| Full Spectrum Operations: A Running Start |
31-Mar-2009 |
64 pages |
| Authors:
James A Howard; TEXAS UNIV AT AUSTIN INST FOR ADVANCED TECHNOLOGY
|
 | Major combat operations (MCO) exacerbate conditions for instability. The good will and gratitude expected after liberating a population will not last unless U.S. forces take steps to relieve the people of those destabilizing conditions. These include, in addition to lack of security, loss of power, inadequate potable water, poor waste management, food shortages, and job loss. In the aftermath of MCO in both Iraq and Afghanistan, opportunities were missed to ... |
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| Acoustic Excitation of Liquid Fuel Droplets and Coaxial Jets |
Jan-2009 |
271 pages |
| Authors:
Juan I Rodriguez; AIR FORCE RESEARCH LAB EDWARDS AFB CA PROPULSION DIRECTORATE
|
| This experimental study focuses on two important problems relevant to acoustic coupling with condensed phase transport processes, with special relevance to liquid rocket engine and airbreathing engine combustion instabilities. The first part of this dissertation describes droplet combustion characteristics of various fuels during exposure to external acoustical perturbations. Methanol, ethanol, a liquid synthetic fuel derived from coal gasification via the Fischer-Tropsch process, and a blend of aviation fuel and the ... |
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| Lagrangian Observations of Nonlinear Internal Waves and Turbulence Mixing in Luzon Strait and South China Sea and Internal Wave in the Vicinity of the Kuroshio Path |
30-Dec-2008 |
22 pages |
| Authors:
Ren-Chieh Lien; Eric A D'Asaro; WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB
|
| Two related projects were funded sequentially under the same grant number. The first was to conduct an experiment near DongSha Island, using the Lagrangian float, to understand the energy cascade from barotropic tides, internal tides, nonlinear internal waves, to turbulence mixing in the northern South China Sea. Results are reported. The second was to analyze observations of data taken in the vicinity of the Kuroshio path from Luzon Strait to ... |
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| The SPRING Nanoenergetics Hub at UTD |
Dec-2008 |
99 pages |
| Authors:
John Ferraris; TEXAS UNIV AT DALLAS
|
| The objective of this proposed research, to be carried out as part of the Strategic Partnership for Research in Nanotechnology, or SPRING (in collaboration with AFRL/MLMT, Rice University, the University of Texas, Arlington and the University of Texas, Austin), is the synthesis and processing of advanced nanostructured materials, the structure and property characterization needed for materials optimization, the fabrication of sophisticated structures, and device testing in the areas of energy ... |
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| On-Site Field-Feeding Waste to Energy Converter |
Dec-2008 |
9 pages |
| Authors:
L Knowlton; D Pickard; J Diebold; K Lasnik; A Lilley; K Browne; ARMY NATICK SOLDIER RESEARCH DEVELOPMENT AND ENGINEERING CENTER MA
|
| Military field-feeding generates tons of solid waste that is a costly logistic burden, requiring personnel, vehicles, and fuel that could otherwise be used for the warfighting mission. Such waste also represents a source of chemical energy sufficient to power a field kitchen and/or other force sustainment systems. This research investigated the concept of employing an air-blown downdraft biomass gasifier to convert foodservice waste into useful energy. A prototype system was ... |
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| Piezoelectric Energy for Soldier Systems |
Dec-2008 |
6 pages |
| Authors:
Christpher A Howells; ARMY COMMUNICATIONS-ELECTRONICS RESEARCH DEVELOPMENT AND ENGINEERING CENTER FORT BELVOIR VA
|
| Piezoelectric materials can be used to convert oscillatory mechanical energy into electrical energy. This technology, together with innovative mechanical coupling designs, can form the basis for an energy harvesting solution for military and commercial systems. The US Army-CERDEC at Ft. Belvoir, VA and Continuum Photonics, Inc. in Billerica, MA completed a three year Science & Technology Objective (STO) research effort that focused on harvesting energy from physical exertion. The effort ... |
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| Liquid Tin Anode SOFC JP-8 Start-up |
Oct-2008 |
26 pages |
| Authors:
Thomas Tao; Jeff Bentley; Mark Koslowske; Linda Bateman; Mike Slaney; Zena Uzep; William McPhee; CELLTECH POWER LLC WESTBOROUGH MA
|
| This program demonstrated the feasibility to use CellTech Power's Gen3.1 Liquid Tin Anode Solid Oxide Fuel Cell (LTA-SOFC) design exclusively with JP-8 as a sole fuel source during start up and cool down. Previous tests utilized reducing gases such as hydrogen and H2/Ar during start up and cool down for protection of tin anode and non-precious metal based current collectors. This program successfully eliminated the need of additional reducing gases ... |
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| Symposium U: Thermoelectric Power Generation. Held in Boston, Massachusetts on November 26-29, 2007 |
01-Apr-2008 |
29 pages |
| Authors:
Ryoji Funahashi; Jihui Yang; Timothy P Hogan; Terry M Tritt; MATERIALS RESEARCH SOCIETY WARRENDALE PA
|
| Symposium U brought together scientists and engineers working on high efficiency thermal to electric energy conversion technologies to discuss the most recent progress in materials, current theoretical and experimental trends, characterization, and device fabrication. The symposium was designed to emphasize the multi-disciplinary nature (materials science, physics, chemistry and engineering) of the research needed to advance the state-of-the-art technology. Over 175 abstracts were received. This was more than any of the ... |
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| Very High Performance Organic Photonic Devices |
15 JAN 2008 |
82 pages |
| Authors:
Stephen Forrest; PRINCETON UNIV NJ DEPT OF ELECTRICAL ENGINEERING
|
| The objective was to demonstrate very high efficiency, low cost organic solar cells on flexible substrates based on vapor-deposited thin film organic semiconductors. Our goal is to obtain solar power conversion efficiencies of >10% -- a value without precedent in over 30 years of science and engineering targeted at achieving practical organic solar energy conversion devices. A further objective is to demonstrate an electrically pumped organic thin film laser, again ... |
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| Nellis Air Force Base, Nevada Photovoltaic Project |
DEC 2007 |
241 pages |
| Authors:
Curtis D. Henley; Shaun C. Hunt; Darius A. Phillips; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The objective of this Joint Applied Project was to analyze the feasibility for production of renewable energy on DoD installations and focus on renewable energy initiatives undertaken at Nellis AFB, NV. This project examines the necessary criteria and preconditions for consideration of renewable energy production on DoD installations and how the Government establishes contracting devices with local power generating companies. This project analyzes the Nellis AFB initiative as a model ... |
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| Perspective on One Decade of Laser Propulsion Research at the Air Force Research Laboratory (Preprint) |
28 NOV 2007 |
13 pages |
| Authors:
C. W. Larson; AIR FORCE RESEARCH LAB EDWARDS AFB CA PROPULSION DIRECTORATE
|
| The Air Force Laser Propulsion Program spanned nearly 10-years and included about 35-weeks of experimental research with the Pulsed Laser Vulnerability Test System of the High Energy Laser Systems Test Facility at White Sands Missile Range, New Mexico, WSMR/HELSTF/PLVTS. PLVTS is a pulsed CO2 laser that produces up to 10 kW of power in -10 cm2 spot at wavelength of 10.6 microns. The laser is capable of a pulse repetition ... |
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| Direct Carbon Fuel Cells: Converting Waste to Electricity |
SEP 2007 |
54 pages |
| Authors:
Ronald H. Wolk; Scott Lux; Stacy Gelber; Franklin H. Holcomb; ENGINEER RESEARCH AND DEVELOPMENT CENTER CHAMPAIGN IL CONSTRUCTION ENGINEERING RESEARCH LAB
|
| The U.S. Army has policies to minimize production of waste materials, maximize recycle of waste materials, and minimize energy consumption on its installations. A beneficial way to implement these policies is to convert paper, wood, vegetation, and Municipal Solid Waste (MSW) fractions into a carbon-rich feed stock by pyrolysis to fuel Direct Carbon Fuel Cells (DCFCs). DCFCs potentially offer a unique approach for the direct conversion of biomass-derived, carbon-rich solid ... |
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| Vertical Alignment of Single-Walled Carbon Nanotubes on Nanostructure Fabricated by Atomic Force Microscope |
30 MAR 2007 |
46 pages |
| Authors:
Haiwon Lee; HANYANG UNIV SEOUL (KOREA SOUTH) DEPT OF CHEMISTRY
|
| This project focused on the behavior of single-wall carbon nanotubes (SWCNTs) in the electrophoresis cells and aligned growth of SWCNTs by thermal chemical vapor deposition on selectively deposited metallic nanoparticles. Field emission characteristics of vertically aligned SWCNTs films were also studied. |
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| Cobalt Doping of Semiconducting Boron Carbide Using Cobaltocene |
MAR 2007 |
100 pages |
| Authors:
Lonnie Carlson; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH
|
| The decomposition of cobaltocene and metacarborane (closo-1,7-dicarba-decaborane) under low energy electron irradiation at about 200 K results in a material with the Fermi level closer to the valence band than the material resulting from the decomposition of metacarborane alone. This indicates that cobaltocene provides a relatively p-type dopant as seen in ultraviolet photoemission spectroscopy/inverse photoemission spectroscopy. Upon warming to room temperature, however, the Fermi level shifts towards the conduction band, ... |
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| Parametric Study of Beta-Endpoint Energy in Direct Energy Converters |
JAN 2007 |
62 pages |
| Authors:
Kara Blaine; Marc Litz; ARMY RESEARCH LAB ADELPHI MD
|
| Several solid-state materials have been identified for potential use as direct-energy-converter (DEC) for isotope-based batteries. Numerical simulations, using a nuclear scattering code (MCNPX), have been performed to determine the electron energy deposited in the material. Two different parametric studies were performed 1) varying Beta-endpoint energy of a spectrum illuminating layers of silicon-carbide (SiC), 2) the other varying the material layers while keeping the Beta-endpoint energy constant. The goal of the ... |
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| Model of High-Energy-Density Battery Based on SiC Schottky Diodes |
OCT 2006 |
20 pages |
| Authors:
Yves Ngu; Marc Litz; Bruce Geil; ARMY RESEARCH LAB ADELPHI MD SENSORS AND ELECTRON DEVICES DIRECTORATE
|
| Silicon carbide (SiC) diodes are being investigated as direct energy converters (DECs) for use in small, long-lived nuclear power sources for unattended sensors. Voltage and current measurements on Schottky diodes fabricated from both Si and SiC result in typical efficiencies of 5 to 15%. A drift-diffusion model has been developed to predict the output and to help us better understand the radiation-induced current that results. This report describes the initial ... |
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| Optimized Power Generation and Distribution Unit for Mobile Applications |
01-Sep-2006 |
136 pages |
| Authors:
Andrew Alleyne; ILLINOIS UNIV AT URBANA-CHAMAPIGN
|
| This research project focused on determining optimal power generation and distribution within a mobile human-scale power system. The intended application was for a human scale exoskeleton, in particular underwater applications. However, the tools and techniques are applicable for a broad range of mobile systems that carry a finite energy supply and need to optimize both the system performance and system efficiency. A wide survey of appropriate energy storage and power ... |
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| Survey of Current and Next Generation Space Power Technologies |
26 JUN 2006 |
17 pages |
| Authors:
B. Lanning; D. Martin; ITN ENERGY SYSTEMS INC LITTLETON CO
|
| As part of an ongoing effort to improve responsiveness of power systems to meet future mission needs in space, an independent survey of conventional and emerging power technology options has been conducted. In this paper, all power technology options, both generation and storage, have been organized, using figures of merit relevant to space systems, to provide a basis for more effectively matching power technology options to future mission requirements. The ... |
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| Waste-to-Energy ECIP (Energy Conservation Investment Program) Project. Volume 1: An Analysis of Hydrogen Infrastructure Fuel Cell Technology |
APR 2006 |
36 pages |
| Authors:
Franklin H. Holcomb; Roch A. Ducey; Byung J. Kim; Gonzalo Perez; Robert Neathammer; Fred Louis; ENGINEER RESEARCH AND DEVELOPMENT CENTER CHAMPAIGN IL CONSTRUCTION ENGINEERING RESEARCH LAB
|
| Volume I of this work represents a preliminary analysis of the economics from an anaerobic sludge digester Wastewater Treatment Plant (WWTP) at a military installation integrated with a fuel cell with hydrogen production capabilities. The waste-to-energy, hydrogen production/infrastructure development, fuel cell system (WTE-H2-FC) was submitted for FY06 Energy Conservation Investment Program (ECIP) funding based on the estimated Savings to Investment Ratio (SIR) range of 1.5 - 2, and an estimated ... |
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| Future Fuels |
APR 2006 |
80 pages |
| Authors:
A. M. Andrews; W. Bryzik; R. Carlin; J. M. Feigley; III Harrison W. E.; D. J. Katz; J. Y. Rodriguez; R. L. Snead; J. C. Sommerer; J. T. Tozzi; NAVAL RESEARCH ADVISORY COMMITTEE ARLINGTON VA
|
| The challenge "Unleash us from the tether of fuel," came from Lt. Gen. James Mattis, USMC, Commanding General of Marine Corps Combat Development Command (MCCDC), and his Operation Iraqi Freedom (OIF) experience as CG of First Marine Division. As a near-term response, the Panel determined that the fuel tether remains, but found a way to lengthen it (Hybrid Electric Vehicle technology) and untangle it (dynamic fuel management). The Marine Corps ... |
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| Ablation Study in a Capillary Sustained Discharge |
2006 |
11 pages |
| Authors:
Michael Keidar; Iain D. Boyd; Anthony Williams; Richard Beyer; MICHIGAN UNIV ANN ARBOR DEPT OF AEROSPACE ENGINEERING
|
| Electrothermal-chemical (ETC) ignition systems have been demonstrated in gun systems to provide desirable characteristics including reproducible shorter ignition delays. The optimum combination of capillary tube and fuse wire properties has not been identified yet. We present a combined theoretical and experimental study of the capillary discharge with an aim to develop a capillary plasma source with efficient energy conversion. The major emphasis in the present capillary discharge model is the ... |
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| Future Fuels |
04 OCT 2005 |
37 pages |
| Authors:
NAVAL RESEARCH ADVISORY COMMITTEE ARLINGTON VA
|
| At the briefing, the following topics were discussed: identify, review and assess technolgies for reducing fuel consumption, including alternative propulsion technologies. Recommend a strategy to leverage the coo-perative research among DoD, DoE and industry. |
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| Meso and Micro Scale Propulsion Concepts for Small Spacecraft |
14 JUN 2005 |
26 pages |
| Authors:
R. A. Yetter; V. Yang; I. A. Aksay; F. L. Dryer; PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF MECHANICAL AND NUCLEAR ENGINEERING
|
| A meso/micro scale liquid propellant thruster is being developed for small spacecraft. In this thruster, the liquid propellant was injected directly into the chamber tangentially along the combustor wall. Heat feedback from the flame, once ignited, decomposed and gasified the liquid propellant. The gasification process of the propellant produced a voflex flow in the combustor, which stabilized the gas- phase flame. Modeling studies with gas-phase injection of reactants have shown ... |
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| A Study Examining Photovoltaic (PV) Solar Power as an Alternative for the Rebuilding of the Iraqi Electrical Power Generation Infrastructure |
JUN 2005 |
187 pages |
| Authors:
Curtis Austin; Ralph Borja; Jeffery Phillips; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| This project examined the cost and feasibility of using photovoltaic solar power to assist in the rebuilding of the Iraqi electrical infrastructure. The report covers available solar equipment and technologies coupled with requirements for operation, installation, and maintenance. The report begins with an analysis of the current state of the Iraqi infrastructure, including coalition efforts to begin the reconstruction process, U.S. engineers' actions upon entering Iraq, the increased need for ... |
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| Renewable Energy Analysis For Strategic Responsiveness 3 (REASR 3) |
JUN 2005 |
65 pages |
| Authors:
Hugh W. Jones; CENTER FOR ARMY ANALYSIS FORT BELVOIR VA
|
| Army installations require electric power to perform the missions assigned to them whether or not the power is used at the main post or at remote locations at the installation. Providing electric power to the main post is accomplished through the local electric company. However, for remote locations the usual source of electric power is diesel generated 1.5 kW to 200 kW power from generators using diesel fuel as the ... |
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| Comparison of Ablation Performance in Laser Lightcraft and Standardized Mini-Thruster |
18 MAY 2005 |
43 pages |
| Authors:
Sean D. Knecht; C. W. Larson; Jr Mead Franklin B.; AIR FORCE RESEARCH LAB EDWARDS AFB CA PROPULSION DIRECTORATE
|
| On our 31st trip to the laser facility at WSMR we carried out experiments on laser ablation of black and white Delrin [also called polyoxymethylene, polyformaldehyde, (HCHO)x]. Mass ablation and thrust generation (Impulse) were accurately measured as a function of input laser energy in one shot experiments. The efficiency of conversion of laser energy to jet kinetic energy depended on the geometry of the energy absorption/conversion zone. The most ideal ... |
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| Recent Laser Propulsion Results from WSMR/HELSTF/PLVTS |
MAY 2005 |
43 pages |
| Authors:
Bill Larson; AIR FORCE RESEARCH LAB EDWARDS AFB CA PROPULSION DIRECTORATE
|
| On our 31st trip to the laser facility at WSMR we carried out experiments on laser ablation of black and white Delrin ALSO CALLED POLYOXYMETHYLENE, POLYFORMALDEHYDE, (HCHO)x. Mass ablation and thrust generation (impulse) were accurately measured as a function of input laser energy in one shot experiments. The efficiency of conversion of laser energy to jet kinetic energy depended on the geometry of the energy absorption/conversion zone. The most ideal ... |
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| Combat Vehicle Engine Selection Methodology Based on Vehicle Integration Considerations |
13 APR 2005 |
19 pages |
| Authors:
Charles Raffa; Ernest Schwarz; John Tasdemir; TACOM RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI
|
| These briefing charts show the definition of the propulsion system for military applications, advanced integrated propulsion system (AIPS) power pack, assessment of the overall system power density potential: cooling system and parasitic fan power sizing, inlet and exhaust system impact, mission fuel determination and propulsion system volume estimates. |
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| Bioinspired Materials for Compact Power Structures |
09 FEB 2005 |
20 pages |
| Authors:
Chad A. Mirkin; NORTHWESTERN UNIV EVANSTON IL DEPT OF CHEMISTRY
|
| This report accounts for the major scientific accomplishments of the above project from May 2002 to November 2004. The focus of this proposal was the development of methods and techniques for the assembly of 3-D nanoparticle lattices using a variety of nanoparticles and novel DNA-driven assembly techniques. Microorganisms and diatoms were used as templates for the hierarchical assembly of ordered 3-D nanostructures, and DNA-linked nanoparticles were shown to form organized ... |
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| Harvesting Electric Energy During Walking With a Backpack: Physiological, Ergonomic, Biomechanical, and Electromechanical Materials, Devices, and System Considerations |
JAN 2005 |
16 pages |
| Authors:
Qiming Zhang; Heath Hogmann; PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF ELECTRICAL ENGINEERING
|
| The objective of this program is to investigate approaches which make use of several classes of electroactive materials developed recently for harvesting electric energy during walking. These newly developed electroactive materials including the electrostrictive PVDF based polymers and piezoelectric relaxor single crystals have shown order of magnitude improvement in terms of the elastic energy density in comparison with the traditional piezoelectric materials and much improved the electromechanical coupling factors. Furthermore, ... |
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| Ubiquitous Power; Opportunities and Benefits of the Photo-Voltaic Power Converter for the Individual Fighter |
DEC 2004 |
55 pages |
| Authors:
John D. Stout; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The success of every military throughout history has been its ability to move, shoot, and communicate, all of which require power. In the modern era, technology has afforded soldiers with equipment that greatly enhances maneuverability through state-of-the-art communications equipment. Such equipment creates significant power needs that are currently met through the use of expensive and heavy-to-carry disposable and rechargeable batteries. The limitation for improved complex communications, as well as weapon ... |
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| How Directed Energy Benefits the Army |
DEC 2004 |
6 pages |
| Authors:
J. K. Souder; D. B. Langille; ARMY AVIATION AND MISSILE COMMAND REDSTONE ARSENAL AL SHORT- RANGE AIR DEFENSE(SHORAD) PROJECT OFFICE (PO)
|
| Directed energy, primarily through use of high-energy lasers (HELs), has already demonstrated significant capability to meet Army needs, and current developments indicate there are future applications for HELs in numerous and varied mission areas. HELs convert energy from chemical or electrical sources, for example, into intense, focused radiation that when directed onto targets will render them incapable of continuing their intended mission. There are multiple mechanisms for causing a kill. ... |
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| Central Heating and Power Plant Conversion at Fort Wainwright, AK: Heating Only with Backup Generation Option |
NOV 2004 |
110 pages |
| Authors:
John L. Vavrin; Noel L. Potts; John Westerman; Robert Lorand; Charles Schmidt; Raymond Heintel; Michael P. Kemme; ENGINEER RESEARCH AND DEVELOPMENT CENTER CHAMPAIGN IL CONSTRUCTION ENGINEERING RESEARCH LAB
|
| The Fort Wainwright military community has a critical need to establish its power and heating requirements to successfully complete a series of planned capital improvements. The CHPP upgrade coincides with an expansion of FWA's mission within the next 5 years. |
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| Hybrid Fiber-Bulk Pulsed Erbium Laser |
18 OCT 2004 |
62 pages |
| Authors:
William A. Clarkson; P. J. Jander; M. L. Laroche; J. K. Sahu; SOUTHAMPTON UNIV (UNITED KINGDOM) OPTOELECTRONICS RESEARCH CENTRE
|
| This report results from a contract tasking University of Southampton as follows: The contractor will investigate the development of a novel eye-safe 1.6 micrometer laser source pumped by a high-power fiber laser co-doped with Erbium and Ytterbium to produce a highly efficient eye-safe source for use in laser radars, and atmospheric and environmental monitoring. |
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| Materials for Energy Conversion and Environmental Protection |
13 OCT 2004 |
39 pages |
| Authors:
R. P. Chang; Jennifer Moncel; NORTHWESTERN UNIV EVANSTON IL MATERIALS RESEARCH CENTER
|
| The Pan-American Advanced Studies Institute (PASI) on Materials for Energy Conversion and Environmental Protection was held October 20-29, 2003 in Rio de Janeiro, Brazil. The event welcomed twenty distinguished lecturers and forty graduate and post-doctoral students, half from the US (including Puerto Rico) and half from outside the US (Argentina, Bolivia, Brazil, Canada, Chile, Mexico, Peru, Panama, and Venezuela.) Eight Pan-American student research groups were formed, each with a clearly ... |
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| Ionic Liquids as a Medium for Ionic Chain Polymerizations: An Environmentally Responsible Approach to Macromolecular Synthesis with Controlled Architecture |
16 SEP 2004 |
9 pages |
| Authors:
Stephen Gross; CREIGHTON UNIV OMAHA NE
|
| This Short Term Innovation Research proposal set out to explore the possible advantages of using ionic liquids as a medium for ionic polymerizations. The first anionic, living polymerization in an ionic liquid medium was accomplished. Reaction conditions and process have been established to pursue the remaining proposed work in terms of controlling block copolymer composition and the effect of chiral ionic liquids on tacticity of polymerization. Observation of polymerizations in ... |
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| Application of Thermoelectric Devices to Fuel Cell Power Generation: Demonstration and Evaluation |
SEP 2004 |
145 pages |
| Authors:
John Huston; Chris Wyatt; Chris Nichols; Michael J. Binder; Franklin H. Holcomb; ENGINEER RESEARCH AND DEVELOPMENT CENTER CHAMPAIGN IL CONSTRUCTION ENGINEERING RESEARCH LAB
|
| The Department of Defense (DOD) is concerned with reliable and cost- effective power generation of on-site power generators as well as minimizing the environment impact of these generators. Thermoelectric (TE) devices offer the opportunity to generate power without additional fuels, without moving parts, and with negligible environmental impact. An electrical energy conversion efficiency of approximately 15% would be required to obtain an acceptable return on investment for TE devices. A ... |
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| Model and Subcomponent Development for a Pulse-Combustor-Driven Microgenerator |
31 AUG 2004 |
76 pages |
| Authors:
Ben T. Zinn; Ari Glezer; Mark G. Allen; Suresh Menon; David Taylor; GEORGIA INST OF TECH ATLANTA
|
| This project focused on an investigation of the feasibility of pulse- combustion-based micro heat engines for electrical power generation. The micro heat engines to be studied are based on a reciprocating free piston that is driven by a periodic pulse combustion process, resulting in high levels of integration of the mechanical and electrical functionality of the engine (i.e., the same piston performs both the fuel-to-mechanical energy conversion as well as ... |
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| Military Solid Waste Reformer: A Pilot Study to Convert Military Waste to Logistics Fuel in the Field |
AUG 2004 |
72 pages |
| Authors:
Duane B. Myers; Gregory D. Ariff; John S. Lettow; DIRECTED TECHNOLOGIES INC ARLINGTON VA
|
| The Military Solid Waste Reformer project was a laboratory validation of conventional gasification and/or pyrolysis processes for the conversion of military field waste to liquid fuels in the field. Our approach to solve the military waste disposal and fuel supply problems was to convert the waste to a liquid fuel that can be used in place of or blended with conventional logistic fuels, particularly JP-8. Thus the logistics, fiscal, and ... |
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| Force Provider Solid Waste Characterization Study |
AUG 2004 |
136 pages |
| Authors:
W. H. Ruppert; T. A. Bush; D. P. Verdonik; J. A. Geiman; M. A. Harrison; HUGHES ASSOCIATES INC BALTIMORE MD
|
| This report examines the solid waste produced by a Force Provider base camp to evaluate the feasibility of waste reduction through an onsite waste-to-energy converter (WEC) and/or composter. For a five-day period in June 2000, the solid waste generated by soldiers at the Force Provider Training Module in Fort Polk, Louisiana, was quantified and characterized. The waste was categorized by type (e.g., kitchen waste, trash, cooking oil) and composition (e.g., ... |
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| Properties of Laser Ablation Products of Delrin with CO2 Laser |
JUL 2004 |
79 pages |
| Authors:
Wolfgang O. Schall; Hans-Albert Eckel; Jochen Tegel; Frank Waiblinger; Sebastian Walther; GERMAN AEROSPACE CENTER (DLR) STUTTGART(GERMANY) INST OF TECHNICAL PHYSICS
|
| A requirement for efficient pulsed laser propulsion from ground to LEO is the achievement of a specific impulse of up to 800's at a jet efficiency of at least 50%. With classical polymers like Delrin or POM these numbers cannot be obtained. The suggestion to use polymers with included metal powder for a better deposition of the laser energy per unit volume and thus the achievement of a higher jet ... |
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| Effects of Ambient Gas Pressure on the Breakup of Sprays in Like-Doublet and Swirl Coaxial Injectors |
22 JUN 2004 |
35 pages |
| Authors:
Youngbin Yoon; In-Seuk Jeung; SEOUL NATIONAL UNIV (REPUBLIC OF KOREA)
|
| The spray characteristics of swirl coaxial injectors are much influenced by the interaction position of propellants in the recess. Two regimes are found: outer mixing injection and emulsion injection. In the case of single inner oxidizer spray, the spray angle and breakup length decrease as the ambient chamber pressure increases. In the case of coaxial spray with recess, the effects of ambient density on the spray characteristics are not significant ... |
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| Combat Vehicle Engine Selection Methodology Based On Vehicle Intergration Consideration |
01 JUN 2004 |
9 pages |
| Authors:
Charles Raffa; Ernest Schwarz; John Tasdemir; ARMY TANK-AUTOMOTIVE COMMAND WARREN MI
|
| Past experience has shown that the power density of an engine itself is not a sufficient guide to determine whether it will meet the power density needs of the intended combat vehicle application. The real need is for the complete propulsion system to be power dense. Here the definition of the propulsion system includes the engine, transmission, cooling system, air filtration system, intake and exhaust ducting, controls, accessories, batteries, fuel ... |
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| Properties of Laser Ablation Products of Delrin with CO2 Laser (CD-ROM) |
01 MAY 2004 |
|
| Authors:
Wolfgang O. Schall; Hans-Albert Eckel; Jochen Tegel; Frank Waiblinger; Sebastian Walther; GERMAN AEROSPACE CENTER (DLR) STUTTGART(GERMANY) INST OF TECHNICAL PHYSICS
|
 | ELECTRONIC FILE CHARACTERISTICS: 8 files; .PPT, .XLS, .PDF, .DOC, and Audio Video Interleave (.AVI). PHYSICAL DESCRIPTION: 1 computer laser optical disc (CD-ROM); 4 3/4 in.; 50.3 MB. SYSTEMS DETAIL NOTE: ABSTRACT: This report results from a contract tasking German Aerospace Center (DLR) as follows: The Grantee will develop an understanding of the parameters that control the specific energy (e.g. temperature) of gases that are produced by ablation of a ... |
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| Effect of Ultraviolet Light Irradiation on Thermionic Energy Converter |
07 APR 2004 |
2 pages |
| Authors:
Norio Tsuda; Jun Yamada; AICHI INST OF TECH TOYOTA (JAPAN)
|
| The laser light is irradiated to the converter and the output current characteristics are studied. The output current may be mainly produced by light of ultraviolet region when the sun light is irradiated to the converter. |
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| Science and Technology Text Mining: Electric Power Sources |
APR 2004 |
80 pages |
| Authors:
Ronald N. Kostoff; Rene Tshiteya; Kirstin M. Pfeil; James A. Humenik; George Karypis; OFFICE OF NAVAL RESEARCH ARLINGTON VA
|
| Database Tomography (DT) is a textual database analysis system consisting of two major components: 1) algorithms for extracting multi-word phrase frequencies and phrase proximities (physical closeness of the multi-word technical phrases) from any type of large textual database, to augment 2) interpretative capabilities of the expert human analyst. DT was used to derive technical intelligence from a Power Sources database derived from the Science Citation Index (SCI). Phrase frequency analysis ... |
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| Operational Impacts of the Aegis Cruiser Smartship System |
MAR 2004 |
12 pages |
| Authors:
Jeff Fullerton; Marc Scotchlas; Thad Smith; Adam S. Freedner; NAVAL SEA SYSTEMS COMMAND WASHINGTON DC
|
| The Chief of Naval Operations guidance over the past few years has challenged the fleet with finding ways to increase efficiencies while maintaining overall readiness as a highly effective force. In addition, today's ships must be continuously ready and surge capable in accordance with the Fleet Response Plan. One way to meet these goals is to leverage technologies that will optimize ship manning and streamline shipboard training. The Smartship installation ... |
|
| Energy-Saving and Process Technologies Development at ORNL |
26 FEB 2004 |
43 pages |
| Authors:
Michael MacDonald; OAK RIDGE NATIONAL LAB TN ENGINEERING TECHNOLOGY DIV
|
| Overview of energy-saving and process technologies being developed at Oak Ridge National Laboratory. |
|
| Energy Assessment Strategy and Energy Concepts for Industrial Facilities |
25 FEB 2004 |
13 pages |
| Authors:
Bernd Leven; Christoph Weber; STUTTGART UNIV (GERMANY F R)
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| SUMMARY: (1) Energy Concepts for Enterprises: * Cover the procurement, conversion, distribution and utilization of energy; * Based on a detailed analysis of the initial situation and planned modifications; * Should compare different options of measures and concepts; (2) Applicable Methodologies: * Energy characteristic (on different operational level); * Sankey diagrams and load curves; (3) Standardized Procedures and Software Tools: * Can significantly reduce time and costs. |
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| Development of a Flexible Molecular Photocell With Up to 20% Conversion Efficiency |
2004 |
134 pages |
| Authors:
K. R. Thampl; M. G. Graetzel; SWISS FEDERAL INST OF TECHNOLOGY LAUSANNE (SWITZERLAND)
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| This document reports on the main activities and outputs originated under this research project over a period of 3 years. The program was targeted at first realizing a molecular photovoltaic cell based on a dye sensitized nanocrystalline semiconductor film employing a hole conductor, a conducting polymer or a polymer electrolyte reaching an AM 1.5 solar-to electric conversion efficiency of at least 2.5 %, within the first 9 months itself. This ... |
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Reports by Keyword(s)
ENERGY CONVERSION
