| Structure of Partially Premixed Flames and Advanced Solid Propellants |
30 NOV 1998 |
18 pages |
| Authors:
Melvyn C. Branch; Christopher B. Dreyer; COLORADO UNIV AT BOULDER JOINT CENTER FOR COMBUSTION AND ENVIRONMENT RESEARCH
|
 | The combustion of solid rocket propellants of advanced energetic materials involves a complex process of decomposition and condensed phase reactions in the solid propellant, gaseous flame reactions above the propellant surface, and subsequent mixing and flow through the combustion chamber. The response to combustion instabilities is influenced by the structure of the premixed and partially premixed diffusion flames and triple flames at the propellant surface. This research provided experimental data ... |
|
| Turbulent Mixing in Oceanic Surface and Benthic Boundary Layers |
09 NOV 1998 |
11 pages |
| Authors:
H. J. Fernando; ARIZONA BOARD OF REGENTS TEMPE OFFICE OF RESEARCH AND CREATIVE ACTIVITIES
|
| A comprehensive research program was carried out to investigate turbulence, waves and mixing in oceanic surface and benthic boundary layers, with special emphases on the generation, sustenance, diffusion and decay of turbulence in such layers. The research was mainly laboratory experimental supplemented by analytical and numerical developments. The penetration of a shear-generated turbulent layer into a stably stratified non-turbulent layer, with applications to the oceanic surface-layer deepening, was the theme ... |
|
| Microwave Dielectric Properties of XM46 and a Surrogate Liquid Propellant |
OCT 1998 |
42 pages |
| Authors:
Robert B. Bossoli; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| The microwave dielectric properties of liquid propellant (LP) XM46 were determined at room temperature from 2 to 20 GHz using a dielectric probe technique. The dielectric constant (permittivity) of LP was determined in support of possible studies of the feasibility of using microwave energy to preheat LP for more consistent electric ignition in regenerative liquid propellant guns (RLPG). The dielectric properties would also be important in future investigations of the ... |
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| Characterization of Antitank Firing Ranges at CFB Valcartier, WATC wainwright and CFAD Dundurn |
OCT 1998 |
|
| Authors:
S. Thiboutot; G. Ampleman; A. Gagnon; A. Marois; T. F. Jenkins; DEFENCE RESEARCH ESTABLISHMENT VALCARTIER (QUEBEC)
|
 | Some operational activities of the Canadian Forces such as firing practice may cause the dispersion of energetic compounds in the environment. These compounds should be closely monitored due to their highly specific physical, chemical and toxicological properties. In Canada, limited effort has been spent to examine this particular environmental threat. In this context, the characterization of many firing ranges potentially contaminated with explosives has been performed during the last few ... |
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| Synthesis of High Energy Density Materials Based on Strained Ring Chemistry |
SEP 1998 |
18 pages |
| Authors:
William P. Dailey; PENNSYLVANIA UNIV PHILADELPHIA DEPT OFCHEMISTRY
|
| Several new cyclopropenes were synthesized and evaluated as new High Energy Density Material (HEDM) candidates. An optimized synthetic route to 1.1. 1 propellane was developed and several bicyclo1.1.1pentanes were prepared and evaluated as HEDM materials. Preliminary work toward the preparation and study of bicyclo1.1.1pentyl carbenes under inert gas matrix isolation conditions was undertaken. Several new prismane derivatives were prepared and their stuctures determined by X-ray crystallography. |
|
| Space Systems Environmental Interaction Studies |
30 AUG 1998 |
24 pages |
| Authors:
M. A. Morgan; Alan C. Huber; David J. Sperry; Alan N. Donkin Jr.; Scott J. Moran; AMPTEK INC BEDFORD MA
|
| Development efforts for the DIDM-2 instrument, which occurred under Task 1 of this contract, are reported. Details on various hardware elements are presented. On-going data analysis efforts contracted under Task 2, regarding the SPREE and OEDIPUS-C data sets is reported. A look at the off-shoot software analysis tool developed for the LaTUR data set is presented. Under Task 3 (the Langmuir TURbulence LaTUR rocket investigation program), final details are given ... |
|
| Supplement for Ultrafast Dynamics of Energetic Additives in O2 Clusters |
27 AUG 1998 |
7 pages |
| Authors:
W. C. Lineberger; JOINT INST FOR LAB ASTROPHYSICS BOULDERCO
|
| Extensive theoretical and experimental studies of the photochemistry of energetic cluster ions and the dynamics of molecular reactions within size- selected clusters have been carried out over the past three years. Photodetachment, photoelectron spectroscopy and photodissociation spectroscopy have been utilized to determine the structure of transient species: Incoherent control of reaction products in a cluster ion containing 35 atoms has been demonstrated and, ... |
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| Numerical Simulation of Detonation in Condensed Phase Explosives |
AUG 1998 |
|
| Authors:
D. A. Jones; G. Kemister; R. A. Borg; AERONAUTICAL AND MARITIME RESEARCH LAB MELBOURNE (AUSTRALIA)
|
| This report describes the development of a two-dimensional multi- material Eulerian hydrocode to model the effects of detonating condensed phase explosives on surrounding materials. The code solves the Euler equations for the conservation of mass, momentum, and energy for an inviscid, compressible fluid. Operator splitting is used to reduce the two-dimensional calculation into coupled one-dimensional equations which are then solved using the Flux-Corrected Transport (FCT) algorithm ... |
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| Bonding, Energetics and Mechanical Properties of Intermetallics |
15 JUL 1998 |
27 pages |
| Authors:
Arthur J. Freeman; NORTHWESTERN UNIV EVANSTON IL DEPT OF PHYSICS AND ASTRONOMY
|
| The objective of this research was to investigate fundamental aspects of the fracture and deformation behavior of ordered intermetallic aerospace alloys on the basis of the ab-initio determination of the parameters needed for further (1) model theoretical, (2) band structure and (3) chemical bonding analyses. The research was targeted at investigating the microscopic mechanisms governing the deformation and fracture behavior of intermetallic alloys in order to ... |
|
| Thermal Stabilization of N,N-Dinitramide Salts |
14 JUL 1998 |
|
| Authors:
Thomas P. Russell; Indu B. Mishra; DEPARTMENT OF THE NAVY WASHINGTON DC
|
| The thermal stability of an N,N-dinitramide salt of the formula M(+)N(NO2)2(-) where M(+) is a nitrogen-containing cation is improved by mixing with the N,N-dinitramide salt a prophosphatrane compound. A new composition of matter is formed by mixing the N,N-dinitramide salt and the prophosphatrane compound. |
|
| Rydberg States of Energetic Materials |
01 JUL 1998 |
4 pages |
| Authors:
Elliot R. Bernstein; COLORADO STATE UNIV FORT COLLINS DEPT OF CHEMISTRY
|
| Energetic materials are modeled experimentally and theoretically with regard to possible excited electronic Rydberg state reactivity and dissociation. The systems of methyl and ethyl alkyl amines have been studied. We show that these Rydberg states can be both highly reactive and dissociative. Thus, excited Rydberg states are a possible route to radicals and other reactive species for these model systems. We are presently expanding our experimental capabilities to allow study ... |
|
| EUROMECH 384 Colloquium on Steady and Unsteady Separated Flows Manchester, UK July 6-9 1998. Book of Abstracts |
JUL 1998 |
64 pages |
| Authors:
G. Barakos; D. Drikakis; MANCHESTER UNIV (UNITED KINGDOM)
|
| The numerical simulation of unsteady separated turbulent flows around moving lifting surfaces is fueled by the industrial need to analyse and understand flow phenomena associated with the behaviour of aircrafts during manoeuvres. The complex flow phenomena and interactions that occur during super- manoeuvrable, high-alpha flight are highly non-linear in nature and include the occurrence of strong suction pressures, rapid movement of the stagnation point, transition of ... |
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| TNAZ Based Melt-Cast Explosives: Technology Review and AMRL Research Directions |
JUL 1998 |
|
| Authors:
Duncan S. Watt; Matthew D. Cliff; DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION MELBOURNE (AUSTRALIA)
|
| 1,3,3-Trinitroazetidine (TNAZ) is a new melt-castable explosive with the potential to replace TNT in melt-cast munition fillings. TNAZ possesses an extremely high energy density and, if used in melt-cast systems could substantially increase the performance of currently used munitions. The purpose of this review is to examine work performed to date and identify technology gaps AMRL can address to further this technology. The chemical synthesis ... |
|
| Hydrothermolysis of Energetic Materials: Safety and Continuous Process Parameters |
JUN 1998 |
41 pages |
| Authors:
Indira S. Jayaweera; David S. Ross; Theodore Mill; Paul Penwell; SRI INTERNATIONAL MENLO PARK CA
|
| SRI conducted a study on the hydrothermolytic disposal of energetic materials (EMs) using a continuous flow reactor which was designed, assembled and tested in studies of the hydrothermolysis of ammonium picrate at 360 deg C. The dissolution study showed that the TNT solubility in water increased by a factor of about 200 from 25 deg C to 200 deg C. The literature shows that the solubility of benzene in water ... |
|
| Life-Cycle Impact Assessment Demonstration for the GBU-24 |
JUN 1998 |
96 pages |
| Authors:
Duane Tolle; Bruce Vigon; David Evers; BATTELLE COLUMBUS OPERATIONS OH
|
| U.S. DoD policy has elevated environmental considerations to an equivalent level of importance with cost and performance. Thus, with sponsorshipfrom SERDP, the DoD, DOE, and EPA have cooperated in a program to develop technologies for clean production of propellants, energetics, and pyrotechnic (PEP) materials. Since the PEP program framework is strongly oriented around life-cycle assessment (LCA), a baseline life cycle inventory (LCI) of the guidedbomb unit-24 (GBU-24) made with RDX ... |
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| Interaction of Shock Waves with Materials Having Engineered Microstructures |
25 MAY 1998 |
9 pages |
| Authors:
Y. Horie; NORTH CAROLINA STATE UNIV AT RALEIGH DEPT OF CIVIL ENGINEERING
|
| Two computational techniques have been developed to model heterogeneous and non-equilibrium phenomena in reactive inorganic mixtures under high pressure shock wave loading. The first, known by its acronym VIR, is based on a continuum mixture theory and focused on modeling the interaction between chemical reaction and hydrodynamic flow. The second is a new computational tool called DM2 and is based on a discrete element approach. The second is primarily concerned ... |
|
| Innovator or Imitator: Napoleon's Operational Concepts and the Legacies of Bourcet and Guibert |
21 MAY 1998 |
53 pages |
| Authors:
James N. Wasson; ARMY COMMAND AND GENERAL STAFF COLL FORT LEAVENWORTH KS SCHOOL OF ADVANCED MILITARY STUDIES
|
| In 1805, a new style of operational warfare burst upon the fields of Europe as Napoleon Bonaparte's Grand Army swept from the Rhine to the Danube surrounding the Austrian army at Ulm and initiating a revolution in military affairs (RMA) whose effects are still felt today. The question remains whether this new style of warfare was merely a natural outgrowth of the work of 18th century military thinkers, whose theories ... |
|
| Energetic Fuel Droplet Gasification with Liquid-Phase Reaction |
15 MAY 1998 |
31 pages |
| Authors:
William A. Sirignano; David N. Schiller; CALIFORNIA UNIV IRVINE DEPT OF MECHANICAL AND AEROSPACE ENGINEERING
|
| An analytical and computational study of the gasification and oxidation of an energetic liquid fuel droplet is presented. Single-step, finite- rate. Arrhenius reaction rate expressions are used for exothermic liquid-phase decomposition and gas-phase oxidation. The liquid fuel is assumed to decompose to a gaseous product at a fixed number of bubble sites per unit mass (specified a priori) within the droplet. Decomposed gas escapes the droplet surface by: (1) decomposition ... |
|
| Theoretical Study of the Mechanism of the Decomposition Process of High Energy Density Materials |
30 APR 1998 |
10 pages |
| Authors:
Hi Young Yoo; Jerry Boatz; AIR FORCE RESEARCH LAB EDWARDS AFB CA SPACE AND MISSILE PROPULSION DIV
|
| One of the goals of the HEDM program is the development of high performance monopropellants which are also less toxic than currently used systems such as hydrazine. Included in this effort is the characterization of decomposition mechanisms, as an initial step toward identification of a suitable catalyst. Ab initio quantum mechanical calculations are performed on the decomposition mechanisms of NH2Me2+NO3%, a potential monopropellant replacement for hydrazine. The potential energy surfaces ... |
|
| Theory and Synthesis of New High Energy Density Materials |
30 APR 1998 |
19 pages |
| Authors:
Karl O. Christe; William W. Wilson; Greg W. Drake; Jeff A. Sheehy; Jerry A. Boatz; AIR FORCE RESEARCH LAB EDWARDS AFB CA SPACE AND MISSILE PROPULSION DIV
|
| Efforts are described to combine the NF4+ cation with highly energetic anions, such as NO(2), NO(3), and N(NO2)2. In the case of NO(3), the NO(3) anion was fluorinated already at very low temperatures by NF(4) to give fluorine nitrate in high yield. In the case of NO(2), the reaction with NF(4) yielded an unknown unstable decomposition product in low yield, but the reaction was very difficult to control and consistently ... |
|
| Buoyancy Regulation and the Energetics of Diving in Dolphins Seals, Sea Lions and Sea Otters |
30 APR 1998 |
3 pages |
| Authors:
Daniel P. Costa; CALIFORNIA UNIV SANTA CRUZ
|
| We examined swim speed and ascent descent rates in sea lions and elephant seals in order to make comparisons in their diving strategies and how these may be effected by different strategies of buoyancy regulation. We experimentally examined the relationship between buoyancy and diving behavior in Juvenile northern elephant seals. This study demonstrated that buoyancy plays a significant role in shaping the diving behavior of seals and sea lions. We ... |
|
| Spectral Theory of Schroedinger Eigenstates: Theory and Applications for Atomic Aggregates |
30 APR 1998 |
14 pages |
| Authors:
P. W. Langhoff; J. A. Boatz; J. A. Sheehy; M. E. Fajardo; AIR FORCE RESEARCH LAB EDWARDS AFB CA SPACE AND MISSILE PROPULSION DIV
|
| Progress is reported in the development and application of spectral methods for constructing the adiabatic electronic eigenstates and associated potential energy surfaces of metal-seeded cryogenic clusters relevant to the USAF HEDM Program. |
|
| Computational Investigation of the Structures and Relative Stabilities of Amino/Nitro Derivatives of Ethylene |
27 APR 98 |
19 pages |
| Authors:
P. Politzer; M. C. Concha; M. E. Grice; J. S. Murray; P. Lane; NEW ORLEANS UNIV LA DEPT OF CHEMISTRY
|
| Eight amino and/or nitro derivatives of ethylene have been investigated computationally at the density functional B3P86/6-31+G** level. The molecular geometries and relative stabilities reflect the varying roles of "push-pull" electronic delocalization and intramolecular hydrogen bonding. The same two factors affect, to varying extents, the computed C-NO2 and C-NH2 bond dissociation energies, which are also presented, as are the heats of formation, vaporization and sublimation of the three diaminodinitroethylenes. The potential ... |
|
| Some Chemical and Structural Factors Related to the Metastabilities of Energetic Compounds |
27 APR 98 |
19 pages |
| Authors:
Peter Politzer; Jane S. Murray; NEW ORLEANS UNIV LA DEPT OF CHEMISTRY
|
| We have presented an overview of various attempts to relate the impact and shock sensitivities of energetic materials to their molecular structures. The objectives of such efforts are to better understand the chemical and structural determinants of these sensitivities, and to develop a predictive capability to facilitate the evaluation of new and proposed energetic compounds. Our particular emphasis in this discussion has been upon the relationship of impact sensitivities to ... |
|
| Analytical Modeling of High Rate Processes |
13 APR 1998 |
4 pages |
| Authors:
S. E. Jones; ALABAMA UNIV TUSCALOOSA DEPT OF AEROSPACE ENGINEERING AND MECHANICS
|
| Research was undertaken to deduce the mechanical properties of materials that are not usually candidates for Taylor test analysis. The Taylor test is a very promising method for acquiring data in the 10000 - 1000000 /sec. Strain rate regime. It may be the only for deducing the state of stress for these strain rates, if high strains are required. The Taylor test is usually performed for ductile metals for which ... |
|
| Computed Heats of Formation |
09 APR 98 |
5 pages |
| Authors:
Peter Politzer; M. E. Grice; Monica C. Concha; Pat Lane; NEW ORLEANS UNIV LA DEPT OF CHEMISTRY
|
| We have computed heats of formation for compounds 1 - 8 (Table 1). The first five are target compounds proposed by M. Trudell (University of New Orleans); 6 - 8 have recently been prepared by R. Schmitt and J. Bottaro (SRI). For the molecular systems 1 - 7, we used our density functional procedure to obtain gas phase heats of formation, which were converted to liquid and solid state values ... |
|
| Fundamental Studies of Ions and Ionic Processes |
08 APR 98 |
6 pages |
| Authors:
Henry F. Schaefer; GEORGIA UNIV RESEARCH FOUNDATION INC ATHENS
|
| The object of this research is to characterize the energetics, spectroscopic properties, and elementary chemical reactions of molecular ions. The approach used will exploit recent developments in ab initio molecular quantum mechanics. Some of the systems to be studied include the species CF sub n and (n=1-3), SF sub n and (n=1-7), (HNO3)n (H2O)m, (ClNO3), (H2SO4)m (HNO3)n (H2O)o, and + CH4. |
|
| DURIP97 Femtosecond Vibrational Spectroscopy of Shock Waves in Materials |
01 APR 98 |
2 pages |
| Authors:
Dana D. Dlott; ILLINOIS UNIV AT URBANA
|
| This grant provided partial funding for the acquisition of a powerful femtosecond laser. The laser is to be used in making femtosecond time resolved measurements of shock waves in molecular materials, with the eventual application being understanding the sensitivity to shock initiation of energetic materials. After suitable negotiations, a CPA 10 laser from Clark-MXR corporation was selected and ordered. To save money, some parts and ... |
|
| Thermal Decomposition of Energetic Materials: TNCHP, TNAZ, 24DNI, ANTA, DNBT and HMX |
31 MAR 1998 |
95 pages |
| Authors:
Richard Behrens; SANDIA NATIONAL LABS LIVERMORE CA COMBUSTION RESEARCH FACILITY
|
| The physical and chemical processes that control the thermal decomposition of several different types of energetic materials have been determined from measurements with a simultaneous thermogravimetric modulated beam mass spectrometer (STMBMS). The compounds studied include HMX, hexahydro-1-nitroso-3,5-dinitro-s-triazine (ONDNTA), 2,4-dinitroimidazole (24DNI), TNAZ, 1- nitro-3,3-dinitroazetidine (NDNAZ), 3-amino-5-nitro-1,2,4-triazole (ANTA), 5,5'-dinitro-3,3'-bi-1,2,4-triazole (DNBT), and a complex of DNBT.2ANTA. The results on HMX provide new insights on the solid-phase decomposition processes that takeplace within individual particles. ... |
|
| Intramolecular and Intermolecular Energy Transfer in Highly Vibrationally Excited Molecules |
18 MAR 98 |
8 pages |
| Authors:
F. F. Crim; WISCONSIN UNIV-MADISON DEPT OF CHEMISTRY
|
| The research described in this Final Report was directed at studying the dynamics of vibrationally excited molecules, which are important in many energetic environments. The first goal was assembly of an ultrafast laser system producing 1 mJ, 100 fs pulses of 800 nm light, and implementing nonlinear processes for converting those pulses to infrared and ultraviolet light. This system permitted the a direct measurement of the ... |
|
| Preparation of Magnesium-Fluoropolymer Pyrotechnic Material |
25 FEB 1998 |
18 pages |
| Authors:
George W. Nauflett; Robert E. Farncomb; Lalit Chordia; DEPARTMENT OF THE NAVY WASHINGTON DC
|
| A process for preparing energetic materials by: (1) dissolving a vinylidene fluoride-hexafluoropropylene copolymer in a ketone that is acetone, methyl ethyl ketone, or mixtures thereof, (2) adding polytetrafluoroethylene particles and reactive metal (magnesium, aluminum, or their alloys) particles to form a slurry, (3) adding CO2 to the slurry to precipitate out the copolymer which then coats the polytetrafluoroethylene and reactive metal particles, and (4) separating the copolymer-coated particles from the ... |
|
| CRRES Observations of Particle Flux Dropout Events |
15 FEB 98 |
19 pages |
| Authors:
J. Fennell; J. Roeder; H. Spence; H. Singer; A. Korth; AEROSPACE CORP EL SEGUNDO CA TECHNOLOGY OPERATIONS
|
| The complete disappearance of energetic electrons was observed by CRRES in the near geosynchronous region in 7.5% of the orbits examined. These total flux dropouts were defined by the fluxes rapidly dropping to levels below the sensitivity of the MBA energetic electron spectrometer on the CRRES satellite. They were separated into those that were only energetic electron dropouts and those that were associated with energetic ... |
|
| Survey of Ring Current Composition During Magnetic Storms |
15 FEB 98 |
12 pages |
| Authors:
M. Grande; C. H. Perry; A. Hall; J. Fennell; B. Wilken; AEROSPACE CORP EL SEGUNDO CA TECHNOLOGY OPERATIONS
|
| During geomagnetic storms, the ring current is substantially modified and intensified. We use data from the MICS instrument on CRRES to investigate composition changes in magnetospheric ions in the energy range 20-400 keV/e. These are related to the Dst signature of the storm. Long term survey plots of MICS data show that during storms there is an initial increase of ionospheric material at around L = ... |
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| Process for Preparing Ammonium Dinitramide |
03 FEB 1998 |
|
| Authors:
Alfred G. Stern; William M. Koppes; Michael E. Sitzmann; Lori A. Nock; Donna M. Cason-Smith; DEPARTMENT OF THE NAVY WASHINGTON DC
|
| A process for preparing ammonium dinitramide by: (1) nitrating either ethyl carbamate or methyl carbamate to form the corresponding mononitrate compound, ethyl N-nitrocarbamate or methyl N-nitrocarbamate; (2) reacting the N-nitrocarbamate with ammonia under anhydrous conditions to produce the corresponding ammonium salt ammonium ethyl N-nitrocarbamate or ammonium methyl N-nitrocarbamate: (3) nitrating the ammonium salt and then treating the reaction mixture with ammonia to produce ammonium dinitramide, ammonium nitrate, and regenerate the ... |
|
| Recovery of Pyrotechnic Ingredients Using Supercritical Fluids |
21 JAN 1998 |
16 pages |
| Authors:
Glenn T. Hong; APHIOS CORP WOBURN MA
|
| Many pyrotechnics contain valuable resources which could be used in commercial applications, for example metals (e.g. magnesium, aluminum); metallic salts of copper, strontium, and barium; oxidizer (e.g. sodium nitrate, potassium perchlorate); binders such as viton, and dyes which have reclaimed value. The Navy is seeking technology that can recover the valuable ingredients from pyrotechnic flares and smoke munitions in an environmentally acceptable manner. This Phase I program studied the recovery ... |
|
| Improved Economical and Environmentally Benign Routes for the Large- Scale Synthesis of 1,3,3-Trinitroazetidine |
12 JAN 98 |
79 pages |
| Authors:
Alan P. Marchand; UNIVERSITY OF NORTH TEXAS DENTON DEPT OF CHEMISTRY
|
| Several routes for the synthesis of 1,3,3-trinitroazetidine (TNAZ) have been investigated. Of these the most promising new method involves studies of additions of various reagents, X-Y, across the highly strained C(3)-N sigma- bond in 3-ethyl-1-azabicyclo1.1.0butane. In the course of this study, it was found that reaction of this highly strained bicyclic amine with in situ generated HNO2 resulted in addition across the C(3)-N bond with concomitant N- nitrosation of the ... |
|
| A Life-Cycle Inventory-Based Comparison of an RDX-Based and a TNAZ-BasedGBU-24 Munition |
JAN 1998 |
349 pages |
| Authors:
D. Tolle; B. Vigon; D. Evers; S. Ricci; BATTELLE COLUMBUS OH
|
| U.S. DoD policy has elevated environmental considerations to an equivalent level of importance with cost and performance. Thus, with sponsorshipfrom SERDP, the DoD, DOE, and EPA have cooperated in a program to develop technologies for clean production of propellants, energetics, and pyrotechnic (PEP) materials. Since the PEP program framework is strongly oriented around life-cycle assessment (LCA), a baseline life cycle inventory (LCI) of the guidedbomb unit-24 (GBU-24) made with RDX ... |
|
| Energetic Particles and Magnetic Fields in the Earth's Magnetosphere and Interplanetary Space |
Jan 1998 |
4 pages |
| Authors:
James A Van Allen; IOWA UNIV IOWA CITY DEPT OF PHYSICS AND ASTRONOMY
|
| To advance observational knowledge and understanding of: (1) the propagation of energetic particles in the interplanetary medium, (2) the dependence of the intensity of galactic cosmic rays on solar activity and on distance from the Sun, (3) the perturbation of the Earth's inner radiation belt by geomagnetic storms, and (4) the nature of Jupiter's inner radiation belt. |
|
| Shock Waves in Condensed Matter, International Conference, Saint- Petersburg, Russia, 12-17 July 1998 |
1998 |
257 pages |
| Authors:
Aleksei L. Krivchenko; Alexander Yu. Dolgoborodov; Igor Yu. Klimenko; AKADEMIYA NAUK SSSR MOSCOW INST KHIMICHESKOI FIZIKI
|
| The report documents information presented at the International Conference on Shock Waves in Condensed Matter held 12-17 July 1998 at Saint- Petersburg, Russia. The report primarily focuses on detonation physics of energetic materials and mathematical modeling of detonation processes, and also covers important issues related to shock wave processes in metals, ceramics and composites. In addition, Molecular dynamics in study of shock wave processes ... |
|
| Experimental Charge Densities and Electrostatic Potentials in Energetic Materials and Infrastructure Upgrade for an X-ray Crystallography Laboratory |
1998 |
485 pages |
| Authors:
R. Miller; J. Goldwasser; TOLEDO UNIV OH DEPT OF CHEMISTRY
|
| To install a state-of-the-art X-ray crystallography laboratory with a new diffractometer using CCD area detector technology and develop data collection and data reduction protocols for charge density studies. To compare charge density results from a CCD detector to those obtained by conventional diffractometers. To fully evaluate the suitability of CCD detectors for the experimental study of electron density distributions and the derived electrostatic potentials. To ... |
|
| 75 Years, Naval Research Laboratory 1998 NRL Review |
1998 |
237 pages |
| Authors:
NAVAL RESEARCH LAB WASHINGTON DC
|
| The mission is to conduct a broadly based multidisciplinary program of scientific research and advanced technological development directed toward maritime applications of new and improved materials, techniques, equipment, systems, and ocean, atmospheric, and space sciences and related technologies. |
|
| Recycling Propellants in Nonpolluting Supercritical Fluids: Novel Computational Chemistry Models for Predicting Effective Solvents |
1998 |
31 pages |
| Authors:
Betsy M. Rice; Cary F. Chabalowski; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE
|
| The conventional methods of demilitarization of energetic components of the demilitarization inventory, open burning or open detonation (OB/OD), are being restricted due to the resulting generation of pollution Additionally, OB/OD destroys valuable energetic materials that could otherwise be reused if extracted from the stockpiles. An alternative demilitarization procedure to OB/OD is supercritical fluid (SF) extraction of the energetic materials. In addition to eliminating pollution, SF extraction allows for the recycling ... |
|
| NRL Review 1998 |
1998 |
252 pages |
| Authors:
John D. Bultman; Bruce W. Buckley; Timothy Coffey; NAVAL RESEARCH LAB WASHINGTON DC
|
| The mission is to conduct a broadly based multidisciplinary program of scientific research and advanced technological development directed toward maritime applications of new and improved materials, techniques, equipment, systems, and ocean, atmospheric, and space sciences and related technologies. |
|
| Advance Cryogenic Propellants |
DEC 1997 |
31 pages |
| Authors:
V. A. Apkarian; R. B. Gerber; K. C. Janda; J. Rutledge; P. Taborek; CALIFORNIA UNIV IRVINE DEPT OF CHEMISTRY
|
| The applied ends of the URI on advanced cryogenic propellants, namely the feasibility of preparing cryogenic materials with higher energy density than systems presently in use, have been met with two examples: solid hydrogens doped with atomic oxygen, and solid oxygen doped with atomic oxygen. Both of these systems have been demonstrated in the laboratory, and in the latter case, where doping number densites of order 1% have ... |
|
| The Use of Rigid Polyurethane Foam as a Landmine Breaching Technique |
DEC 1997 |
75 pages |
| Authors:
Albert L. Alba; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The results of a feasibility test using Rigid Polyurethane Foam (RPF) as an operational anti-personnel mine counter-mine technique are presented. RPF, at a given density and thickness, can withstand the explosive effects of anti- personnel blast mines and mitigate or neutralize the effects of surface laid anti-vehicular mines. A 12-inch thick, 4 pound per cubic foot foam block completely contained a 10 gram explosive charge of PETN while a 30-inch ... |
|
| Structural Assessment of Solid Propellant Grains (l'Evaluation structurale des blocs de poudre a' propergol solide) |
DEC 1997 |
|
| Authors:
ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (FRANCE)
|
| Solid propellant rocket motors and gas generators are used in military and civil devices. Missiles, boosters, space propulsion, pyrotechnic actuators are examples. The structural capability of the grain over time and under varying temperature, humidity, and mechanical loads, is of prime concern for the reliability, safety and service life of the device. From 1994 to 1996 an AGARD working group has collected, reviewed and evaluated the methods used for structural ... |
|
| Clean, Agile Processing Technology |
DEC 1997 |
20 pages |
| Authors:
S. W. Sinton; A. W. Chow; LOCKHEED MARTIN MISSILES AND SPACE CO SUNNYVALE CA
|
| This contract was part of the Clean, Agile Manufacturing of Explosives (CAME) program managed by ONR and funded by the Strategic Environmental Research and Development Program (SERDP). The overall goal of CAME was to enable a 90% reduction in pollution from the Nation's propellants, explosives, and pyrotechnics (PEP) life cycle. Major elements of CAME designed to address the pollution reduction goal were the reduction or elimination of manufacturing scrap and ... |
|
| Assessment of Thermal Neutron Activation Applied to Surface and Near Surface Unexploded Ordnance |
DEC 1997 |
|
| Authors:
Lisa Porter; David A. Sparrow; INSTITUTE FOR DEFENSE ANALYSES ALEXANDRIA VA
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| Thermal neutron activation (TNA) has been proposed for confirming the presence of energetic materials as part of a mine or unexploded ordnance detection system. SAIC, funded through the Night Vision Electro-Sciences Directorate by the Environmental Security Test Certification Program, has carried out proof of concept demonstrations of TNA in this confirmatory role at Socorro, NM, and at Yuma, AZ. In this paper, we present a description of the phenomenology of ... |
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| Surface and Gas-Phase Diagnostics for Solid Propellant Combustion |
28 NOV 97 |
32 pages |
| Authors:
John H. Stufflebeam; UNITED TECHNOLOGIES RESEARCH CENTER EAST HARTFORD CT
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| This program addresses the extremely challenging problem of direct, in situ diagnostics of the heterogeneous surface reaction zone of energetic materials combustion. Specifically, the experiments employed an optical diagnostic, Raman scattering, to provide critically-needed species-and temperature-specific information on surface and near-surface reaction zones of modem, nitramine-based propellant formulations. Experiments employed a laboratory-scale, motorized, and servo-controlled, strand burner over a range of pressure from 1-20 atm. Broadband Raman scattering from the ... |
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| Energetic Species in Condensed Oxygen/Ozone |
27 OCT 97 |
20 pages |
| Authors:
Richard A. Copeland; Hanspeter Helm; Mark Dyer; SRI INTERNATIONAL MENLO PARK CA MOLECULAR PHYSICS LAB
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| The goal of the High Energy Density Matter Program of the Air Force, the development of a rocket propellant that significantly improves on the performance of the conventional liquid hydrogen/liquid oxygen rocket propellant, is an ambitious and important undertaking. The 'next generation' propellant must be energetic, economical, and safe from both an engineering and environmental standpoint. These properties are often mutually exclusive and a balance of availability and ease of ... |
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Reports by Keyword(s)
ENERGETIC PROPERTIES
