| Power Considerations for Micro-Autonomous Systems |
30 Jul 2012 |
32 pages |
| Authors:
Brian C Morgan; ARMY RESEARCH LAB ADELPHI MD SENSORS AND ELECTRON DEVICES DIRECTORATE
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| Hematopoiesis Primer Modeling Combined Injury |
May 2012 |
34 pages |
| Authors:
Terry C Pellmar; Glen I Reeves; APPLIED RESEARCH ASSOCIATES INC ARLINGTON VA
|
 | This report is an overview of the basic principles underlying the formation, function, and response to injury of the different elements of the hematopoietic system. The adverse effects of radiation on the hematopoietic system differ from those of thermal burn or traumatic wounding. In turn, the effects of burn injury and trauma with hemorrhage differ from one another. Accordingly, the effects of individual injurious modality on each hematopoietic element are ... |
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| Thermal to Visible Face Recognition |
Apr 2012 |
11 pages |
| Authors:
Jonghyun Choi; Shuowen Hu; S S Young; Larry S Davis; MARYLAND UNIV COLLEGE PARK
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| For nighttime surveillance applications, acquisition of visible light imagery is impractical due to the lack of illumination. Thermal imaging, which acquires mid-wave infrared or long-wave infrared radiation naturally emitted by the human body, can be utilized in low light conditions to perform surveillance tasks. Identification of individuals captured by thermal imaging would significantly enhance nighttime intelligence gathering capabilities. However, government watch lists and databases almost exclusively contain visible light face ... |
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| Neutron Detection using Amorphous Boron-Carbide Hetero-Junction Diodes |
22 Mar 2012 |
107 pages |
| Authors:
Thomas P McQuary; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
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| The high energy products of the 10B(n, alpha )7Li neutron capture reaction were explored as a means of thermal neutron detection in thin film amorphous boron carbide (alpha--B5C:Hx) on n-type silicon hetero-junction diodes. Pulse height spectroscopy was conducted on the diodes while they were subjected to a moderated plutonium-beryllium (PuBe) source. Neutron capture could not be confirmed experimentally in any of the devices tested. Device modeling was performed to investigate ... |
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| Spectral and Spatial Coherent Emission of Thermal Radiation from Metal-Semiconductor Nanostructures |
Mar 2012 |
155 pages |
| Authors:
Shane N McConnell; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
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| The spectral and spatial radiative properties of coherent thermal emission in the mid-infrared and far-infrared through the use of micro-structured and nano-structured metal-semiconductor materials were demonstrated experimentally. Using an implementation of the Rigorous Coupled Wave Analysis (RCWA) numerical technique and Computer Simulation Technology (CST) electromagnetic modeling software, two structures were designed to selectively emit at mid- and far-IR wavelengths: a one-dimensional (1-D) truncated multilayer resonator and a three-dimensional (3-D) hybrid ... |
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| Detection of Bioaerosols Using Single Particle Thermal Emission Spectroscopy (First-year Report) |
Feb 2012 |
20 pages |
| Authors:
Kristan P Gurton; Melvin Felton; Yongle Pan; ARMY RESEARCH LAB ADELPHI MD COMPUTATIONAL AND INFORMATION SCIENCES DIRECTORATE
|
| We are investigating a new type of single aerosol particle spectroscopy that is designed to identify unique and identifiable characteristic features in measured molecular emission/absorption spectra in the thermal infrared (IR) region from 3 to 12 microns. Our objective is to improve the ability to identify and distinguish mundane bioaerosols from more toxic varieties and/or species. During year 1 of a two-year study, we developed and investigated various techniques required ... |
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| Thermophotovoltaic Energy Conversion for Personal Power Sources |
Feb 2012 |
38 pages |
| Authors:
C M Waits; ARMY RESEARCH LAB ADELPHI MD SENSORS AND ELECTRON DEVICES DIRECTORATE
|
| Advancements in photovoltaic, thermal emission, and compact liquid fueled combustion sources enable thermophotovoltaic energy conversion to compete with battery and fuel technology for compact power applications. This report highlights all components of the thermal-to-electric energy conversion (TEC) system including the balance-of-plant and provides a review of the state of the art. Evaluation of each component s performance determined that a 10% efficient thermophotovoltaic power source could be realizable by integrating ... |
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| Piezoelectric, Solar and Thermal Energy Harvesting for Hybrid Low-Power Generator Systems With Thin-Film Batteries |
Jan 2012 |
14 pages |
| Authors:
P Gambier; S R Anton; N Kong; A Erturk; D J Inman; LOS ALAMOS NATIONAL LAB NM ENGINEERING INSTITUTE
|
| The harvesting of ambient energy to power small electronic components has received tremendous attention over the last decade. The research goal in this field is to enable self-powered electronic components for use particularly in wireless sensing and measurement applications. Thermal energy due to temperature gradients, solar energy and ambient vibrations constitute some of the major sources of energy that can be harvested. Researchers have presented several papers focusing on each ... |
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| The High-Energy Laser: Tomorrow's Weapon to Improve Force Protection |
Jan 2012 |
8 pages |
| Authors:
Aaron Angell; NATIONAL DEFENSE UNIV WASHINGTON DC
|
| Think about the current laser designation capability used to direct precision-guided munitions (PGMs) to destroy an enemy target. Now, imagine replacing that laser designator with a high-energy laser (HEL) weapon that emits enough thermal energy to directly render a target ineffective without using a conventional munition. |
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| Vibrational and Rotational CARS Measurements of Nitrogen in Afterglow of Streamer Discharge in Atmospheric Pressure Fuel/Air Mixtures |
Jan 2012 |
11 pages |
| Authors:
S J Pendleton; A Montello; C Carter; W Lempert; M A Gundersen; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH
|
| The use of nonequilibrium plasma generated by nanosecond discharges to ignite fuel/air mixtures, known as transient plasma ignition (TPI), has been shown to effectively reduce ignition delay and improve engine performance relative to spark ignition for combustion engines. While this method is potentially useful for many engine applications, at present the underlying physics are poorly understood. This work uses coherent anti-Stokes Raman spectroscopy (CARS) to measure the rotational and vibrational ... |
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| Technology Support for Combat Casualty Related Medical Infrared Imaging |
10 Aug 2011 |
9 pages |
| Authors:
Robert D Pearlstein; Bobby D Guenther; DUKE UNIV DURHAM NC
|
| Acute Compartment Syndrome (ACS) of the lower extremities is a serious complication that can be limb or even life threatening. The most common causes include fractures and vascular injury, both of which are frequently seen in war wounded soldiers. The present effort was undertaken as part of a collaboration with the Joint Combat Casualty Care Research Team (JC2RT) at Joint Base Balad military hospital to provide training and logistical support ... |
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| Molten Boron Phase-Change Thermal Energy Storage to Augment Solar Thermal Propulsion Systems |
22 Jul 2011 |
7 pages |
| Authors:
David Scharfe; AIR FORCE RESEARCH LAB EDWARDS AFB CA PROPULSION DIRECTORATE
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| Solar thermal propulsion offers a unique combination of high thrust and high specific impulse levels that can provide competitive advantages relative to traditional satellite propulsion systems. In order to enhance the functionality of this technology, thermal storage combined with a means of thermal-to-electric conversion is suggested, with the idea of providing a dual-mode power and propulsion system based on thermal energy. A system including boron phase change material for storing ... |
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| Molten Boron Phase-Change Thermal Energy Storage to Augment Solar Thermal Propulsion Systems |
13 Jul 2011 |
|
| Authors:
Matthew R Gilpin; David B Scharfe; Anthony P Pancotti; AIR FORCE RESEARCH LAB EDWARDS AFB CA PROPULSION DIRECTORATE
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| Solar thermal propulsion offers a unique combination of high thrust and high specific impulse levels that can provide competitive advantages relative to traditional satellite propulsion systems. In order to enhance the functionality of this technology, thermal storage combined with a means of thermal-to-electric conversion is suggested, with the idea of providing a dual-mode power and propulsion system based on thermal energy. A system including boron phase change material for storing ... |
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| Tunable Thermal Radiative Properties of Nanotube and Nanowire Arrays |
28 Jun 2011 |
34 pages |
| Authors:
Xiulin Ruan; Timothy Fisher; PURDUE UNIV LAFAYETTE IN
|
| A multiscale multiphysics simulation tool, by integrating excited state ab initio calculations and FDTD simulations, has been developed. It has the capability of predicting thermal radiative properties of nanotube/nanowire arrays given their atomic structures. Benchmark work is first performed on semiconductor GaAs to demonstrate the effectiveness of our approach, showing that both infrared and visible band radiative properties agree well with experimental data. Ab initio calculations on single walled carbon ... |
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| Coherent Control of Thermal Transport |
10 May 2011 |
8 pages |
| Authors:
Xianfan Xu; PURDUE UNIV LAFAYETTE IN
|
| This project is to develop techniques for controlling conductive thermal transport through excitation and manipulation of coherent phonons in a material. Fundamental studies of coherent phonon generation and interactions with other energy carriers were carried out for the development of the technique. The main method employed in this project is a temporal pulse shaping technique to generate femtosecond laser pulse trains and to excite, enhance, and/or suppress coherent phonons in ... |
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| Military and Civil Defense Nuclear Weapons Effects Projects Conducted at the Nevada Test Site: 1951-1958 |
May 2011 |
250 pages |
| Authors:
Barbara G Killian; DEFENSE THREAT REDUCTION AGENCY FORT BELVOIR VA
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| This report is the result of research conducted by the author for a book co-authored with John Hopkins: Nuclear Weapons Testing at the Nevada Test Site: The First Decade. For the Hopkins/Killian book, Barbara had reviewed all of the 324 projects conducted by the Armed Forces Special Weapons Project (AFSWP) for the Department of Defense (DoD) and the 158 conducted by the Civil Defense Agency (FCDA) on the operations BUSTER-JANGLE ... |
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| Thermo-Chemical Phenomena Simulation for Ablation |
21 Feb 2011 |
10 pages |
| Authors:
Joseph J Shang; WRIGHT STATE UNIV DAYTON OH DEPT OF MECHANICAL AND MATERIALS ENGINEERING
|
| Three major objectives of the basic research grant have been met. First, a physic based chemical kinetic model for high-temperature gas is developed and verified by comparing with data from the RAM-C-II probe and the Stardust sample return capsule. In the absence of an externally applied electromagnetic field, the Lorentz force and Joule heating in the globally neutral ionized gas is insignificant. Meanwhile the energy transfer from the translation and ... |
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| Atomic-Scale Investigation of Graphene Grown on Cu Foil and the Effects of Thermal Annealing |
Jan 2011 |
8 pages |
| Authors:
Jongweon Cho; Li Gao; Jifa Tian; Helin Cao; Wei Wu; Qingkai Yu; Esmeralda N Yitamben; Brandon Fisher; Jeffrey R Guest; Yong P Chen; PURDUE UNIV LAFAYETTE IN DEPT OF PHYSICS
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| We have investigated the effects of thermal annealing on ex-situ chemically vapor deposited submonolayer graphene islands on polycrystalline Cu foil at the atomic-scale using ultrahigh vacuum scanning tunneling microscopy. Low-temperature annealed graphene islands on Cu foil (at 430 deg C) exhibit predominantly striped Moire patterns, indicating a relatively weak interaction between graphene and the underlying polycrystalline Cu foil. Rapid high-temperature annealing of the sample (at 700 800 C) gives rise ... |
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| Kepler Planet-Detection Mission: Introduction and First Results |
19 Feb 2010 |
6 pages |
| Authors:
William J Borucki; David Koch; Gibor Basri; Natalie Batalha; Timothy Brown; Douglas Caldwell; John Caldwell; Joergen Christensen-Dalsgaard; William D Cochran; Edna DeVore; Edward W Dunham; Andrea K Dupree; III Gautier Thomas N; John C Geary; Ronald Gilliland; Alan Gould; Steve B Howell; Jon M Jenkins; Yoji Kondo; David W Latham; NAVAL OBSERVATORY FLAGSTAFF AZ
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| The Kepler mission was designed to determine the frequency of Earth-sized planets in and near the habitable zone of Sun-like stars. The habitable zone is the region where planetary temperatures are suitable for water to exist on a planet's surface. During the first 6 weeks of observations, Kepler monitored 156,000 stars, and five new exoplanets with sizes between 0.37 and 1.6 Jupiter radii and orbital periods from 3.2 to 4.9 ... |
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| Radiation Modeling in Shock-Tubes and Entry Flows |
Sep 2009 |
104 pages |
| Authors:
Sergey T Surzhikov; RUSSIAN ACADEMY OF SCIENCES MOSCOW (RUSSIA) INST FOR PROBLEMS IN MECHANICS
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| In the present lecture some basic problems of state and solving of radiation heat transfer equation as applied to radiation modelling in shock-tubes and entry flow are discussed. The lecture contains five parts. In the first part the radiation heat transfer equation and the general definitions of the radiation heat transfer theory are presented. The definitions introduced in the first part are widely used in other parts. The second part ... |
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| An Elegant Low-cost Materials Solution for Achieving Low Insertion Loss, Affordable Tunable Filters for Next Generation Mobile Communications Platforms |
Apr-2009 |
18 pages |
| Authors:
M W Cole; E Ngo; R J Tan; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE
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| The effect ultraviolet (UV)-assisted annealing on the structural, dielectric, and insulating properties of barium strontium titanate (BST) thin films was investigated. The material properties of BST films, prepared by RF sputter deposition, annealed via conventional thermal annealing and UV-assisted thermal annealing process protocols were compared and evaluated. The x-ray diffraction results showed contracted lattice constants and enhanced crystallinity for the RF sputtered BST films annealed via the UV-assist treatment. Isothermal-temporal ... |
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| Modeling Thermal Inactivation of Bacillus Spores |
Mar-2009 |
94 pages |
| Authors:
Emily A Knight; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
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| This research models and analyzes methods to damage Bacillus anthracis spores through heat treatment. AFIT researchers have developed methods to characterize the effects of heating spores to high temperatures and for short durations similar to the thermal pulse of conventional weapon detonation. This research models the current experiment and evaluates the rate of thermal diffusion throughout the spores. A micro-model of the effects of dry and wet heating on a ... |
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| Optimization of the Temporal Pattern of Applied Radiation Dose: Implication for the Treatment of Prostate Cancer |
Mar-2009 |
28 pages |
| Authors:
Michael Altman; CHICAGO UNIV IL
|
| Our previous modeling study demonstrated that the temporal pattern of applied dose during a single fraction of radiation can impact cell survival, especially in situations with low a/b and large dose/fx and fraction length (Tf). Two different arrangements of the same set of radiation fields were applied to low and high a/b cell lines at a high dose/fx and long Tf; a low a/b line was subjected to the same ... |
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| Further Constraints on the Presence of a Debris Disk in the Multiplanet System Gliese 876 |
JUN 2008 |
6 pages |
| Authors:
P. D. Shankland; D. L. Blank; D. A. Boboltz; T. J. Lazio; G. White; NAVAL OBSERVATORY WASHINGTON DC
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| Using both the Very Large Array (VLA) at 7 mm wavelength, and the Australia Telescope Compact Array (ATCA) at 3 mm, we have searched for microwave emission from cool dust in the extrasolar planetary system Gliese 876 (Gl 876). Having detected no emission above our 3 sigma detection threshold of 135 microJy, we rule out any dust disk with either a mass greater than 0.0006 Earth mass or less than ... |
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| Gun Emittance of a Space Charge Limited Diode Due to Temperature Effects and Surface Roughness |
Apr-2008 |
3 pages |
| Authors:
Paul B Larsen; Antonsen; Thomas M Jr; Khanh T Nguyen; David K Abe; MARYLAND UNIV COLLEGE PARK
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| The emittance of a space charge limited diode is investigated under thermal emission and with a simple surface roughness model. |
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| On the Relationship Between Satellite-Estimated Bio-Optical and Thermal Properties in the Gulf of Mexico |
15 MAR 2008 |
28 pages |
| Authors:
Jason K. Jolliff; John C. Kindle; Bradley Penta; Robert Helber; ZhongPing Lee; Igor G. Shulman; Robert A. Amone; Clark D. Rowley; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS
|
| Three years of Sea-viewing Wide Field-of-view Sensor (SeaWiFS) ocean color data were combined with three-dimensional thermal fields generated by the U.S. Navy's Modular Ocean Data Assimilation System (MODAS) in order to examine the interdependencies between bio-optical fields and their relationship to seasonal and mesoscale changes in upper ocean thermal structure. The combined data set suggests that the oceanic boundary layer within the Gulf of Mexico may be broadly defined by ... |
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| Animal Effects from Soviet Atmospheric Nuclear Tests |
01-Mar-2008 |
118 pages |
| Authors:
V A Logachev; L A Mikhalikhina; ITT CORP ALEXANDRIA VA ADVANCED ENGINEERING AND SCIENCE DIV
|
| This two-part document describes the effect on animal models of atmospheric nuclear weapons tests performed by the Soviet Union at the Semipalatinsk Test Site. Part I describes the air blast and thermal radiation effects. Part 2 covers the effects of primary (prompt) radiation and secondary (fallout) radiation on the test subjects. It also covers combined radiation injuries, defined as a combination of radiation and non-radiation injuries. Several different animal species ... |
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| Desktop Systems for Manufacturing Carbon Nanotube Films by Chemical Vapor Deposition |
Jun-2007 |
148 pages |
| Authors:
David S Kuhn; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| Carbon nanotubes (CNTs) exhibit exceptional electrical, thermal, and mechanical properties that could potentially transform such diverse fields as composites, electronics, cooling, energy storage, and biological sensing. For the United States Navy, composites potentially provide a significant decrease in lifetime maintenance costs of ships by eliminating hull corrosion. A stronger composite could also improve naval ship survivability or increase combat payloads by reducing the hull weight of ships and submarines. Further, ... |
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| Final Programmatic Environmental Impact Statement for Defense Threat Reduction Agency (DTRA) Activities on White Sands Missile Range, New Mexico. Volume 1 |
MAR 2007 |
785 pages |
| Authors:
DEFENSE THREAT REDUCTION AGENCY FORT BELVOIR VA
|
| This Final Programmatic Environmental Impact Statement (PEIS) comprehensively addresses proposed Defense Threat Reduction Agency (DTRA) activities at White Sands Missile Range (WSMR), New Mexico. It addresses future DTRA testing activities and expands on the current testing parameters addressed in existing National Environmental Policy Act (NEPA) documents. It includes a review of current operations and would serve as an environmental reference for future planning and development of various programs. The proposed ... |
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| Decontamination of Explosives-Contaminated Range Scrap Using A Transportable Hot Gas Decontamination (HGD) System: Cost & Performance Report |
JAN 2007 |
50 pages |
| Authors:
Deborah Furnari; Wayne Sisk; Steve Starbuck; ENVIRONMENTAL SECURITY TECHNOLOGY CERTIFICATION PROGRAM OFFICE (DOD) ARLINGTON VA
|
| The Department of Defense (DoD) has numerous target, bombing, test, and firing ranges that have accumulated a substantial amount of recyclable scrap metal in the form of range residue. This scrap metal includes practice bombs, expended artillery, small arms and mortar projectiles, aircraft bombs and missiles, rockets and rocket motors, hard targets, grenades, incendiary devices, experimental items, demolition devices, and other materials fired on or upon a military range. This ... |
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| Development of High-Temperature, High-Power, High-Efficiency, High-Voltage Converters Using Silicon Carbide (SiC) Delivery Order 0003: SiC High Voltage Converters, N-Type Ohmic Contract Development for SiC Power Devices |
DEC 2006 |
13 pages |
| Authors:
Lin Cheng; Michael S. Mazzola; MISSISSIPPI STATE UNIV MISSISSIPPI STATE CENTER FOR ADVANCED SEMICONDUCTOR PROTOTYPING
|
| The durability and reliability of metal-semiconductor contacts are two of the main factors limiting the operational high-temperature limits of SiC electronic devices. To date, nickel (Ni) has been the most widely used metal for ohmic contacts to n-type SiC. The way to make smooth Ni-silicide ? SiC interfaces and silicide top surfaces is important for producing uniformly low contact resistances to achieve device operation at high-current levels without hot spot ... |
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| Application of Nanofiber Technology to Nonwoven Thermal Insulation |
NOV 2006 |
9 pages |
| Authors:
Phil Gibson; Calvin Lee; ARMY SOLDIER SYSTEMS COMMAND NATICK MA
|
| Nanofiber technology (fiber diameter less than 1 micrometer) is under development for future Army lightweight protective clothing systems. Nanofiber applications for ballistic and chemical/biological protection are being actively investigated, but the thermal properties of nanofibers and their potential protection against cold environments are relatively unknown. Previous studies have shown that radiative heat transfer in fibrous battings is minimized at fiber diameters between 5 and 10 micrometers. However, the radiative heat ... |
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| Assessment of Risk Reduction for Lymphedema Following Sentinel Lymph Noded Guided Surgery for Primary Breast Cancer |
Oct-2006 |
43 pages |
| Authors:
Andrea L Cheville; PENNSYLVANIA UNIV PHILADELPHIA
|
| Lymphedema is a common complication of primary breast cancer therapy. It is a chronic, insidiously progressive, and potentially devastating condition. Radiation increases patients lymphedema risk as conventional fields encompass functioning lymphatics. Imaging technologies may identify these lymphatics and allow tailoring of radiation fields to minimize radiation exposure while preserving regional tumor control. This study uses SPECT scanning to localize lymphatics critical for arm drainage after surgical removal of axillary lymph ... |
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| Studies in Forecasting Upper-Level Turbulence |
SEP 2006 |
191 pages |
| Authors:
Christopher T. Kuhl; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF METEOROLOGY
|
| Encounters with turbulence generated by complex topography, convection, or mechanical forcing present a significant threat to military aircraft operations. Properly forecasting the initiation, duration, and intensity of such encounters is a tremendous challenge to forecasters often resulting in the over-forecasting of turbulence. Over-forecasting the presence or intensity of turbulence can result in unnecessary mission delays, cancellations, and re-routing. The lack of observations and the fact that turbulence is a microscale ... |
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| High Mobility 4H-SiC Trenched Gate MOSFETs |
09-Aug-2006 |
11 pages |
| Authors:
Jian Wu; T Burke; J Hu; J H Zhao; X Wang; X Li; ARMY RESEARCH DEVELOPMENT AND ENGINEERING COMMAND REDSTONE ARSENAL AL
|
| A new 4H-SiC trenched gate MOSFET structure with epitaxial buried channel improving the channel mobility is reported. Fabricated devices subject to rapid thermal annealing at 850 deg C for 5 min exhibit a peak field-effect mobility of 104 cm(2)/Vs at room temperature (25 deg C) and a high peak of 269 cm(2)/Vs at 200 deg C, which are among the highest levels reported to date. |
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| Millimeter Wave Induced BioEffects |
JUL 2006 |
73 pages |
| Authors:
Robert Blystone; TRINITY UNIV SAN ANTONIO TX DEPT OF BIOLOGY
|
| A baseline study determined the conditions of hemodynamic collapse in rats anesthetized with either ketamine plus xylazine or isoflurane alone and exposed to environmental heat at 42 or 43 degrees C, 35 GHz at 75 or 90 mW/sq cm, or 94 GHz at 75 or 90 mW/sq cm. Focusing on continuous 94 GHz exposures at power densities of 50, 75, or 100 mW/sq cm, at 23 or 33 degrees C ... |
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| Controlling Hydrogen Embrittlement in Ultra-High Strength Steels |
JUN 2006 |
21 pages |
| Authors:
John R. Scully; Hakan Dogan; Daoming Li; Richard Gangloff; VIRGINIA UNIV CHARLOTTESVILLE DEPT OF MATERIALS SCIENCE AND ENGINEERING
|
| A Fe-13Co-11Ni-3Cr- 1Mo-0.2C steel alloy, processed for ultra-high strength and fracture toughness, exhibits three distinct hydrogen trap states in a complex precipitation hardened martensitic microstructure and is susceptible to severe hydrogen embrittlement (HE) at threshold stress intensity levels as low as 20 MPa square root of m. The causes of HE susceptibility include very high crack-tip tensile stresses and a reservoir of diffusible hydrogen that is trapped reversibly with a ... |
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| Designing Transportable Collectively Protective Shelters for Thermal Efficiency |
2006 |
16 pages |
| Authors:
Neal M. Riemer; Don Johnson; Bryan Kohn; Scott Matheson; Carl Williams; Bill Gillespie; AIR ARMAMENT CENTER EGLIN AFB FL
|
| This paper discusses different techniques for designing a transportable collective protection shelter that is thermally efficient, meaning that the heating and cooling capacity needed to maintain a comfortable environment is minimized. Two areas of shelter design can be optimized to produce a shelter that is thermally efficient. First, a radiant barrier coating can be applied to either the shelter surface or a liner, or a solar shade can be used ... |
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| Methods for Evaluating Thermal Camouflage |
01 DEC 2005 |
|
| Authors:
Frode B. Olsen; NORWEGIAN DEFENCE RESEARCH ESTABLISHMENT KJELLER
|
 | This paper discusses different methods for formulating specifications for thermal camouflage materials or systems. The discussed methods range from full-scale realistic combat-like military exercises to laboratory measurements of material properties and computer simulations. As an introduction to the discussion, a brief overview of the physical processes governing the temperature of outdoors surfaces is given as well as a basic introduction to the formalism and methods used in thermal imaging systems ... |
|
| Transportable and Hybrid Transportable AC Systems |
11 JUL 2005 |
22 pages |
| Authors:
Scot P. Albright; GLOBAL SOLAR ENERGY INC TUCSON AZ
|
| Between 2000 and 2003 Transportable AC Systems (TACS) and Hybrids (HTACS) were developed and demonstrated to support the electrical requirements of Command Centers in the field. Primary power was provided by unbreakable, lightweight, flexible solar modules. Systems included battery bank, AC inverter, and backup generator. The HTACS added Windpower and higher-efficiency solar arrays, and a more ruggedized, modularized, and productionized power control center. Demonstrated were held at six different Military ... |
|
| Monte Carlo Simulation of Plumes Spectral Emission |
07 JUN 2005 |
122 pages |
| Authors:
Sergey T. Surzhikov; RUSSIAN ACADEMY OF SCIENCES MOSCOW (RUSSIA) INST FOR PROBLEMS IN MECHANICS
|
| Methods of spectral diagnostics of nonhomogeneous volumes of heated gases are the most challenging for investigation of exhaust plumes of the hydrogen and carbon-hydrogen fuels. Computing methods of calculation of spectral heat radiation emissivity are the components of the general problem. The numerical simulation of plumes radiation is a challenging problem because there is a large number of different factors which characterize the phenomena of the spectral radiation transfer in ... |
|
| 1.55 Vertical Cavity Surface Emitting Laser With Dielectric Mirrors |
25 APR 2005 |
27 pages |
| Authors:
Fan Ren; Stephen J. Pearton; FLORIDA UNIV GAINESVILLE DEPT OF CHEMICAL ENGINEERING
|
| Design, processing and characterization of high-speed implanted- apertured, lateral-current-injection, dielectric-mirror vertical cavity surface emitting laser and InGaAs based MEM detectors and mixers. We have achieved following goals: I. Designed 1,55 micron InP/InGaAs based tunnel junction structure and purchased two samples with good quality. The VCSEL is being processed. II. Designed SiO2/TiO2 based top and bottom DBR mirrors. III. Performed the thermal simulation of flip-chip double-side dielectric DER mirror VCSEL. IV. ... |
|
| The Far-Infrared Emission Line and Continuum Spectrum of the Seyfert Galaxy NGC 1068 |
10 APR 2005 |
15 pages |
| Authors:
Luigi Spinoglio; Matthew A. Malkan; Howard A. Smith; Eduardo Gonzalez-Alfonso; Jacqueline Fischer; NAVAL RESEARCH LAB WASHINGTON DC
|
| We report on the analysis of the first complete far-infrared spectrum (43 197 m) of the Seyfert 2 galaxy NGC 1068 as observed with the > Long Wavelength Spectrometer (LWS) on board the Infrared Space Observatory (ISO). In addition to the seven expected ionic fine-structure emission lines, the OH rotational lines at 79, 119, and 163 m were all detected in emission, which is unique among galaxies with full LWS ... |
|
| Daytime Detection of Space Objects |
MAR 2005 |
106 pages |
| Authors:
Alistair D. Funge; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| Space Situational Awareness (SSA) requires repeated object updates for orbit accuracy. Detection of unknown objects is critical. A daytime model was developed that evaluated sun flares and assessed thermal emissions from space objects. Iridium satellites generate predictable sun glints. These were used as a model baseline for daytime detections. Flares and space object thermal emissions were examined for daytime detection. A variety of geometric, material and atmospheric characteristics affected this ... |
|
| Thermal Characteristics of Pitch Based Carbon Foam and Phase Change Materials |
MAR 2005 |
76 pages |
| Authors:
Kevin W. Wierschke; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| Phase-change thermal energy storage devices offer thermal control systems an option that allows a smaller heat sink to be used by absorbing the thermal energy quickly and storing it in the phase change to prevent failure of electronic components and then slowly releasing the heat to the heat sink. This paper experimentally determined the transient response of carbon foam with a phase-change material by measuring the response to a step ... |
|
| Pico Satellite Solar Cell Testbed (PSSC Testbed) |
2005 |
4 pages |
| Authors:
Edward J. Simburger; Simon Liu; John Halpine; David Hinkley; Daniel Rumsey; Henry Yoo; AEROSPACE CORP EL SEGUNDO CA
|
| The Picosatellite Solar Cell (PSSC) Testbed flight experiment is designed to obtain space environment degradation data for advanced solar cells. The purpose of the first flight (ISS orbit) is to develop and operationally test the picosatellite and associated ground station. Subsequent flights will be in a Geosynchronous Transfer Orbit, which will provide accelerated radiation degradation data for missions to geosynchronous orbit. |
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| Modelling of Thermal Line Scanning for the Inspection of Delamination in Composites and Cracking in Metals |
DEC 2004 |
|
| Authors:
N. Rajic; DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION VICTORIA (AUSTRALIA) PLATFORM SCIENCES LAB
|
| This report describes a predictive capability, comprising analytical and numerical models, for the development and assessment of thermal line- scanning, an emerging non-destructive technique for the rapid inspection of aircraft struc- tural components. The models describe the two-dimensional heat diffusion process pertaining to the application of a thermal line source to an object moving at constant velocity. Relevant case studies are considered including delamination in a composite laminate and cracking ... |
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| Analysis of Soil and Environmental Processes on Hyperspectral Infrared Signatures of Landmines |
DEC 2004 |
8 pages |
| Authors:
J. M. Cathcart; Robert D. Bock; Ricardo Campbell; GEORGIA INST OF TECH ATLANTA ELECTRO-OPTICS ENVIRONMENT AND MATERIALS LAB
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| Georgia Tech is in the second year of a Multi-University Research Initiative designed to study the impact of environmental processes on optical signatures. In particular, this program is conducting phenomenological studies on hyperspectral and polarimetric signatures of various target classes in the visible and infrared wavebands. Initial research studies have focused on landmines and the impact of various environmental factors and processes (e.g., subsurface processes) on the resultant spectral infrared ... |
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| Parallel MuSES for Infrared Signature Modeling of U.S. Army Vehicles and Targets |
AUG 2004 |
15 pages |
| Authors:
Rama R. Valisetty; Raju R. Namburu; George Petit; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD COMPUTATIONAL AND INFORMATION SCIENCES
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| The objective for this work is the parallelization of the Multiservice Electrooptical Signature (MuSES) code, a commercially available computer code for infrared signature modeling of U.S. Army vehicles and targets. During an earlier phase of development in 2002, the progress in this work included the following: (1) profiling of the code for identifying potential segments of thermal and radiation computations for parallelization, (2) selecting a normalization loop within the selective ... |
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| Analyzing, Evaluating, and Quantifying the Thermal Energy Contributions of the Passive Solar-Heating Elements Incorporated in the Design and Construction of the Plumblee Residence Located in Alamance County, NC |
AUG 2004 |
142 pages |
| Authors:
Mark A. Terrell; NORTH CAROLINA STATE UNIV AT RALEIGH DEPT OF CIVIL ENGINEERING
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| Currently, nationwide efforts are being made to help policymakers, construction professionals and consumers become more aware of the benefits of incorporating sustainable energy principles in residential building design and construction (Miller 1996). Any success in applying these principles is the result of effective communication by design professionals to builders and homeowners in understanding cost benefit tradeoffs for using sustainable energies in homes. The Gordon and Janice Plumblee Residence, located on ... |
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Reports by Keyword(s)
THERMAL RADIATION
