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298 Matching Results
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Space Exploration: Issues Concerning the "Vision for Space Exploration"
Report detailing the vision for space exploration, including budget changes for NASA, public reaction, and more.
Date:
November 18, 2005
Creator:
Smith, Marcia S.
Object Type:
Report
System:
The UNT Digital Library
Space Exploration: Issues Concerning the "Vision for Space Exploration"
Report detailing the vision for space exploration, including budget changes for NASA, public reaction, issues, and more.
Date:
June 9, 2005
Creator:
Smith, Marcia S.
Object Type:
Report
System:
The UNT Digital Library
Space Exploration: Overview of President Bush's "Vision for Space Exploration," and Key Issues for Congress
Report detailing the vision for space exploration, including budget changes for NASA, public reaction, and more.
Date:
March 15, 2005
Creator:
Smith, Marcia S.
Object Type:
Report
System:
The UNT Digital Library
Compact Neutron Generators for Medical Home Land Security andPlanetary Exploration
The Plasma and Ion Source Technology Group at Lawrence Berkeley National Laboratory has developed various types of advanced D-D (neutron energy 2.5 MeV), D-T (14 MeV) and T-T (0-9 MeV) neutron generators for wide range of applications. These applications include medical (Boron Neutron Capture Therapy), homeland security (Prompt Gamma Activation Analysis, Fast Neutron Activation Analysis and Pulsed Fast Neutron Transmission Spectroscopy) and planetary exploration with a sub-surface material characterization on Mars. These neutron generators utilize RF induction discharge to ionize the deuterium/tritium gas. This discharge method provides high plasma density for high output current, high atomic species from molecular gases, long life operation and versatility for various discharge chamber geometries. Four main neutron generator developments are discussed here: high neutron output co-axial neutron generator for BNCT applications, point neutron generator for security applications, compact and sub-compact axial neutron generator for elemental analysis applications. Current status of the neutron generator development with experimental data will be presented.
Date:
May 11, 2005
Creator:
Reijonen, J.
Object Type:
Article
System:
The UNT Digital Library
Space Stations
Congress continues to debate NASA’s International Space Station (ISS), a permanently occupied facility in Earth orbit where astronauts live and conduct research. Congress appropriated approximately $35 billion for the program from FY1985-2005. The initial FY2006 ISS request was $2.180 billion: $1.857 billion for construction and operations and $324 million for research to be conducted by ISS crews. In a July budget amendment, NASA transferred $168 million for ISS Crew/Cargo Services to another part of the NASA budget and reduced the ISS request commensurately. The final version of the FY2006 appropriations bill that includes NASA (H.R. 2862) cuts $80 million from the originally submitted budget, and NASA now plans to spend $306 million, instead of $324 million, on ISS research in FY2006.
Date:
November 17, 2005
Creator:
Smith, Marcia S.
Object Type:
Report
System:
The UNT Digital Library
NASA’s Space Shuttle Program: The Columbia Tragedy, the Discovery Mission, and the Future of the Shuttle
This report analyzes the Columbia and Discovery shuttles and the United States' approach to new methods of space traversal. Updated October 13, 2005.
Date:
October 13, 2005
Creator:
Smith, Marcia S.
Object Type:
Report
System:
The UNT Digital Library
[The National Aeronautics and Space Administration: Overview, FY2006 Budget in Brief, and Key Issues for Congress, March 16, 2005]
This report discusses the budget of the fiscal year of 2006 and the requests of the National Aeronautics and Space Administration. Updated March 16, 2005.
Date:
March 16, 2005
Creator:
Smith, Marcia S. & Morgan, Daniel
Object Type:
Report
System:
The UNT Digital Library
Seismic Evaluation of Hydorcarbon Saturation in Deep-Water Reservoirs
During this last quarter of the ''Seismic Evaluation of Hydrocarbon Saturation in Deep-Water Reservoirs'' project (Grant/Cooperative Agreement DE-FC26-02NT15342), we have moved forward on several fronts, including data acquisition as well as analysis and application. During this quarter we have: (1) Completed our site selection (finally); (2) Measured fluid effects in Troika deep water sand sample; (3) Applied the result to Ursa ''fizz gas'' zone; (4) Compared thin layer property averaging on AVO response; (5) Developed target oriented NMO stretch correction; (6) Examined thin bed effects on A-B crossplots; and (7) Begun incorporating outcrop descriptive models in seismic forward models. Several factors can contribute to limit our ability to extract accurate hydrocarbon saturations in deep water environments. Rock and fluid properties are one factor, since, for example, hydrocarbon properties will be considerably different with great depths (high pressure) when compared to shallow properties. Significant over pressure, on the other hand will make the rocks behave as if they were shallower. In addition to the physical properties, the scale and tuning will alter our hydrocarbon indicators. Reservoirs composed of thin bed effects will broaden the reflection amplitude distribution with incident angle. Normal move out (NMO) stretch corrections based on frequency shifts can …
Date:
October 31, 2005
Creator:
Batzle, Michael; Han, D-h; Gibson, R. & James, Huw
Object Type:
Report
System:
The UNT Digital Library
Seismic Evaluation of Hydrocarbon Saturation in Deep-Water Reservoirs
During this last quarter of the ''Seismic Evaluation of Hydrocarbon Saturation in Deep-Water Reservoirs'' project (Grant/Cooperative Agreement DE-FC26-02NT15342), we have moved forward on several fronts, including data acquisition as well as analysis and application. During this quarter we have: (1) Completed our site selection (finally); (2) Measured fluid effects in Troika deep water sand sample; (3) Applied the result to Ursa ''fizz gas'' zone; (4) Compared thin layer property averaging on AVO response; (5) Developed target oriented NMO stretch correction; (6) Examined thin bed effects on A-B crossplots; and (7) Begun incorporating outcrop descriptive models in seismic forward models. Several factors can contribute to limit our ability to extract accurate hydrocarbon saturations in deep water environments. Rock and fluid properties are one factor, since, for example, hydrocarbon properties will be considerably different with great depths (high pressure) when compared to shallow properties. Significant over pressure, on the other hand will make the rocks behave as if they were shallower. In addition to the physical properties, the scale and tuning will alter our hydrocarbon indicators. Reservoirs composed of thin bed effects will broaden the reflection amplitude distribution with incident angle. Normal move out (NMO) stretch corrections based on frequency shifts can …
Date:
January 22, 2005
Creator:
Batzle, Michael; Han, D-h; Gibson, R. & James, Huw
Object Type:
Report
System:
The UNT Digital Library
Laboratory Directed Research and Development Program FY 2004 Annual Report
The Oak Ridge National Laboratory (ORNL) Laboratory Directed Research and Development (LDRD) Program reports its status to the U.S. Department of Energy (DOE) in March of each year. The program operates under the authority of DOE Order 413.2A, 'Laboratory Directed Research and Development' (January 8, 2001), which establishes DOE's requirements for the program while providing the Laboratory Director broad flexibility for program implementation. LDRD funds are obtained through a charge to all Laboratory programs. This report describes all ORNL LDRD research activities supported during FY 2004 and includes final reports for completed projects and shorter progress reports for projects that were active, but not completed, during this period. The FY 2004 ORNL LDRD Self-Assessment (ORNL/PPA-2005/2) provides financial data about the FY 2004 projects and an internal evaluation of the program's management process. ORNL is a DOE multiprogram science, technology, and energy laboratory with distinctive capabilities in materials science and engineering, neutron science and technology, energy production and end-use technologies, biological and environmental science, and scientific computing. With these capabilities ORNL conducts basic and applied research and development (R&D) to support DOE's overarching national security mission, which encompasses science, energy resources, environmental quality, and national nuclear security. As a national resource, …
Date:
April 1, 2005
Creator:
Sjoreen, Terrence P
Object Type:
Report
System:
The UNT Digital Library
The Big and Little of Fifty Years of Moessbauer Spectroscopy at Argonne.
Using radioactive materials obtained by chance, a turntable employing gears from Heidelberg's mechanical toy shops, and other minimal equipment available in post World War II Germany, in 1959 Rudolf Moessbauer confirmed his suspicion that his graduate research had yielded ground-breaking results. He published his conclusion: an atomic nucleus in a crystal undergoes negligible recoil when it emits a low energy gamma ray and provides the entire energy to the gamma ray. In the beginning Moessbauer's news might have been dismissed. As Argonne nuclear physicist Gilbert Perlow noted: ''Everybody knew that nuclei were supposed to recoil when emitting gamma rays--people made those measurements every day''. If any such effect existed, why had no one noticed it before? The notion that some nuclei would not recoil was ''completely crazy'', in the words of the eminent University of Illinois condensed matter physicist Frederich Seitz. Intrigued, however, nuclear physicists as well as condensed matter (or solid state) physicists in various locations--but particularly at the Atomic Energy Research Establishment at Harwell in Britain and at Argonne and Los Alamos in the U.S.--found themselves pondering the Moessbauer spectra with its nuclear and solid state properties starting in late 1959. After an exciting year during which Moessbauer's …
Date:
September 20, 2005
Creator:
Westfall, C.
Object Type:
Report
System:
The UNT Digital Library
China's Space Program: An Overview
The People’s Republic of China successfully completed its second human spaceflight mission on October 17, 2005. China is only the third country, after Russia and the United States, able to launch people into space. Its first human spaceflight was in 2003 when a single astronaut, or “taikonaut,” made a flight lasting slightly less than a day. The 2005 flight lasted five days, and involved two taikonauts. As the United States embarks upon President Bush’s “Vision for Space Exploration” to return astronauts to the Moon by 2020 and someday send them to Mars, some may view China’s entrance into the human exploration of space as a competitive threat, while others may view China as a potential partner.
Date:
October 18, 2005
Creator:
Smith, Marcia S.
Object Type:
Report
System:
The UNT Digital Library
Development of a Microchannel In Situ Propellant Production System
An in situ propellant production (ISPP) plant on future Mars robotic missions can produce oxygen (O2) and methane (CH4) that can be used for propellant for the return voyage. By producing propellants from Mars atmospheric carbon dioxide (CO2) and hydrogen (H2) brought from Earth, the initial mass launched in low Earth orbit can be reduced by 20% to 45%, as compared to carrying all of the propellant for a round-trip mission to the Mars surface from Earth. Pacific Northwest National Laboratory used microchannel architecture to develop a Mars-based In Situ Propellant Production (ISPP) system. This three year research and development effort focused on process intensification and system miniaturization of three primary subsystems: a thermochemical compressor, catalytic reactors, and components for separating gas phases from liquid phases. These systems were designed based on a robotic direct return mission scenario, but can be scaled up to human flight missions by simply numbering up the microchannel devices. The thermochemical compression was developed both using absorption and adsorption. A multichannel adsorption system was designed to meet the full-scale CO2 collection requirements using temperature swing adsorption. Each stage is designed to achieve a 10x compression of CO2. A compression ratio to collect Martian atmospheric CO2 …
Date:
September 1, 2005
Creator:
Brooks, Kriston P.; Rassat, Scot D. & TeGrotenhuis, Ward E.
Object Type:
Report
System:
The UNT Digital Library
VISTA -- A Vehicle for Interplanetary Space Transport Application Powered by Inertial Confinement Fusion
Inertial Confinement Fusion (ICF) is an ideal technology to power self-contained single-stage piloted (manned) spacecraft within the solar system because of its inherently high power/mass ratios and high specific impulses (i.e., high exhaust velocities). These technological advantages are retained when ICF is utilized with a magnetic thrust chamber, which avoids the plasma thermalization and resultant degradation of specific impulse that are unavoidable with the use of mechanical thrust chambers. We started with Rod Hyde's 1983 description of an ICF-powered engine concept using a magnetic thrust chamber, and conducted a more detailed systems study to develop a viable, realistic, and defensible spacecraft concept based on ICF technology projected to be available in the first half of the 21st century. The results include an entirely new conical spacecraft conceptual design utilizing near-existing radiator technology. We describe the various vehicle systems for this new concept, estimate the missions performance capabilities for general missions to the planets within the solar system, and describe in detail the performance for the baseline mission of a piloted roundtrip to Mars with a 100-ton payload. For this mission, we show that roundtrips totaling {ge}145 days are possible with advanced DT fusion technology and a total (wet) spacecraft mass …
Date:
March 31, 2005
Creator:
Orth, C D
Object Type:
Report
System:
The UNT Digital Library
Space Shuttle: Actions Needed to Better Position NASA to Sustain Its Workforce Through Retirement
A letter report issued by the Government Accountability Office with an abstract that begins "The President's vision for space exploration (Vision) directs the National Aeronautics and Space Administration (NASA) to retire the space shuttle following completion of the International Space Station, planned for the end of the decade. The retirement process will last several years and impact thousands of critically skilled NASA civil service and contractor employees that support the program. Key to implementing the Vision is NASA's ability to sustain this workforce to support safe space shuttle operations through retirement. Because of the potential workforce issues that could affect the safety and effectiveness of operations through the space shuttle's retirement, GAO was asked to identify (1) the progress of efforts to develop a strategy for sustaining the space shuttle workforce through retirement and (2) factors that may have impeded these efforts."
Date:
March 9, 2005
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
NASA: Implementing a Knowledge-Based Acquisition Framework Could Lead to Better Investment Decisions and Project Outcomes
A letter report issued by the Government Accountability Office with an abstract that begins "The National Aeronautics and Space Administration (NASA) plans to spend over $100 billion on capabilities and technologies to achieve the initial goals of the President's 2004 Vision for Space Exploration. In the past, NASA has had difficulty meeting cost, schedule, and performance objectives for some of its projects because it failed to adequately define project requirements and quantify resources. NASA will be further challenged by a constrained federal budget and a shrinking experienced NASA workforce. To help face these challenges and manage projects with greater efficiency and accountability, NASA recently updated its program and project management policy and is developing an agencywide systems engineering policy. GAO has issued a series of reports on the importance of obtaining critical information and knowledge at key junctures in major system acquisitions to help meet cost and schedule objectives. This report (1) evaluates whether NASA's policy supports a knowledge-based acquisition approach and (2) describes how NASA centers are implementing the agency's acquisition policies and guidance."
Date:
December 21, 2005
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
The National Aeronautics and Space Administration’s FY2006 Budget Request: Description, Analysis, and Issues for Congress
For FY2006, the National Aeronautics and Space Administration (NASA) is requesting $16.456 billion. That amount is a 2.4% increase over the $16.070 billion (adjusted for the rescission) appropriated in the FY2005 Consolidated Appropriations Act (P.L. 108-447). NASA also received a supplemental of $126 million for hurricane relief, for a total FY2005 appropriated level of $16.196 billion. The FY2006 request is 1.6% above that total amount. By comparison, last year the White House projected that NASA’s budget would increase by 4.7%. NASA submitted a FY2006 budget amendment on July 15; total funding for the agency did not change.
Date:
August 1, 2005
Creator:
Smith, Marcia S. & Morgan, Daniel
Object Type:
Report
System:
The UNT Digital Library
U.S. Space Programs: Civilian, Military, and Commercial
None
Date:
May 24, 2005
Creator:
Smith, Marcia S.
Object Type:
Report
System:
The UNT Digital Library
U.S. Space Programs: Civilian, Military, and Commercial
None
Date:
July 21, 2005
Creator:
Smith, Marcia S.
Object Type:
Report
System:
The UNT Digital Library
U.S. Space Programs: Civilian, Military, and Commercial
None
Date:
August 5, 2005
Creator:
Smith, Marcia S.
Object Type:
Report
System:
The UNT Digital Library
The National Aeronautics and Space Administration's FY2006 Budget Request: Description, Analysis, and Issues for Congress
None
Date:
November 17, 2005
Creator:
Smith, Marcia S. & Morgan, Daniel
Object Type:
Report
System:
The UNT Digital Library
U.S. Space Programs: Civilian, Military, and Commercial
None
Date:
February 28, 2005
Creator:
Smith, Marcia S.
Object Type:
Report
System:
The UNT Digital Library
U.S. Space Programs: Civilian, Military, and Commercial
The 109th Congress is addressing a broad range of civilian, military, and commercial space issues. The National Aeronautics and Space Administration (NASA) conducts the most visible space activities. For FY2005, NASA received a total of $16.2 billion. The FY2006the request is $16.46 billion; the conference report on the FY2006 appropriations bill that includes NASA (H.R. 2862) approves that amount.
Date:
November 17, 2005
Creator:
Smith, Marcia S.
Object Type:
Report
System:
The UNT Digital Library
U.S. Space Programs: Civilian, Military, and Commercial
This report includes information regarding various United States space programs.
Date:
December 5, 2005
Creator:
Smith, Marcia S.
Object Type:
Report
System:
The UNT Digital Library