Peter Swan,Robert "Skip" Penny,John Knapman,Peter Glaskowsky Pdf
The subject selected for this 2013 study is the Space Elevator Tether Climber. The objective of the one year study was to survey current concepts and technologies related to tether climbers, identify critical issues, questions, and concerns, assess their impact on the development of space elevators, and project towards the future. The following are a few of the conclusions: - The study used the concept of "constant power" as a baseline because of its ability to lower design requirements on the tether climber. - The mass breakout of 6 MT for a climber and 14 MT for customer payloads seems feasible. The estimate is that with a travel time of one week to GEO seven tether climbers can be on a tether simultaneously. - The communication architecture should be integrated into the space elevator infrastructure and nodal layout. - Solar power, as the sole source, appears achievable. - The use of laser power as the sole source also seems achievable.
Gritty and scientifically accurate science fiction adventure from New York Times best-selling author Ben Bova and NASA space scientist Les Johnson. The first human mission to Mars meets with near-disaster when a meteoroid strikes the spacecraft, almost destroying it. The ship is too far from Earth to simply turn around and return home. The eight-person crew must ride their crippled ship to Mars while they desperately struggle to survive. On Earth, powerful political forces that oppose human spaceflight try to use the accident as proof that sending humans into space is too dangerous to continue. The whole human space flight program hangs in the balance. And if the astronauts can’t nurse their ship to Mars and back, the voyagers will become either the first Martian colonists—or the first humans to perish on another planet. At the publisher's request, this title is sold without DRM (Digital Rights Management). About Mars, Inc.: "The Hugo winner returns to his most popular subject: the quest for Mars."—Publishers Weekly About the award winning novels of Ben Bova: “Technically accurate and absorbing . . .”—Kirkus “[Bova is] the science fiction author who will have the greatest effect on the world.”—Ray Bradbury “A masterful storyteller”—Vector “Gives a good read while turning your eyes to what might be in the not so distant future, just like Clarke and Asimov used to do so well.”—SFX
Under the editorship of David Raitt, this timely book brings together for the first time the record of people, places, developments and activities, in fiction and in fact, of the space elevator - a 100,000 km long, meter wide, ribbon reaching up from the Earth and into space along which robotic climbers that will travel to bring payloads into orbit at a fraction of the price of rocket launches. The chapters in the book cover the early pioneers who dreamt up the concept initially some 120 years ago; the work of modern day scientists and engineers who have developed the concept into doable plans; how the concept has been portrayed in novels, films and art; the conferences at which interested people could present and discuss their work and ideas; the global community that has grown up around space elevators and the competition challenges that have been held; and what the future may hold.
What Is Space Elevator One concept for a transportation system that would link planets to space is called a space elevator. A cable that is attached to the surface and extends into space would be the primary component of this system. Without the need for huge rockets, the architecture of the system would enable vehicles to ascend the cable from the surface of a planetary body, such as the surface of the Earth, and enter orbit directly. Because of the enormous weight, a space elevator based on Earth could not simply be a tall tower supported from below. Instead, it would consist of a cable with one end attached to the surface near the equator and the other end attached to a counterweight in space beyond geostationary orbit. This would allow the elevator to move between the surface and the counterweight. The opposing forces of gravity, which is stronger at the lower end, and the upward centrifugal force, which is stronger at the upper end, would result in the cable being held up, under tension, and stationary over a single position on Earth. Gravity is stronger at the lower end, while the upward centrifugal force is stronger at the upper end. After the tether has been deployed, climbers will be able to use mechanical methods to repeatedly ascend and descend the tether in order to release their payload into and out of orbit. How You Will Benefit (I) Insights, and validations about the following topics: Chapter 1: Space elevator Chapter 2: Interplanetary spaceflight Chapter 3: The Fountains of Paradise Chapter 4: Counterweight Chapter 5: Skyhook (structure) Chapter 6: Lunar space elevator Chapter 7: Megascale engineering Chapter 8: Yuri Artsutanov Chapter 9: Momentum exchange tether Chapter 10: Launch loop Chapter 11: Orbital ring Chapter 12: Globus Cassus Chapter 13: Space elevators in fiction Chapter 14: Specific strength Chapter 15: Gravity of Earth Chapter 16: Non-rocket spacelaunch Chapter 17: Space elevator safety Chapter 18: Space elevator construction Chapter 19: Space tether Chapter 20: Space elevator competitions Chapter 21: Hypothetical technology (II) Answering the public top questions about space elevator. (III) Real world examples for the usage of space elevator in many fields. (IV) 17 appendices to explain, briefly, 266 emerging technologies in each industry to have 360-degree full understanding of space elevator' technologies. Who This Book Is For Professionals, undergraduate and graduate students, enthusiasts, hobbyists, and those who want to go beyond basic knowledge or information for any kind of space elevator.
What is a space elevator? A space elevator is a physical connection from the surface of the Earth to a geostationary Earth orbit (GEO) above the Earth .35,786 km in altitude. Its center of mass is at the geostationary point such that it has a 24-hr orbit and stays over the same point above the equator as the Earth rotates on its axis. The vision is that a space elevator would be utilized as a transportation and utility system for moving people, payloads, power, and gases between the surface of the Earth and space. It makes the physical connection from Earth to space in the same way a bridge connects two cities across a body of water. The Earth to GEO space elevator is not feasible today, but could be an important concept for the future development of space in the latter part of the 21st century. It has the potential to provide mass transportation to space in the same way highways, railroads, power lines, and pipelines provide mass transportation across the Earth's surface. The low energy requirements for moving payloads up and down the elevator could make it possible to achieve cost to orbit
This book describes the technology, history, and future of rocket planes. Michel van Pelt journies into this exciting world, examining the exotic concepts and actual flying vehicles that have been devised over the last hundred years. He recounts the history of rocket airplanes, from the early pioneers who attached simple rockets onto their wooden glider airplanes to the modern world of high-tech research vehicles. The author visits museums where rare examples of early rocket planes are kept and modern laboratories where future spaceplanes are being developed. He explains the technology in an easily understandable way, describing the various types of rocket airplanes and looking at the possibilities for the future. Michel van Pelt considers future spaceplanes, presenting various modern concepts and developments. He describes the development from cutting edge research via demonstrator vehicles to operational use. He also evaluates the replacement of the Space Shuttle with a seemingly old-fashioned capsule system, the parallel developments in suborbital spaceplanes such as SpaceShipOne and SpaceShipTwo, piloted versus automatic flight, and related developments in airliners and military aircraft.
This book takes the reader on a journey through the history of extremely ambitious, large and complex space missions that never happened. What were the dreams and expectations of the visionaries behind these plans, and why were they not successful in bringing their projects to reality thus far? As spaceflight development progressed, new technologies and ideas led to pushing the boundaries of engineering and technology though still grounded in real scientific possibilities. Examples are space colonies, nuclear-propelled interplanetary spacecraft, space telescopes consisting of multiple satellites and canon launch systems. Each project described in this book says something about the dreams and expectations of their time, and their demise was often linked to an important change in the cultural, political and social state of the world. For each mission or spacecraft concept, the following will be covered: • Description of the design. • Overview of the history of the concept and the people involved. • Why it was never developed and flown • What if the mission was actually carried out – consequences, further developments, etc.
Global Space Governance: An International Study by Ram S. Jakhu,Joseph N. Pelton Pdf
This book is based on the findings, conclusions and recommendations of the Global Space Governance study commissioned by the 2014 Montreal Declaration that called upon civil society, academics, governments, the private sector, and other stakeholders to undertake an international interdisciplinary study. The study took three years to complete. It examines the drivers of space regulations and standards, key regulatory problems, and especially addresses possible improvements in global space governance. The world's leading experts led the drafting of chapters, with input from academics and knowledgeable professionals in the public and private sectors, intergovernmental organizations, and nongovernmental organizations from all the regions of the world with over 80 total participants. This book and areas identified for priority action are to be presented to the UN Committee on the Peaceful Uses of Outer Space and it is hoped will be considered directly or indirectly at the UNISPACE+50 event in Vienna, Austria, in 2018. The report, a collective work of all the contributors, includes objective analysis and frank statements expressed without pressure of political, national, and occupational concerns or interest. It is peer-reviewed and carefully edited to ensure its accuracy, preciseness, and readability. It is expected that the study and derivative recommendations will form the basis for deliberations and decisions at international conferences and meetings around the world on the theme of global space governance. This will hopefully include future discussion at the UN Committee on the Peaceful Uses of Outer Space.
Today's Space Elevator Assured Survivability Approach for Space Debris by Peter Swan Pdf
This study was designed to take the concept of Space Elevators and answer some questions relative to space debris. The team built upon the 2010 study on the topic and addressed many other issues to include: - The probabilities of orbital conjunctions between a space elevator and debris in Low Earth Orbit, Geo Earth Orbit, and Medium Earth Orbit. - The growth rate of space debris as it threatens operational space elevator (2010, 2019, 2030)? - Mitigation of risk for the space community through design, policies, operations, and lowering the threat. This year's study topic focused upon calculations for potential conjunction probabilities from densities of debris for 2010, 2019, and 2030. ""Space debris mitigation is an engineering problem with definable quantities such as density of debris and lengths/widths of targets. With proper knowledge and good operational procedures, the threat of space debris is not a show-stopper. However, mitigation approaches must be accepted and implemented robustly.""
Saving Proxima by Travis S. Taylor,Les Johnson Pdf
The year is 2072. At the lunar farside radio observatory, an old school radio broadcast is detected, similar to those broadcast on Earth in the 1940s and early 1950s, but in an unknown language, coming from an impossible source, and originating at an equally impossible location—Proxima Centauri. While the nations of Earth debate making First Contact, they learn that the Proximans are facing an extinction-level disaster, forcing a decision: Will Earth send a ship on a multiyear trip to provide aid? Interstellar travel is not easy, and by traveling at the speeds required to arrive before disaster strikes at Proxima, humans will learn firsthand the effects of Einstein’s Special Relativity and be forced to ponder the ultimate of questions of "Are we alone in the universe?" and "What does it mean to be human?" At the publisher's request, this title is sold without DRM (Digital Rights Management). About Travis S. Taylor: “[E]xplodes with inventive action.”—Publishers Weekly on Travis S. Taylor’s The Quantum Connection “[Warp Speed] reads like Doc Smith writing Robert Ludlum . . . You won’t want to put it down.”—John Ringo