22 research outputs found

    The Second Conference on Lunar Bases and Space Activities of the 21st Century, volume 1

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    These papers comprise a peer-review selection of presentations by authors from NASA, LPI industry, and academia at the Second Conference (April 1988) on Lunar Bases and Space Activities of the 21st Century, sponsored by the NASA Office of Exploration and the Lunar Planetary Institute. These papers go into more technical depth than did those published from the first NASA-sponsored symposium on the topic, held in 1984. Session topics covered by this volume include (1) design and operation of transportation systems to, in orbit around, and on the Moon, (2) lunar base site selection, (3) design, architecture, construction, and operation of lunar bases and human habitats, and (4) lunar-based scientific research and experimentation in astronomy, exobiology, and lunar geology

    Requirements for the conceptual design of advanced underground coal extraction systems

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    Conceptual design requirements are presented for underground coal mining systems having substantially improved performance in the areas of production cost and miner safety. Mandatory performance levels are also set for miner health, environmental impact, and coal recovery. In addition to mandatory design goals and constraints, a number of desirable system characteristics are identified which must be assessed in terms of their impact on production cost and their compatibility with other system elements. Although developed for the flat lying, moderately thick seams of Central Appalachia, these requirements are designed to be easily adaptable to other coals

    Manned Mars Mission. Working group papers, volume 2, section 5 - appendix

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    Topics discussed include: science investigations and issues; life science/medical issues; subsystems and technology development requirements; political issues; and impacts on other programs

    Lunar bases and space activities of the 21st century

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    Covers subjects ranging from engineering analyses of space transportation networks and planetary surface outposts to legal, sociological, and public policy discussions related to space program initiatives over the next few decades. Scientists proposed experiments suited for a manned lunar space base; designers suggested architectural concepts and construction techniques for planetary surface habitats; and bioengineers reviewed the essential elements of biologically based, regenerative life support systems.Sponsored by National Aeronautics and Space Administration, American Institute of Aeronautics and Astronautics, Lunar and Planetary Institute, American Geophysical Union, American Nuclear Society, American Society of Civil Engineers, Space Studies Institute, National Space Society.Prepared by the Publications Office of the Lunar and Planetary InstituteGas Jet Diffusion Flames Under Reduced-G Conditions / M.Y. Bahadori and R.B. Edelman--Developing a Safe On-Orbit Cryogenic Depot / N.J. Bahr--An Assessment of Lunar Base Surface Operations and its Applications to Communication Model Development / L. Bell--Constant Temperature Vessels for Lunar Base Applications / D.E. Bergeron--Experimentation and System Modeling Efforts in Support of Space Power Systems / F.R. Best and M.J. Gaeta--Modeling a Lunar Base Program / C. Bilby and S. Nozette--Lunar Base Program Impacts on the Proposed Low-Earth Orbit Space Station / C. Bilby; B. Chesley, D. Korsmeyer, and H. Davis--A Lunar Electromagnetic Launcher / C. Bilby, H. Davis, S. Nozette, M. Driga, and R. Kamm--Delivering Liquid Oxygen to Low Earth Orbit / C. Bilby, G. McGlamery, and D. Ashley--Evolving Lava Tube Lunar Base Simulations with Integral Instructional Capabilities / T.L. Billings, J. Dabrowski, and B. Walden--Lunar Base Orbital Science: Lunar Mapping-, Monitoring-, and Short-Lived Phenomena- Orbiters / A.B. Binder--Lunar Base Site Selection: Lunar Resource Criteria / A.B. Binder--Lunar Landing via a Linear Accelerator / A.B. Binder--Nuclear Reactor Power Systems for Lunar and Planetary Bases / H.S. Bloomfield--Modeling Construction Requirements for a Manned Lunar Base / W. Boles and D. Ashley--Computation of Selenocentric Orbits Using Total Energy / V.R. Bond and D.D. Mulcihy

    The Reconfiguration Design of Redundant Thrust of Shields Excavating in Various Geologic Conditions

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    OEXP exploration studies technical report. Volume 3: Special reports, studies, and indepth systems assessments

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    The Office of Exploration (OEXP) at NASA has been tasked with defining and recommending alternatives for an early 1990's national decision on a focused program of manned exploration of the Solar System. The Mission analysis and System Engineering (MASE) group, which is managed by the Exploration Studies Office at the Johnson Space Center, is responsible for coordinating the technical studies necessary for accomplishing such a task. This technical report, produced by the MASE, describes the process used to conduct exploration studies and discusses the mission developed in a case study approach. The four case studies developed in FY88 include: (1) a manned expedition to PHOBOS; (2) a manned expedition to MARS; (3) a lunar surface observatory; and a lunar outpost to early Mars evolution. The final outcome of this effort is a set of programmatic and technical conclusions and recommendations for the following year's work

    Proceedings of the 8th Annual Summer Conference: NASA/USRA Advanced Design Program

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    Papers presented at the 8th Annual Summer Conference are categorized as Space Projects and Aeronautics projects. Topics covered include: Systematic Propulsion Optimization Tools (SPOT), Assured Crew Return Vehicle Post Landing Configuration Design and Test, Autonomous Support for Microorganism Research in Space, Bioregenerative System Components for Microgravity, The Extended Mission Rover (EMR), Planetary Surface Exploration MESUR/Autonomous Lunar Rover, Automation of Closed Environments in Space for Human Comfort and Safety, Walking Robot Design, Extraterrestrial Surface Propulsion Systems, The Design of Four Hypersonic Reconnaissance Aircraft, Design of a Refueling Tanker Delivering Liquid Hydrogen, The Design of a Long-Range Megatransport Aircraft, and Solar Powered Multipurpose Remotely Powered Aircraft

    Human Exploration of Mars Design Reference Architecture 5.0, Addendum #2

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    This report serves as the second Addendum to NASA-SP-2009-566, "Human Exploration of Mars Design Reference Architecture 5.0." The data and descriptions contained within this Addendum capture some of the key assessments and studies produced since publication of the original document, predominately covering those conducted from 2009 through 2012. The assessments and studies described herein are for the most part independent stand-alone contributions. Effort has not been made to assimilate the findings to provide an updated integrated strategy. That is a recognized future effort. This report should not be viewed as constituting a formal plan for the human exploration of Mars

    The Mechanical Behavior of Salt X

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    Rock salt formations have long been recognized as a valuable resource - not only for salt mining but for construction of oil and gas storage caverns and for isolation of radioactive and other hazardous wastes. Current interest is fast expanding towards construction and re-use of solution-mined caverns for storage of renewable energy in the form of hydrogen, compressed air and other gases. Evaluating the long term performance and safety of such systems demands an understanding of the coupled mechanical behavior and transport properties of salt. This volume presents a collection of 60 research papers defining the state-of-the-art in the field. Topics range from fundamental work on deformation mechanisms and damage of rock salt to compaction of engineered salt backfill. The latest constitutive models are applied in computational studies addressing the evolution and integrity of storage caverns, repositories, salt mines and entire salt formations, while field studies document ground truth at multiple scales. The volume is structured into seven themes: Microphysical processes and creep models Laboratory testing Geological isolation systems and geotechnical barriers Analytical and numerical modelling Monitoring and site-specific studies Cavern and borehole abandonment and integrity Energy storage in salt caverns The Mechanical Behavior of Salt X will appeal to graduate students, academics, engineers and professionals working in the fields of salt mechanics, salt mining and geological storage of energy and wastes, but also to researchers in rock physics in general
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