| U. S. Army Engineer Research and Development Center: Rapid Repair of Levee Breaches |
Jun 2011 |
64 pages |
| Authors:
Donald Resio; Stanley Boc; Donald Ward; Andrew Kleinman; Jimmy Fowler; Brian Welsh; Michael Matalik; Phil Goodwin; OAK RIDGE NATIONAL LAB TN
|
 | In 2007 the U.S. Department of Homeland Security provided initial funding for the development and demonstration of a rapid repair of levee breaches (RRLB) concept. Following successful concept development and testing, funding for the program was continued and has evolved to include multiple components, including the portable lightweight ubiquitous gasket, the rapidly emplaced protection for earthen levees, and the rapidly emplaced hydraulic arch barrier. RRLB devices are primarily tubes made ... |
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| Safety: Special Effects of Thermal Runaway Chapter Heading for Encyclopedia of Electrochemical Power Sources (PREPRINT) |
09 NOV 2007 |
12 pages |
| Authors:
Henry A. Catherino; ARMY TANK AUTOMOTIVE RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI
|
| Any system that stores energy has the potential of becoming a significant safety problem. The objective of any designed application using a battery is to release the energy under prescribed and controlled conditions. Unfortunately, the rapid, uncontrolled release of the stored energy at the wrong time and place is a matter of concern. The presentation here addresses the special effects of thermal runaway as the phenomenon applies to batteries. Although ... |
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| Acoustic Identification of Filler Materials in Unexploded Ordnance |
APR 2006 |
70 pages |
| Authors:
Wesley Cobb; DENVER RESEARCH INST CO
|
| The objective of this project is to utilize acoustic waves to identify the materials inside sealed unexploded ordnance (UXO). Acoustic waves are high frequency pressure fluctuations (sound) that travel through materials. Small sensors clamped to the outside of the ordnance send low-energy acoustic waves through the container walls and filler. The received signals are analyzed to determine the characteristic acoustic properties of the filler material. To identify the filler, these ... |
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| Survivability of Collective Protection Systems Subjected to Air Blast Loads |
2006 |
7 pages |
| Authors:
Jonathan R. Porter; John R. Hawk; Michael I. Hammons; AIR FORCE RESEARCH LAB TYNDALL AFB FL
|
| M28 liners installed in Tent Extendable Modular Personnel (TEMPER) and Small Shelter System (SSS) tents ripped, separated at the zip connections, and failed to maintain pressure when subjected to blast loading by a satchel-sized explosive charge at standoff distances of 100 feet or more, while the parent tents suffered little or no damage at a standoff distance of 65 feet. This paper describes air blast field tests on M28 Collective ... |
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| Thermal Runaway |
21 FEB 2005 |
24 pages |
| Authors:
Henry A. Catherino; TACOM RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI
|
| During battery discharge, the heat generated is the sum of the Joule (resistive) and enthalpic (chemical) heating effects. Conversely, during battery charging, the heat generated is the Joule minus the enthalpic heating. If the conditions are carefully selected, one can observe a net battery cooling during charging. However, an interesting phenomenon takes place during overcharge. Those cells designed as sealed recombinant systems develop significant heating. Flooded designs do not exhibit ... |
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| Frictionless Linear Electrical Generator for Harvesting Motion Energy |
19 NOV 2004 |
45 pages |
| Authors:
Jeffrey T. Cheung; ROCKWELL INTERNATIONAL THOUSAND OAKS CA
|
| A key limitation in a buoy-based oceanographic monitoring systems is the lack of a reliable power source with long operational lifetime. Battery packs suffer from the replacement cost and inconvenience. Traditional renewable energy devices do not fully address the need due to their poor performance in the hostile marine environment (e.g. solar cells) or size and cost (e.g. OWEC systems) To fill this important niche, we have developed a new ... |
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| Investigation of Characteristics of High-Power Wide-Band Plasma-Filled Traveling Wave Tubes (TWT) |
MAY 2004 |
75 pages |
| Authors:
Vladimir Perevodchikov; STATE RESEARCH CENTER OF RUSSIAN FEDERATION MOSCOW RUSSIAN ELECTROTECHNICAL INST
|
| This report results from a contract tasking The Russian Federation State Research Center - All Russian Electrotechnical Institute as follows: A non-relativistic beam-plasma microwave amplifier (Plasma-Filled TrVT) based on a hybrid coupled-cavity slow-wave structure (CCSWS) with a plasma-filled transit channel has been developed in VEI. Needed improvements of these microwave tubes for their commercial and industrial applications in communication systems and microwave technology require special investigations of the main features ... |
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| Electrochemical Synthesis of Carbon Nano- and Micro-Tubes from Molten Salts |
01 SEP 2003 |
30 pages |
| Authors:
George Kaptay; UNIVERSITY OF MISKOLC (HUNGARY)
|
| This report results from a contract tasking University of Miskolc as follows: The objective of the research project is to produce carbon nanotubes using molten salt electrolysis. A series of experiments will be performed to determine the relationship between production conditions and morphology of carbon tubes. Potential, current density, duration, and electrolysis mode will be varied in different experiments. The experiments will be performed in a sealed high temperature cell, ... |
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| Carbon Dioxide Scrubbing Capabilities of Two New Non-Powered Technologies |
27 AUG 2003 |
33 pages |
| Authors:
William Norfleet; Wayne Horn; NAVAL SUBMARINE MEDICAL RESEARCH LAB GROTON CT
|
| Current guidance for survivors aboard a disabled submarine (DISSUB) recommends the use of the "stir-and-fan" method of carbon dioxide (CO2) scrubbing in which the contents of canisters of lithium hydroxide (LiOH) are dispersed onto horizontal surfaces. This technique is objectionable because it releases large quantities of fine, caustic LiOH dust and it utilizes LiOH inefficiently. This report presents the results of laboratory studies of the CO2 scrubbing capabilities of two ... |
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| Evaluation of Triple Containment Method for Air Transport of Contaminated Human |
AUG 2003 |
34 pages |
| Authors:
James S. Neville; Lance L. Annicelli; Dale D. Thomas III; AIR FORCE INST FOR OPERATIONAL HEALTH BROOKS CITY-BASE TX SURVEILLANCE DIRECTORATE
|
| A triple containment system intended for transport of biologically contaminated human remains was tested for its ability to maintain integrity during exposure to altitude changes representative of air transport. The system consisted of commercially available products; BioSeal(registered) material, a Ziegler case, and a Batesville casket. Each was tested individually and as a system. The BioSeal(registered) material was robust but did not maintain a seal in all tests. The Ziegler case ... |
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| Rotary Electromagnetic Launch Tube |
06 JUN 2003 |
13 pages |
| Authors:
Carlos E. Galliano; NAVAL UNDERSEA WARFARE CENTER DIV NEWPORT RI
|
| An underwater launch system includes a launch tube frangibly sealed at its forward end. At launch time, pressure equalization means introduces water at depth pressure into the launch tube between its frangibly sealed ends. A rotary electromagnetic pump coupled to the launch tube receives water at depth and expels the water at a higher pressure. The higher pressure water is coupled to the aft end of the launch tube. |
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| Improved Shutter Door Seal |
20 DEC 2002 |
14 pages |
| Authors:
Henry J. Banas; NAVAL UNDERSEA WARFARE CENTER NEWPORT DIV RI
|
| A sealing assembly is disclosed for closing a gap between a hull wall and a shutter door of a vessel. The sealing assembly includes a metal retainer member having a mounting block portion and a gap-closing portion extending from the mounting block portion. The mounting block portion is mounted to the hull wall and includes a slot formed therein parallel to the hull wall. The gap-closing portion has a tapered ... |
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| Sealed Window Glazing System for Chemical Biological Protected Space Applications |
OCT 2002 |
18 pages |
| Authors:
Dov Dover; Mark Anderson; Richard N. Vickers; APPLIED RESEARCH ASSOCIATES INC TYNDALLAFB FL GULF COAST DIV
|
| Recent world events have drawn attention to threats that extend beyond deployed forces to the civilian population. In the recent Gulf War, several specific threats were highlighted for both U.S. military forces and Israeli civilians. The most obvious threat to civilians in that conflict was explosive. Less obvious, but even more potentially dangerous, was the threat of chemical-biological weapons of mass destruction. The key in "protective design" is to define ... |
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| Development of an Evanescent Microwave Probe Scanner for Detecting and Assessing Corrosion Beneath Painted and/or Sealed Surfaces |
19 JUL 2002 |
|
| Authors:
Massood Tabib-Azar; Joshua Altherr; Jeff Siebert; MANUFACTURING INSTRUMENTATION CONSULTANT CO CLEVELAND OH
|
 | Our activities during this Phase I SBIR grant included four major undertakings: (1) Designed and constructed EMP arrays suitable for corrosion mapping, (2) Investigated and obtained autonomous microrobots to be fitted with EMP arrays, (3) Investigated and identified suitable wireless systems for microrobot-microrobot and microrobot-central unit communication, and (4) Investigated and designed the overall system composed of the central information processing unit and set the stage for large numbers of ... |
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| Methylphosphonofluoridic Acid a Thermal Degradation Production of Some Nerve Agents |
JAN 2002 |
6 pages |
| Authors:
Michael D. Crenshaw; BATTELLE MEMORIAL INST COLUMBUS OH
|
| The nerve agent sarin (isopropyl methylphosphonofluoridate) thermally breaks down to form methylphosphonofluoridic acid and propylene. The thermal breakdown of soman (pinacolyl methylphosphonofluoridate) probably forms methylphosphonofluoridic acid as well. Continued high temperature treatment such as that of an incinerator would continue the breakdown process. In order to prove that no methylphosphonofluoridic acid is produced, an analytical standard is required. Methylphosphonofluoridic acid was produced by disproportionation of methylphosphonic difluoride with methylphosphonic acid. ... |
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| Self Adjusting Neutral Buoyancy Countermeasure and System |
10 OCT 2001 |
24 pages |
| Authors:
Neil J. Dubois; DEPARTMENT OF THE NAVY WASHINGTON DC
|
| An underwater self adjusting displacement device includes a sealed housing having an exterior wall and an inner component area, the exterior wall having an opening formed therein. A sealing plug is slidably seated in the opening of the exterior wall, and an actuator mechanism selectively adjusts the sealing plug within the opening, thereby adjusting a total displacement of the sealed housing. The displacement device is incorporated into any substantially neutrally ... |
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| Quiet, Clean, Multi-fueled, Multi-kilowatt Thermophotovoltaic Generator |
20 OCT 2000 |
18 pages |
| Authors:
Michael Seal; WESTERN WASHINGTON UNIV BELLINGHAM
|
| A stand-alone generator that is capable of producing one kWatt was developed during the contract period. Power to weight ratio has been improved from 10 Watts/K to 50 Watts/K. Exhaust emissions are less than 1 PPM HC and 300 PPM CO. NOx emissions are still high but a Rhodium or Rubidium flash coating on the metal recuperator surface should get below the 15 PPM target. The ... |
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| NACA 0012 Oscillatory and Transient Pitching |
01 OCT 2000 |
16 pages |
| Authors:
R. H. Landon; AIRCRAFT RESEARCH ASSOCIATION LTD BEDFORD (UNITED KINGDOM)
|
| These results are extracted from tabulations of wing pressures resulting from the 3rd series of pitching tests about O.25c axis made in the ARA 2-dimensional tunnel, using the pitching and heaving rig, Ref 1. The main purpose of these tests was to examine the conditions of dynamic stall and recovery at sealed time rates similar to those of a typical helicopter application. Dynamic similarity was maintained also in Reynolds number, ... |
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| Reusable Gas-Powered Hand Grenade. |
07 DEC 1999 |
|
| Authors:
Robert Woodall; Felipe Garcia; DEPARTMENT OF THE NAVY WASHINGTON DC
|
| A reusable gas-powered hand grenade is provided. A hand- held housing,, defines one or more launch tubes. A projectile is loaded in each launch tube with an obturator being positioned therein between the projectile and the launch tube's muzzle end. A sealed reservoir is maintained in the housing for storing a gas under pressure. A rupturing device is mounted in the housing for breaking the reservoir's seal upon impact therewith. ... |
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| Rechargeable Battery/Systems for Communication/Electronic Applications An Analysis of Technology Trends, Applications and Projected Business Climate |
30 SEP 1999 |
121 pages |
| Authors:
ARMY MATERIEL SYSTEMS ANALYSIS ACTIVITYROCK ISLAND IL
|
| The North American Technology and Industrial Base Organization (NATIBO) study of the rechargeable battery and battery charger technology and the associated industrial base highlights the state-of-the-art and future trends of this technology and industrial base as well as the ability of industry to meet future military communication and electronic requirements. The objective of the study was to compare the current trends in the commercial rechargeable battery ... |
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| Environmental Assessment for Integration, Assembly, Test, and Checkout of National Missile Defense Components at Redstone Arsenal, Alabama |
22 FEB 1999 |
97 pages |
| Authors:
Vanessa Turner; ARMY SPACE AND MISSILE DEFENSE COMMAND HUNTSVILLE AL
|
| The purpose of the IAT&C program is to provide facilities in which National Missile Defense (NMD) interceptor missiles can be integrated and assembled prior to their use in testing or their deployment as part of the NMD system. Boeing does not have suitable facilities at its Huntsville plant to assemble or store the missiles. There are no facilities at Redstone Arsenal currently configured to be ... |
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| Development of Low Volume Shape Memory Alloy Variable Ballast System for AUV Use |
30 SEP 1998 |
6 pages |
| Authors:
Graeme J. Rae; FLORIDA INST OF TECH MELBOURNE DEPT OF MARINE AND ENVIRONMENTAL SYSTEMS
|
| The long term goal is to develop a near silent, air free, electrically operated ballast system for use in underwater vehicles. Objectives are to arrive at a workable design for a ballast system that decreases and increases buoyancy at a range of depths, in increments small enough for precise control. It would operate on command, silently, electrically, controllably, and without release of any material or air. Examine how the fabrication ... |
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| Feasibility of Wireless Data Transmission on Ships |
OCT 97 |
|
| Authors:
David S. Hosom; WOODS HOLE OCEANOGRAPHIC INSTITUTION MA
|
| This report will present the results of an investigation into the feasibility of several modes of wireless data transmission including: (1) radio frequency modems, (2) acoustic modems (using the ship's steel hull for a path with a 'HullPhone'), (3) power line systems, such as X-lO units, and (4) possible power line utilization of telephone modems. There is a need for wireless data transmission on both Voluntary Observing Ships (VOS) and ... |
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| Near IR Photocathode Development |
27 JUL 1997 |
13 pages |
| Authors:
Verle Aebi; Kenneth Costello; Gary Davis; Ross LaRue; Robert Weiss; INTEVAC INC SANTA CLARA CA
|
| This paper reports on the development of transmission mode Transferred Electron (TE) photocathodes with quantum efficiency in excess of 10% which function in the 950 - 1700 nm wavelength range. Photocathode device physics will be briefly covered along with sealed tube photocathode performance. Results will be presented for both imaging and non-imaging detectors. Measured performance characteristics include: photocathode spectral response, dark current, image tube resolution, and image quality data. A ... |
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| Spooled Tape Seal for Underwater Gun Operation |
15 JUL 1997 |
|
| Authors:
Ivan N. Kirschner; Laurence M. Dean; B. Phillips; DEPARTMENT OF THE NAVY WASHINGTON DC
|
| The present invention relates to an underwater weapon having a system for sealing the opening of a gun barrel to prevent the ingress of water. The sealing system includes a non-metallic or metallic tape for covering and sealing the opening and a mating surface on the gun barrel against which the tape is seated to prevent the ingress of water. The sealing system further includes sprockets for advancing the tape ... |
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| New Fabrication Strategies for Polymer Electrolyte Batteries |
MAY 97 |
28 pages |
| Authors:
D. F. Shriver; S. Vaynman; NORTHWESTERN UNIV EVANSTON IL DEPT OF CHEMISTRY
|
| The current approaches to the fabrication of solid state lithium cells are based on mechanically joining discrete layers of electrodes and electrolytes. The individual layers are typically produced by a variety of processing techniques. Lithium foil is produced by rolling, and polymer electrolytes and anode films are often formed by doctor blade methods. The films are then laminated together and sealed in an air tight case. Lithium is sensitive to ... |
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| Advantages and Disadvantages of Three-Layer Raised Computer Flooring |
NOV 96 |
5 pages |
| Authors:
Paul Kistler; NAVAL FACILITIES ENGINEERING SERVICE CENTER PORT HUENEME CA
|
| A traditional single-layer raised computer floor often combines three functions; routing space for low-voltage signaling cables between computer, routing space for high-voltage power cables to computers, and plenum to supply cool air to prevent computers from overheating. A three-layer raised floor separates these functions into three separate layers; the top layer houses the low voltage signal cables, the middle layer houses the high voltage power cables, and the lower layer ... |
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| International Space Station Passive and Active Common Berthing Mechanism Thermal Cycle Test |
SEP 96 |
57 pages |
| Authors:
J. D. Sisco; L. G. Rogers; J. S. Wilkerson; W. G. Burt; ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFS TN
|
| The International Space Station Alpha Common Berthing Mechanism (CBM) thermal cycle test was conducted in the Arnold Engineering Development Center (AEDC) 12V Thermal Vacuum Chamber. The CBM is the primary mechanical interface for joining the International Space Station Alpha modules on-orbit. The CBM system consists of a pair of 6-ft-diam rings with the appropriate means to seal the joint upon mating. The first ring, called Active CBM (ACBM), houses the ... |
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| Investigation of High Temperature Electronic Packaging Based on Borosilicate Glass |
JAN 96 |
12 pages |
| Authors:
Eric D. Cole; STRATEGIC ANALYSIS INC ARLINGTON VA
|
| Strategic Analysis, Inc. (SA), in collaboration with George Mason University (GMU), demonstrated feasibility of several aspects of a novel packaging concept for SiC devices that could withstand temperatures in excess of 650 deg C. SA proved the feasibility of laser welding for attaching SiC devices to a transparent substrate. This concept eliminates the need for intermetallic solders for bonding and die attachment while utilizing pass under lead-throughs. These package simplifications ... |
|
| Growth and Study of Superconducting C60 Compounds |
DEC 95 |
10 pages |
| Authors:
J. Z. Liu; R. N. Shelton; P. Klavins; S. H. Irons; I-c Chang; CALIFORNIA UNIV DAVIS
|
| A home made semi-automatic feeding plasma arc reactor was used for the mass production fullerenes. Large, high quality single crystals of C60 up to 3mm in length have been grown by both the open-end and sealed vapor transport techniques. Millimeter-sized superconducting single crystals of K3C60 were successfully produced by a sophisticated vacuum doping method. Magnetic and superconducting properties were obtained. Information on the field and temperature dependences of the critical ... |
|
| X-Ray Crystallography of Botulinum Neurotoxins |
OCT 95 |
7 pages |
| Authors:
Martin Sax; VETERANS ADMINISTRATION MEDICAL CENTER PITTSBURGH PA
|
| Botulinum neurotoxin, type E (Bot E) was purified to evaluate the affects of purity on crystallization. It was found that purification of the product from PHLS/CAMR Proton, Salisbury, VK did not improve crystal quality significantly. Accordingly, the product was used as supplied in further crystallization experiments. Diffraction quality crystals were grown by VAMC personnel at Fort Detrick, but the crystal which were transported in sealed capillary tubes deteriorated in transportation. ... |
|
| Spray Coating of Metals. Phase 1. Feasibility Of Concept |
AUG 95 |
172 pages |
| Authors:
Scott A. Ploger; Patricia B. Hembree; Lloyd D. Watson; IDAHO NATIONAL ENGINEERING LAB IDAHO FALLS
|
| Idaho National Engineering Laboratory (INEL) is developing a new coating technique to eliminate hazardous wastes generated by electroplating processes at Air Logistics Centers. In this approach, molten metal is sprayed in fine droplets directly onto a base metal, with near-perfect conversion efficiency and without forming any hazardous liquid or airborne wastes. This phase I feasibility study confirmed that a low-melting-point metal can be deposited with excellent adhesion and negligible porosity, ... |
|
| Development of an Ultra-Safe Rechargeable Lithium-Ion Battery |
15 NOV 94 |
4 pages |
| Authors:
J. K. Jacobs; ELECTROFUEL MFG CO TORONTO (ONTARIO)
|
| The project activities had an official start on August 15. Based on previous work, a statement of the basic design framework to be used was an important first step. The basic cell is to be a bonded flat-pack containing all active cell components in a sealed envelope. Cell integrity is to be provided by internal bonding, and not through external support. This design approach is fundamentally different from that commonly ... |
|
| Lubricant Evaluation and Performance II |
FEB 94 |
475 pages |
| Authors:
Costandy S. Saba; Michael A. Keller; Kenneth K. Chao; Douglas K. Toth; Mary F. Borchers; DAYTON UNIV OH RESEARCH INST
|
| Thermal and oxidative stability, deposition and foaming techniques were developed for predicting the performance of candidate 4 cSt lubricants, polyphenyl ether (PPE), C-ether and other experimental fluids for use in advanced aircraft turbine engines. A novel sealed tube test was developed to study the rate of reaction in both liquid and vapor phase using only microliter quantities of the lubricants. Blending agents and/or diluents were used to improve the low ... |
|
| Quality Assurance Plan for Placement of Cold-Cap Grout, Demonstration Vault, Hanford Grout Vault Program |
AUG 92 |
27 pages |
| Authors:
Patrick T. Harrington; Lillian D. Wakeley; James J. Ernzen; Donald M. Walley; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS STRUCTURES LAB
|
| During FY 91, the U.S. Army Engineer Waterways Experiment Station (WES) developed a grout to be used as a cold cap, a nonradioactive layer, between the solidified waste and the cover blocks of a demonstration waste disposal vault at the U.S. Department of Energy Hanford Facility. This document recommends requirements for a quality assurance (QA) plan for field mixing and placing of the cold-cap grout during final closure of the ... |
|
| Fire Endurance Testing of Fiberglass Piping |
APR 92 |
56 pages |
| Authors:
D. E. Beene Jr; COAST GUARD RESEARCH AND DEVELOPMENT CENTER GROTON CT
|
| The U.S. Coast Guard has conducted fire endurance tests on several types of fiberglass reinforced plastic piping (FGP) as well as other common piping materials. The test piping, including joints and fittings, was exposed to large hydrocarbon pool fires (Phase 1), propane flames from a multi-burner array (Phase 2), and simulated localized machinery space fires (Phase 3). Test objectives included the following: (1) to investigate FGP fire endurance under various ... |
|
| Performance Characteristics of the Sealed Lead/Acid BB-490/U Battery |
AUG 91 |
17 pages |
| Authors:
Louis Jarvis; ARMY LAB COMMAND FORT MONMOUTH NJ ELECTRONICS TECHNOLOGY AND DEVICES LAB
|
| Performance characterization of a sealed lead/acid battery (BB-490/U) as a replacement for the lithium/sulfur dioxide battery (BA-5590/U) was undertaken. The effects of discharge rate and temperature upon battery performance were studied. Results were compared to those of the BA-5590/U battery under identical test conditions. Delivered capacity of the BB-490/U is greatly dependent upon both the rate of discharge and temperature; whereas, BA- 5590/U performance is highly stable throughout the various ... |
|
| Performance Characteristics of the Sealed Lead/Acid BB-490/U Battery |
AUG 91 |
17 pages |
| Authors:
Louis Jarvis; ARMY LAB COMMAND FORT MONMOUTH NJ ELECTRONICS TECHNOLOGY AND DEVICES LAB
|
| Performance characterization of a sealed lead/acid battery (BB-490/U) as a replacement for the lithium/sulfur dioxide battery (BA-5590/U) was undertaken. The effects of discharge rate and temperature upon battery performance were studied. Results were compared to those of the BA-5590/U battery under identical test conditions. Delivered capacity of the BB-490/U is greatly dependent upon both the rate of discharge and temperature; whereas, BA- 5590/U performance is highly stable throughout the various ... |
|
| Thermal Degradation Chemistry of Poly(Diphenoxyphosphazene) |
25 APR 91 |
9 pages |
| Authors:
Shawn Maynard; Tom Sharp; James F. Haw; TEXAS A AND M UNIV COLLEGE STATION DEPT OF CHEMISTRY
|
| The thermal degradation of poly(diphenoxyphosphazene) has been reexamined with emphasis on the roles of P-CI and P-OH weak links. The polymers studied had residual chlorine contents of <0.05%, 2.4%, and 9.9%. Thermal degradations were performed either in a synamic mode on the direct insertion probe of a mass spectrometer or under isothermal conditions in sealed ampules at temhperatures up to 40 C. Several model compounds (products observed from the synamic ... |
|
| The Medical Hazards of Flame-Suppressant Atmospheres |
19 APR 91 |
24 pages |
| Authors:
Douglas R. Knight; NAVAL SUBMARINE MEDICAL RESEARCH LAB GROTON CT
|
| Flames are a potential hazard to the occupants of sealed chambers. This report describes four modifications of air that will suppress or extinguish flames. They are: (1) SUPPLEMENTATION - the addition of an appropriate foreign gas to air. (2) N2 PRESSURIZATION - the addition of compressed N2 to air. (3) DEPRESSURIZATION - the partial evacuation of air from the chamber. (4) N2 DILUTION - the exchange of N2 for O2. ... |
|
| Geophysical Surveys for Location of a Suspected Abandoned Mine Opening: Grays Landing Site |
MAR 91 |
31 pages |
| Authors:
Dwain K. Butler; Thomas B. Kean Ii; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS GEOTECHNICAL LAB
|
| Results of magnetic and electromagnetic surveys at the Grays landing Lock and Dam site on the Monongahela River near Waynesburg, Pennsylvania, are presented. the purpose of the surveys was to locate suspected abandoned mine openings in an area of the left abutment. Extensive subsurface mining of the Pittsburgh Coal has been carried out in this area since the mid-to-late nineteenth century. Old mine maps and records indicate an 1882 drift ... |
|
| An Optically Pumped Molecular Bromine Laser |
DEC 90 |
100 pages |
| Authors:
Jon W. Morrison; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
|
| An optically pumped molecular bromine laser was studied to investigate the quenching kinetics state of Br2. This included characterization of the pressure dependence of the laser output power. The approach was to excite molecular bromine in a sealed cell with a Nd:YAG pumped dye laser. Unresolved side fluorescence and amplified stimulated emission (ASE) spectra were recorded. ASE offered the advantage of a simpler optical system with no externally induced wavelength ... |
|
| Field Evaluation of Port Everglades, Florida, Rehabilitation of South Jetty By Void Sealing |
OCT 90 |
77 pages |
| Authors:
Julie D. Rosati; Thomas A. Denes; COASTAL ENGINEERING RESEARCH CENTER VICKSBURG MS
|
| This report presents results of a monitoring program designed to evaluate the effectiveness of a prototype void and sand-sealing operation. The Port Everglades south jetty is a rubble stone structure with large 'man sized' voids. Beach Fills place south of the structure eroded at an extremely high rate, indicating that material was being lost through the structure into the entrance channel, where it was thought to be a contributing factor ... |
|
| Joining Alumina to Sapphire for Copper Vapor Laser Tubes |
10 SEP 90 |
75 pages |
| Authors:
Antonia P. Tomsia; Andreas M. Glaeser; Joseph A. Pask; PASK RESEARCH AND ENGINEERING INC PINOLE CA
|
| The technology for building copper vapor lasers has existed for years. The joining technology for producing sealed copper vapor lasers did not. Thus, our focus during Phase I research was to explore means of joining alumina to alumina and alumina to sapphire for high temperature applications. We felt that it was imperative to explore more than one joining technique, and for a given technique, to investigate a range of conditions ... |
|
| Submarine Torpedo Tube Primary Seal Interlock. |
13 AUG 1990 |
|
| Authors:
Paul Moody; DEPARTMENT OF THE NAVY WASHINGTON DC
|
| This patent application discloses a mechanical interlock system having an interlock segment that is mechanically coupled to the breech door, to the slide valve, and to the muzzle door of an associated torpedo tube in such a way that the interlock segment positively prevents opening, or the initiation of the opening sequence, of the breech door if either the corresponding muzzle door or slide valve for a particular torpedo tube ... |
|
| The Effect of Jet Fuel Exposure on Advanced Aerospace Composites II: mechanical Properties |
AUG 90 |
26 pages |
| Authors:
David B. Curliss; Diana M. Carlin; WRIGHT RESEARCH AND DEVELOPMENT CENTER WRIGHT-PATTERSON AFB OH
|
| The sensitivity of several advanced aerospace composite materials to military jet fuel, JP-4, was investigated in this study. The following commercially available fiber/matrix prepreg materials were used in this investigation: AS-4/3501-6; IM7/8551-7A; IM7/977-2 (1377-2T); IM7/5250-4; IM8HTA; and AS-4/PEEK(APC-2). The materials were chosen as representative state- of-the-art materials in their classes of standard epoxy, toughened epoxy, toughened BMI, and thermoplastic matrix composites respectively. The materials were processed into (+ or - ... |
|
| Modeling of the Non-Auditory Response to Blast Overpressure. Use of Surrogate and Analytical Models to Understand the Parameters Controlling Blast Injury to the Gastro-Intestinal Tract |
JAN 90 |
26 pages |
| Authors:
James H. Stuhmiller; James H. Yu; Edward J. Vasel; JAYCOR SAN DIEGO CA
|
| Previous experimental studies using excised, perfused rabbit intestine in a sealed water tank, have provided direct visual observation that air bubbles produce local, violent, intestinal wall motion when they collapse under blast loading and that injury directly correlates with those motions. Measurements of the pressure within the bubble was shown to correlate with the motion of the wall and with injury. It was speculated that this pressure is an indirect ... |
|
| Reference Properties of Cement-Based Plugging and Sealing Materials for the Waste Isolation Pilot Plant (WIPP) |
NOV 89 |
20 pages |
| Authors:
Charles W. Gulick; Lillian D. Wakeley; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS STRUCTURES LAB
|
| The Structures Laboratory of the US Army Engineer Waterways Experiment Station has conducted research on cement-based composites for the Waste Isolation Pilot Project (WIPP) since 1977 in support of Sandia National Laboratories. Sealing shafts and plugging boreholes for closure of this geologic repository for radioactive wastes will require grouts and concretes. Salt- saturated grouts and concretes bond adequately to the bedded halite host rock. Fresh-water mixtures will plug and seal ... |
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| Method of Making a Transducer from a Boule of Lithium Tetraborate and Transducer so Made. |
23 OCT 1989 |
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| Authors:
Arthur Ballato; John A. Kosinski; DEPARTMENT OF THE ARMY WASHINGTON DC
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| The general object of this invention is to provide a transducer characterized by frequency insensitivity to temperature variations. A more particular object of the invention is to provide a transducer in which both the first- and the second- order temperature coefficient of frequency are substantially zero. Another object of the invention is to provide a transducer in which the piezoelectric coupling is large. Still another object of the invention is ... |
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| Proceedings of the Workshop on Antiproton Technology Held in Brookhaven National Laboratory on 10 May 1989. Addendum |
SEP 89 |
41 pages |
| Authors:
Gerald D. Nordley; ASTRONAUTICS LAB (AFSC) EDWARDS AFB CA
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| Antiprotons are particles of antimatter which release highly penetrating radiation when they are stopped in normal matter. According to presentations at the Antiproton Technology Workshop this radiation can be used, in very small quantities, to image objects and determine their composition and density. In larger amounts, the radiation could be used to kill cancer tumors or produce highly localized heating and shock waves. Contents: Stopping Power of MeV Proton and ... |
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SEALED SYSTEMS
