Air Force High Energy Density Material Hedm Project

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Air Force High Energy Density Material (HEDM) Project

Author :
Publisher :
ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Air Force High Energy Density Material (HEDM) Project by :

Download or read book Air Force High Energy Density Material (HEDM) Project written by and published by . This book was released on 1996 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes the successes of our effort for the HEDM program, both methodological and in terms of metastable molecule chemistry. Recognizing the prospects for highly energetic metastable species based upon nitrogen, we initiated our study of a variety of such potential molecules. These included N3H3, which is isoelectronic with the well-known species ozone, cyclopropane and propene; tetrahedral N4 which is isovalent with P4 or As4, and is forbidden by symmetry from decaying to ground state N2 molecules; octahedral N8, isoelectronic with cubane and similarly forbidden from direct decomposition to N2 in its ground state; and pentazole, HN5. Each of these was found to contribute a metastable minimum on the global potential energy surface, which also provided the IR spectra of these unknown molecules. At the CCIMBPT level of approximation the vibrational frequencies are normally within 5% of experiment and the relative intensities typically to within about 20. Other work includes studies of transients involved in pertinent oxidation processes like H2CO2 and OCBO, and our new approach to excited states, EOM-CCSD.

Theory and Synthesis of New High Energy Density Materials

Author :
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ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (742 download)

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Book Synopsis Theory and Synthesis of New High Energy Density Materials by :

Download or read book Theory and Synthesis of New High Energy Density Materials written by and published by . This book was released on 2000 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this AFOSR program is the synthesis of novel HEDM compounds, exploiting the synergism between theory and synthesis. Theoretical calculations are routinely used to guide the synthesis efforts and to facilitate the identification and characterization of the products.

High Energy Density Materials

Author : Thomas M. Klapötke
Publisher : Springer
ISBN 13 : 9783642091353
Total Pages : 0 pages
Book Rating : 4.0/5 (913 download)

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Book Synopsis High Energy Density Materials by : Thomas M. Klapötke

Download or read book High Energy Density Materials written by Thomas M. Klapötke and published by Springer. This book was released on 2010-11-23 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes some recent developments in the area of high-energy high-density (HEDM) materials. Rather than being comprehensive in scope, emphasis is given to structural and bonding features of highly energetic - terials with possible applications as high explosives (secondary explosives) or propellants. In this book we do not focus on primary explosives (e.g. lead azidereplacements)sincebyde?nitiontheexplosiveperformance(detonation velocity and detonation pressure) of such materials - although very sensitive -are much less energetic than secondary (high) explosives. Modern HEDMs derive most of their energy (i) from oxidation of the c- bon backbone, as in traditional energetic materials, (ii) from ring or cage strain, or (iii) from their very high positive heat of formation. Examples of the?rstclassare traditionalexplosives, suchasTNT, RDXand HMX.Modern nitro-compounds, such as CL-20 or the recently reported hepta- and octa- trocubanes, belong to the second group of explosives and possess very high densities and enhance the energies utilizing substantial cage strain. Members of the third class of compounds are high-nitrogen compounds (up to 85% - trogencontent), such as aminotetrazole and nitrotetrazolederivatives, which show the desired remarkable insensitivity to electrostatic discharge, friction and impact, while having very high positive heats of formation and therefore very high explosive powers. The synthesis of energetic, non-nuclear materials for military application has been a long-term goal in various academic and military research groups worldwide. Some of the current challenges that face HEDMscientists are: - Demandforenvironmentallycompatibleandtoxicologicallyacceptable- plosives and propellants. Examples are replacements for TNT, RDX and HMXsince nitro-explosivesper se, aswellastheir environmental transf- mation products, are toxic.

Air Force Magazine

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Publisher :
ISBN 13 :
Total Pages : 640 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Air Force Magazine by :

Download or read book Air Force Magazine written by and published by . This book was released on 1991-07 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:

High Energy Density Materials (HEDM)

Author : Sara Wallin
Publisher :
ISBN 13 :
Total Pages : 109 pages
Book Rating : 4.:/5 (185 download)

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Book Synopsis High Energy Density Materials (HEDM) by : Sara Wallin

Download or read book High Energy Density Materials (HEDM) written by Sara Wallin and published by . This book was released on 2004 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Computational Science - Iccs 2001

Author : Vassil Alexandrov
Publisher : Springer Science & Business Media
ISBN 13 : 3540422323
Total Pages : 1294 pages
Book Rating : 4.5/5 (44 download)

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Book Synopsis Computational Science - Iccs 2001 by : Vassil Alexandrov

Download or read book Computational Science - Iccs 2001 written by Vassil Alexandrov and published by Springer Science & Business Media. This book was released on 2001-05-24 with total page 1294 pages. Available in PDF, EPUB and Kindle. Book excerpt: LNCS volumes 2073 and 2074 contain the proceedings of the International Conference on Computational Science, ICCS 2001, held in San Francisco, California, May 27 -31, 2001. The two volumes consist of more than 230 contributed and invited papers that reflect the aims of the conference to bring together researchers and scientists from mathematics and computer science as basic computing disciplines, researchers from various application areas who are pioneering advanced application of computational methods to sciences such as physics, chemistry, life sciences, and engineering, arts and humanitarian fields, along with software developers and vendors, to discuss problems and solutions in the area, to identify new issues, and to shape future directions for research, as well as to help industrial users apply various advanced computational techniques.

New Materials Design

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Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (946 download)

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Book Synopsis New Materials Design by :

Download or read book New Materials Design written by and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress has been made on several projects under the Challenge Project award. In the area of high energy density materials, calculations are under way on Al atoms embedded in clusters of 112 molecule. These calculations are very demanding, since very large basis sets and high levels of theory are required to obtain sufficient accuracy for these really bound species. Potential energy surfaces are being determined to assess the mobility of an Al atom in H2 matrices. Similar analyses are underway for B, Be, and Mg atoms. In another HEDM project, a series of large, nitrogen-containing rings, suggested as HEDM targets by Dr. Rob Schmitt at SRI, are being studied. The first of these has been shown to have a very large heat of formation and specific impulse, so it is a very promising species. Calculations on the second compound are in progress. Subsequent calculations will analyze the sensitivity of these compounds to environmental interactions (e.g., hydrolysis, acid/base attack, oxygen). Calculations of the structures and hydrogen bonding interactions present in 1, 1-diamino-2,2-dinitroethene, a new energetic material with low friction sensitivity, are also underway.

Proceedings of the High Energy Density Matter (HEDM) Contractor's Conference Held 4-7 June 1995 in Woods Hole MA

Author : Patrick G. Carrick
Publisher :
ISBN 13 :
Total Pages : 378 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Proceedings of the High Energy Density Matter (HEDM) Contractor's Conference Held 4-7 June 1995 in Woods Hole MA by : Patrick G. Carrick

Download or read book Proceedings of the High Energy Density Matter (HEDM) Contractor's Conference Held 4-7 June 1995 in Woods Hole MA written by Patrick G. Carrick and published by . This book was released on 1996 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents the information presented at the Ninth annual High Energy Dwensity Matter (HEDM) Contractors' Conference held 4-7 June 1994 in Woods Hole, MA. This report contains the extended abstracts of the oral, workshops, and poster presentations given by the Air Force funded contractors and by the in-house researchers from the Phillips Laboratory.

New World Vistas

Author : United States. USAF Scientific Advisory Board
Publisher :
ISBN 13 :
Total Pages : 192 pages
Book Rating : 4.3/5 ( download)

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Book Synopsis New World Vistas by : United States. USAF Scientific Advisory Board

Download or read book New World Vistas written by United States. USAF Scientific Advisory Board and published by . This book was released on 1996 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Environmental Effects on High Energy Density Materials

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ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Environmental Effects on High Energy Density Materials by :

Download or read book Environmental Effects on High Energy Density Materials written by and published by . This book was released on 1996 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The object of this research is to characterize, using ab initio quantum mechanical methods, the stabilizing or destabilizing effects of hydrogen and/or oxygen matrices on proposed high energy density molecular (HEDM) systems. In addition, the unimolecular fragmentation reactions of large HEDM species such as N20 will be studied via density functional methods.

Scientific and Technical Aerospace Reports

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ISBN 13 :
Total Pages : 542 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis Scientific and Technical Aerospace Reports by :

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Proceedings of the High Energy Density Matter (HEDM) Contractor's Conference Held 5-7 June 1994 in Crystal Bay Neveda

Author :
Publisher :
ISBN 13 :
Total Pages : 308 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Proceedings of the High Energy Density Matter (HEDM) Contractor's Conference Held 5-7 June 1994 in Crystal Bay Neveda by :

Download or read book Proceedings of the High Energy Density Matter (HEDM) Contractor's Conference Held 5-7 June 1994 in Crystal Bay Neveda written by and published by . This book was released on 1994 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents the information presented at the eighth annual High Energy Density Matter (HEDM) Contractors' Conference held 5-7 June 1994 in Crystal Bay NV. This report contains the extended abstracts of the oral, workshop, and poster presentations given by the Air Force funded contractors and by the in-house researchers from the Phillips Laboratory. The main purpose of the High Energy Density Matter (HEDM) program is to research and develop advanced high energy compounds containing increased energy densities (energy to mass ratios) to produce greater specific impulses (thrust per weight flow rate of propellant) which will enable spacecraft to carry larger payloads. With these advanced propellants, future space-bound payloads could be possibly four times greater that they are today. jg.

Commerce Business Daily

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ISBN 13 :
Total Pages : 1512 pages
Book Rating : 4.:/5 (334 download)

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Download or read book Commerce Business Daily written by and published by . This book was released on 1997-12-31 with total page 1512 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Manufacturing Science and Technology Area Plan, FY 94

Author : DIANE Publishing Company
Publisher : DIANE Publishing
ISBN 13 : 9780788106415
Total Pages : 66 pages
Book Rating : 4.1/5 (64 download)

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Book Synopsis Manufacturing Science and Technology Area Plan, FY 94 by : DIANE Publishing Company

Download or read book Manufacturing Science and Technology Area Plan, FY 94 written by DIANE Publishing Company and published by DIANE Publishing. This book was released on 1994-04 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: A planning document for the FY 94-99 Science & Technology program. Discusses technology for logistics & technology for test. Program descriptions for: aircraft, missiles & munitions, launch systems, C3I mission electronics, spacecraft, aerospace sustainment, manufacturing systems, & advanced manufacturing. Glossary. Charts, tables & drawings.

Energy Research Abstracts

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ISBN 13 :
Total Pages : 472 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis Energy Research Abstracts by :

Download or read book Energy Research Abstracts written by and published by . This book was released on 1993-08 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:

A Review of United States Air Force and Department of Defense Aerospace Propulsion Needs

Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309102472
Total Pages : 288 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis A Review of United States Air Force and Department of Defense Aerospace Propulsion Needs by : National Research Council

Download or read book A Review of United States Air Force and Department of Defense Aerospace Propulsion Needs written by National Research Council and published by National Academies Press. This book was released on 2007-01-14 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rocket and air-breathing propulsion systems are the foundation on which planning for future aerospace systems rests. A Review of United States Air Force and Department of Defense Aerospace Propulsion Needs assesses the existing technical base in these areas and examines the future Air Force capabilities the base will be expected to support. This report also defines gaps and recommends where future warfighter capabilities not yet fully defined could be met by current science and technology development plans.

Proceedings of the High Energy Density Matter (HEDM) Conference (5th) Held in Albuquerque, New Mexico on February 24-27, 1991

Author :
Publisher :
ISBN 13 :
Total Pages : 289 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Proceedings of the High Energy Density Matter (HEDM) Conference (5th) Held in Albuquerque, New Mexico on February 24-27, 1991 by :

Download or read book Proceedings of the High Energy Density Matter (HEDM) Conference (5th) Held in Albuquerque, New Mexico on February 24-27, 1991 written by and published by . This book was released on 1991 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents the information presented at the fifth annual High Energy Density Matter (HEDM) Contractors Conference held 24-27 February 1991 in Albuquerque, NM. This report contains the extended abstracts of the presentations, oral and poster, given by Air Force funded contractors and by in-house researchers from the Phillips Laboratory. Keywords: HEDM, High Energy Density Matter, propellant, CBES, chemically bound excited states, metastability, spectroscopy, solid hydrogen, matrices, dications, metallic hydrogen, ab initio calculations, oxidizers, potential energy surfaces, surface crossing, laser spectroscopy, Fourier transform spectroscopy, cluster-impact fusion, hypervalent anions, hydrogen azide, fluorine azide, photodynamics, photodissociation, cryogenic matrices, infrared spectroscopy, slater-type orbitals, momentum space, Fock hypersphere, matrix, nitrocyclopropenes, electronic spectroscopy, supersonic beam, metastable metals, metastable materials, metastable ions, lithium-aluminum, stability, amorphous materials, ultra high resolution spectroscopy, isotopic substitution, modeling studies, radiationless decay, state-resolved dynamics, photoelectron spectroscopy, matrix materials, metastable molecules, van der Waals interaction, solid rare gases, spin-forbidden, state-resolved dynamics, alkali metal atoms, xenon(II) cations, tritiated solid hydrogen.