Rapid Mars Transits With Exhaust Modulated Plasma Propulsion
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Rapid Mars Transits With Exhaust Modulated Plasma Propulsion
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Author : Franklin R. Chang-Diaz
language : en
Publisher:
Release Date : 1995
Rapid Mars Transits With Exhaust Modulated Plasma Propulsion written by Franklin R. Chang-Diaz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Mars probes categories.
Rapid Mars Transits With Exhaust Modulated Plasma Propulsion
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Author : Franklin R. Chang-Díaz
language : en
Publisher:
Release Date : 1975
Rapid Mars Transits With Exhaust Modulated Plasma Propulsion written by Franklin R. Chang-Díaz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Mars probes categories.
The operational characteristics of the Exhaust-Modulated Plasma Rocket are described. Four basic human and robotic mission scenarios to Mars are analyzed using numerical optimization techniques at variable specific impulse and constant power. Abort capabilities, essential for human missions, are also explored.
To Mars And Beyond Fast
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Author : Franklin Chang Díaz
language : en
Publisher: Springer
Release Date : 2017-06-03
To Mars And Beyond Fast written by Franklin Chang Díaz and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-06-03 with Science categories.
As advanced in-space propulsion moves from science fiction to reality, the Variable Specific Impulse Magnetoplasma Rocket, or VASIMR® engine, is a leading contender for making 'Mars in a month' a possibility. A paradigm shift in space transportation, this book is an in-depth and compelling story co-written by its inventor. It traces the riveting history of the development of the VASIMR® engine. This landmark technology is grounded in concepts of advanced plasma physics. It cross-pollinates ideas and disciplines to offer a new, practical, and sustainable solution for in-space transportation beyond low Earth orbit in the decades to come. Invented by the co-holder of the world’s spaceflight record, astronaut Franklin Chang Díaz, the VASIMR® engine is developed by Ad Astra Rocket Company in its Texas facilities with NASA as part of the NextSTEP VASIMR® partnership. With adequate funding, the first spaceflight of the VASIMR® engine is imminent. Plasma rockets feature exhaust velocities far above those achievable by conventional chemical rockets. The VASIMR® engine is the most advanced high-power plasma propulsion system operating in the world today and it may place long, fast interplanetary journeys withinour reach in the near future.
Deep Space Propulsion
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Author : K. F. Long
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-11-25
Deep Space Propulsion written by K. F. Long and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-11-25 with Technology & Engineering categories.
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.
Martian Outpost
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Author : Erik Seedhouse
language : en
Publisher: Springer Science & Business Media
Release Date : 2010-04-11
Martian Outpost written by Erik Seedhouse and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-04-11 with Technology & Engineering categories.
Mars Outpost provides a detailed insight into the various technologies, mission architectures, medical requirements, and training needed to send humans to Mars. It focuses on mission objectives and benefits, and the risks and complexities that are compounded when linked to an overall planet exploration program involving several expeditions and setting up a permanent presence on the surface. The first section provides the background to sending a human mission to Mars. Analogies are made with early polar exploration and the expeditions of Shackleton, Amundsen, and Mawson. The interplanetary plans of the European Space Agency, NASA, and Russia are examined, including the possibility of one or more nations joining forces to send humans to Mars. Current mission architectures, such as NASA’s Constellation, ESA’s Aurora, and Ross Tierney’s DIRECT, are described and evaluated. The next section looks at how humans will get to the Red Planet, beginning with the preparation of the crew. The author examines the various analogues to understand the problems Mars-bound astronauts will face. Additional chapters describe the transportation hardware necessary to launch 4-6 astronauts on an interplanetary trajectory to Mars, including the cutting edge engineering and design of life support systems required to protect crews for more than a year from the lethal radiation encountered in deep space. NASA’s current plan is to use standard chemical propulsion technology, but eventually Mars crews will take advantage of advanced propulsion concepts, such as the Variable Specific Impulse Magnetoplasma Rocket, ion drives and nuclear propulsion. The interplanetary options for reaching Mars, as well as the major propulsive maneuvers required and the trajectories and energy requirements for manned and unmanned payloads, are reviewed . Another chapter addresses the daunting medical problems and available countermeasures for humans embarking on a mission to Mars: the insidious effects of radiation on the human body and the deleterious consequences of bone and muscle deconditioning. Crew selection will be considered, bearing in mind the strong possibility that they may not be able to return to Earth. Still another chapter describes the guidance, navigation, and control system architecture, as well as the lander design requirements and crew tasks and responsibilities required to touch down on the Red Planet. Section 3 looks at the surface mission architectures. Seedhouse describes such problems as radiation, extreme temperatures, and construction challenges that will be encountered by colonists. He examines proposed concepts for transporting cargo and astronauts long distances across the Martian surface using magnetic levitation systems, permanent rail systems, and flying vehicles. In the penultimate chapter of the book, the author explains an adaptable and mobile exploration architecture that will enable long-term human exploration of Mars, perhaps making it the next space-based tourist location.
Analytical Solutions For Extremal Space Trajectories
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Author : Dilmurat M. Azimov
language : en
Publisher: Butterworth-Heinemann
Release Date : 2017-08-23
Analytical Solutions For Extremal Space Trajectories written by Dilmurat M. Azimov and has been published by Butterworth-Heinemann this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-08-23 with Technology & Engineering categories.
Analytical Solutions for Extremal Space Trajectories presents an overall treatment of the general optimal control problem, in particular, the Mayer’s variational problem, with necessary and sufficient conditions of optimality. It also provides a detailed derivation of the analytical solutions of these problems for thrust arcs for the Newtonian, linear central and uniform gravitational fields. These solutions are then used to analytically synthesize the extremal and optimal trajectories for the design of various orbital transfer and powered descent and landing maneuvers. Many numerical examples utilizing the proposed analytical synthesis of the space trajectories and comparison analyses with numerically integrated solutions are provided. This book will be helpful for engineers and researchers of industrial and government organizations, and is also a great resource for university faculty and graduate and undergraduate students working, specializing or majoring in the fields of aerospace engineering, applied celestial mechanics, and guidance, navigation and control technologies, applied mathematics and analytical dynamics, and avionics software design and development. Features an analyses of Pontryagin extremals and/or Pontryagin minimum in the context of space trajectory design Presents the general methodology of an analytical synthesis of the extremal and optimal trajectories for the design of various orbital transfer and powered descent and landing maneuvers Assists in developing the optimal control theory for applications in aerospace technology and space mission design
Accuracy Improvement In Magnetic Field Modeling For An Axisymmetric Electromagnet
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Author : Andrew V. Ilin
language : en
Publisher:
Release Date : 2000
Accuracy Improvement In Magnetic Field Modeling For An Axisymmetric Electromagnet written by Andrew V. Ilin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Magnetic fields categories.
This paper examines the accuracy and calculation speed for the magnetic field computation in an axisymmetric electromagnet. Different numerical techniques, based on an adaptive nonuniform grid, high order finite difference approximations and semi-analitical calculation of boundary conditions are considered. These techniques are being applied to the modeling of the Variable Specific Impulse Magnetoplasma Rocket. For high-accuracy calculations, a fourth-order scheme offers dramatic advantages over a second-order scheme. For complex physical configurations of interest in plasma propulsion, a second-order scheme with nonuniform mesh gives the best results. Also, the relative advantages of various methods are described when the speed of computation is an important consideration.
As The Future Catches You
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Author : Juan Enriquez
language : en
Publisher: Crown Currency
Release Date : 2001-11-06
As The Future Catches You written by Juan Enriquez and has been published by Crown Currency this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001-11-06 with Science categories.
You will never look at the world in the same way after reading As the Future Catches You. Juan Enriquez puts you face to face with a series of unprecedented political, ethical, economic, and financial issues, dramatically demonstrating the cascading impact of the genetic, digital, and knowledge revolutions on your life. Genetics will be the dominant language of this century. Those who can “speak it” will acquire direct and deliberate control over all forms of life. But most countries and individuals remain illiterate in what is rapidly becoming the greatest single driver of the global economy. Wealth will be more concentrated and those with knowledge to sell–both countries and individuals–will be the winners. Consider what will happen when: • Your genetic code can be digitally imprinted on an ID card and your insurance company and employer see that you are genetically disposed to, say, heart disease. • Pharmaceutical products are developed so that you can eat genetically modified broccoli to protect yourself from cancer. • Cloning will be as common as in vitro fertilization and scientists can influence the genetic design not only of other species but of your own children. • Creating wealth no longer requires many hands. Lone individuals are giving birth to entire new industries that rapidly become bigger than the economies of most countries on earth, but create very few jobs. As the Future Catches You resembles no other book. A typical page may contain just a few dozen words. But each seemingly discrete fact is like a chip in an intellectual mosaic that reveals its meaning and beauty only as you step back and see the big picture. Juan Enriquez is like the best teacher you ever had, one who helps you to see something in a new light and makes you say, “Now I get it!” Juan Enriquez’s main point is that technology is not kind, it does not say “please,” but slams into existing systems and destroys them while creating new ones. Countries and individuals can either surf new and powerful waves of change–or get crushed trying to stop them. The future is catching us all. Let it catch you with your eyes wide open.
Government Reports Announcements Index
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Author :
language : en
Publisher:
Release Date : 1996
Government Reports Announcements Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Science categories.
Space Technology And Applications International Forum 2000
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Author : Mohamed S. El-Genk
language : en
Publisher: American Institute of Physics
Release Date : 2000-01-27
Space Technology And Applications International Forum 2000 written by Mohamed S. El-Genk and has been published by American Institute of Physics this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-01-27 with Science categories.
The proceedings document the opportunities for space science onboard the international space station (ISS), currently under construction by an international consortium. These proceedings include the latest on the construction of and payload operations on the ISS; human physiology in space; fundamental physics; engineering research and technology development; thermal control technologies for future spacecraft; propulsion technology for interstellar precursor missions; breakthrough propulsion physics; next generation commercial/civil space transportation and reusable launch systems technology; spaceport development; potential manned and unmanned space missions; and advances in energy conversion technologies. STAIF-2000 is co-sponsored by NASA Headquarters and Field Centers, DOE, and The Boeing Company, in cooperation with major professional societies. Government aerospace industry and universities exhibit and present papers.