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Astonishing answers to unspoken questions revealed! Dr. Rick Fleeter rfleeter@mindspring.com 11573 Greenwich Point, Reston VA 20194 They say fish gotta swim and birds gotta fly, but what they don't tell you is that thermodynamicists gotta travel. In fact, travel is so fundamental to the life of the engineer or scientist, that most of them no more realize that simple fact, than fish realize what water is. One who did was the greatest Thermodynamicist of all, Ludwig Boltzman. As so often happens, seeing a greater perspective led him to write - in his case the essay "Travels of a Thermodynamicist in California" but also to his profound depression, which he successfully, and appropriately, resol...
Changing the focus of the multibillion-dollar global aerospace business toward smaller, lower-cost spacecraft is not happening solely due to technical, managerial, financial or market motivations. Rick Fleeter's second book on the small, low-cost space programmes which are the fastest-growing segment of aerospace activity, gives the reader a keen understanding of the full spectrum of factors driving this profound change. The text then goes beyond engineering technologies and management techniques to envision the tantalizing prospects microspace has in store for the industry, its present markets and those of the future.
Beginning with the basic elements that differentiate space programs from other management challenges, Space Program Management explains through theory and example of real programs from around the world, the philosophical and technical tools needed to successfully manage large, technically complex space programs both in the government and commercial environment. Chapters address both systems and configuration management, the management of risk, estimation, measurement and control of both funding and the program schedule, and the structure of the aerospace industry worldwide.
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.
In March 2005, the NASA History Division and the Division of Space History at the National Air and Space Museum brought together a distinguished group of scholars to consider the state of the discipline of space history. This volume is a collection of essays based on those deliberations. The meeting took place at a time of extraordinary transformation for NASA, stemming from the new Vision of Space Exploration announced by President George W. Bush in January 204: to go to the Moon, Mars, and beyond. This Vision, in turn, stemmed from a deep reevaluation of NASA?s goals in the wake of the Space Shuttle Columbia accident and the recommendations of the Columbia Accident Investigation Board. The new goals were seen as initiating a "New Age of Exploration" and were placed in the context of the importance of exploration and discovery to the American experiences. (Amazon).
Essential Spaceflight Dynamics and Magnetospherics describes, in the first instance, some of the key aspects of celestial mechanics and spaceflight dynamics. It begins with classical two and three body problems illustrative of the aesthetic aspects of applying analytical methods of investigation to celestial mechanics. Then, osculating orbital elements are introduced as well as analysis techniques sufficient to evaluate the influence of various disturbing forces on spacecraft. Next a theory of manoeuvres is outlined and the methodology of making interplanetary trajectory corrections. Ideas involving various approaches to orbital element determinations using measured data are also considered. The forces applied to a spacecraft can result in the development of torques that influence attitude motion and the effects of the most important of these are described in terms of equilibrium positions, periodic motions, steady-state and transient motions. Also considered is the problem of attitude control of a spacecraft using active and/or passive methods of orientation and stabilization. In addition, a more advanced treatment of the development of attitude control systems is provided.
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This book examines the effects of spaceflight at cellular and organism levels. Research on the effects of gravity - or its absence - and ionizing radiation on the evolution, development, and function of living organisms is presented in layman's terms. The book describes the benefits of space biology for basic and applied research to support human space exploration and the advantages of space as a laboratory for scientific, technological, and commercial research.
A modern pilgrimage of passages through the heights and depths of solitude and companionship, the Appalachian Trail thru-hike is a journey into the soul as much as through the mountains. In this inspirational collection of vignettes and refl ections on life through the eyes of a hiker, the sky overhead represents the limitless opportunities of life held in mysterious tension with the path of one’s choices. The walk is a daily reminder of our interconnectedness to the created and non-created realm—and the chance to see the wordless stories the world around us can tell.