18 Matching Results

Search Results

Advanced search parameters have been applied.

Slow PBX development. Quarterly report, October--December, 1971

Description: A total of nine batches of pressable baratol and pressable Composition B-3 were made and analyzed. One pressing was made for P/040 fabrication and test fire. The first P/040 plane wave lenses designed were fabricated and fired, yielding a center-leading average of 0.17 {micro}sec asimultaneity. The interface contour was redesigned and two lenses were fabricated and fired, resulting in center-lagging asimultaneity of 0.098 {micro}sec and 0.074 {micro}sec.
Date: December 31, 1972
Creator: Slape, R.J. & Crutchmer, J.A.
Partner: UNT Libraries Government Documents Department

Extrudable explosives. Quarterly report, October--December, 1971

Description: Several extrudable HE formulations using, principally, HNAB as the explosive component were examined in efforts to develop an extrudable composition more temperature-resistant than Extex. It is shown that extrudability is dependent upon particle character, wetting of the binder compound, roll-milling technique and the addition of fine metallic oxides to improve flow properties, while detonability is dependent upon explosive concentration, a hard cure, and the shock parameters of the confining media.
Date: December 31, 1972
Creator: Warren, T.W. & Irion, C.E.
Partner: UNT Libraries Government Documents Department

Development of PEX explosives phase diagram studies. Quarterly report, October--December, 1971

Description: Experiments have been carried out to determine the solid-liquid phase diagrams of binary mixtures of FEFO, EDNP, BDNPA and BDNPF. Cooling curves for the mixtures give no indication of crystal formation. Penetration measurements indicate a glass transition for all of the mixtures below {minus}40 C. The existence of glassy states for the mixtures was confirmed by visual observation with a polarizing microscope. Thermomicroscopy has been used in the preliminary study of the phase behavior of four binary mixtures. So far no eutectic has been observed.
Date: December 31, 1972
Creator: Faubion, B.D.
Partner: UNT Libraries Government Documents Department

AFNOL synthesis. Quarterly report, October--December, 1971

Description: Five batches of unplasticized AFNOL, each approximately one pound, were synthesized using 4,4-dinitropimelic acid as the starting material. Two 10 g batches were completed prior to the pound batches to assure the usability of the acid chloride. Characterization of each of the larger batches was by differential thermal analysis (DTA), infrared spectrophotometry (IR), and cure tests. Some characterization was also done on the commercial chemicals used in the synthesis.
Date: December 31, 1972
Creator: Quinlin, W.T.
Partner: UNT Libraries Government Documents Department

PETN homologs

Description: High purity nitrate esters of the pentaerythritols can be successfully synthesized from correspondingly high purity reagents. The latter are not commercially available, but may be purified through molecular distillation and/or fractional crystallization from xylene. The isolated products are ultimately saponified to reagents of high purity. The nitration of high purity pentaerythritols using 97-100% nitric acid proceeds smoothly resulting in yields of the corresponding nitrate esters which are nearly quantitative. Thin layer chromatography (TLC) indicates numerous satellite impurities present in all the pentaerythritol-tetranitrate (PETN) homologs with the exception of ultrapure PETN itself. Separation and isolation of these contaminants, from a high impurity concentrate, was achieved by liquid chromatography. IR spectra of these components suggests these compounds are the various homologs and pentaerythryl ethers with a mixture of hydroxyl and nitrate functional groups.
Date: February 1, 1972
Creator: Sandoval, J. & Quinlin, W.T.
Partner: UNT Libraries Government Documents Department

Fillers and potting compounds. Quarterly report, October--December, 1971

Description: The work this period concentrated on packaging RTV silicone fluids in a commercial purchased package-bag. The samples will be stored for a period of six months at ambient temperature. Because of the rigid film of the Bipax Bag, it is doubtful that this method of packaging silicones will develop into an acceptable process. To enhance this process, a more pliable bag should be incorporated into the packaging system.
Date: December 31, 1972
Creator: Montague, J.L.
Partner: UNT Libraries Government Documents Department

Isostatic pressing development. Quarterly report, October--December, 1971

Description: About 150 process-development pressings were made in prototype tooling. Problems arose which include stress cracking caused by difficult stripping of the part from the mandrel. Pressings made of PBX 9404 presented none of these problems. The primary effort is being directed toward developing a process for LX-09 and LX-04 pressings which at present are the problem areas.
Date: December 31, 1972
Creator: Adams, J.C. & Sheeran, R.E.
Partner: UNT Libraries Government Documents Department

Study of explosives in the MDF form. Quarterly report, October--December, 1971

Description: Mild detonating fuse (MDF) is capable of consistent detonation velocity and thus provides an accurate timing device when precisely fabricated. Explosives that have been synthesized and designated for use in MDF should be qualified in the end use configuration. Polycarbonate tubes/HNAB were drawn to 85 grain/foot (gr/ft) and test fired. Aluminum tubes/PETN were drawn to 0.8 gr/ft and test fired. Aluminum tubes/HNAB were drawn to 2 gr/ft and test fired to qualify HNAB Lot 1281-11-01 made at Pantex.
Date: December 31, 1972
Creator: Lichte, H.W.
Partner: UNT Libraries Government Documents Department

He synthesis. Quarterly report, October--December, 1971

Description: Existing supplies of bis-trinitroanisole and picryl hydrazine were used to make 2 kg of bis-hexanitrohydrazobenzene. Development of the HNAB recrystallization process was temporarily stopped due to the need to produce a supply of the intermediate products (picryl chloride and HNHB). Purchase orders for DINOL and DNPIA required for synthesis of AFNOL were awarded.
Date: December 31, 1972
Creator: Hayes, D.V. & Honea, F.I.
Partner: UNT Libraries Government Documents Department

Pressing technology. Quarterly report, October--December, 1971

Description: A new process has become available that might be useful for compacting PEX materials. The process is triaxial: it utilizes the familiar isostatic compression vectors to form a billet and for lateral reinforcement while a shear action of higher pressure is included over the billet ends with a mechanical punch. The 20-inch press has been inspected at the site of manufacture and is in transit to Pantex Plant.
Date: December 31, 1972
Creator: Harrell, J.D.
Partner: UNT Libraries Government Documents Department

Encapsulation of explosive particles by parylene. Quarterly report, October--December, 1971

Description: Parylene is the generic name for members, e.g. parylene N,C,D of a thermoplastic polymer series developed by Union Carbide (Reta is a trade name for the materials). All of the members are laid down by a vacuum, vapor deposition process. The properties and uses for each member of the series differ from each other, but collectively the Parylenes have a wide range of applications. Gas permeability and moisture vapor transmission of Parylene C are very low. These properties make Parylene potentially very useful with or near explosives or components. One of the forms, Parylene C--the monomer of dichloro-di-p-xyly-lene--is potentially attractive. Its density is 1.29 g/cc. In this study the initial emphasis will be on the feasibility of coating HE particles. Substrates of diminishing particle size will be encapsulated to establish the particle-size limitation of the process.
Date: December 31, 1972
Creator: Sandoval, J.
Partner: UNT Libraries Government Documents Department

Metallized explosives. Quarterly report, October--December, 1971

Description: In addition to the DTA, X-ray diffraction, and Henkin test results on silvered BTF reported earlier; impact sensitivity via drop hammer and chemical reactivity via gas chromatography were conducted with all results generally indicating no significant compatibility problems. One larger batch, {approximately} 15 grams of silvered BTF was made from which pressed-to-shape pellets were fabricated at a desired density of approximately 90% of TMD.
Date: December 31, 1972
Creator: Slape, R.J.
Partner: UNT Libraries Government Documents Department

Particle size analysis of HMX

Description: Particle size distribution of three batches of Hercules-supplied HMX were analyzed. The sizes were determined by the specified sieve analysis having a nest range of 180 through 10 ..mu... These sieves were used to comply with Hercules requests; they are also those customarily used for HMX qualification. Five analyses for each batch were performed on the material >10 ..mu.. and duplicates analysis for the <10 ..mu.. material.
Date: October 27, 1972
Creator: Duncan, A.A.
Partner: UNT Libraries Government Documents Department

Analysis of nuclear stimulation of Reservoir A, U. S. S. R

Description: Following stimulation by three nuclear explosives, the field rate of production of ''Reservoir A'', U.S.S.R., increased very significantly. The potential profitability of projects such as Reservoir A and some of the possible causes for the increased rate of production are reviewed.
Date: June 28, 1972
Creator: Howard, J. H.
Partner: UNT Libraries Government Documents Department

SPINFIN: A computer program for trajectory simulation of flight vehicles with semi-passive roll control systems

Description: This report presents the trajectory computer program, SPINFIN. The program has been in use at Sandia Laboratories, Livermore, for flight simulation of those reentry vehicles which utilize a class of semi-passive fin roll-control systems. As such, it has served as an important design tool for some time. The report includes a presentation of the prominent features of the mathematical model which describes the vehicle aero-, flight-, and control-system dynamics. Additionally, detailed descriptions of the program input and output are provided as a user`s guide.
Date: July 1, 1972
Creator: Kryvoruka, J. K.
Partner: UNT Libraries Government Documents Department

Utilization of Z Plant for Plowshare Program: Study 4

Description: The conversion of plutonium nitrate to metal, the fabrication and assembly of plutonium devices and the recovery of scrap by Atlantic Richfield Hanford Company (ARHCO) has been studied previously in support of the Plowshare Program. Previous studies and Plowshare Task Force meetings along with a teletype directive form the bases for Study 4. The major changes and additions in Study 4 as compared to Study 3 are: a complete new building is considered as an alternate to the use of existing facilities, waste storage tankage is added to capital costs, operating costs are divided into labor, material and overheads, and are based on 1976 dollars, depreciation on capital costing is excluded from unit costs, and features of the existing ARHCO plant coupled with comments on actual operating experience and further explanation of the flowsheets are added to the appendix.
Date: August 23, 1972
Creator: Bruns, L. E.
Partner: UNT Libraries Government Documents Department

{sup 55}Fe concentration and specific activities in north Pacific marine organisms

Description: The {sup 55}Fe from nuclear weapons testing which enters the ocean is in a chemical form which is much more readily available for biological uptake than is stable oceanic iron. This property of {sup 55}Fe results in up to 1000-fold higher {sup 55}Fe specific activities in marine organisms than is present in seawater. Dilution of {sup 55}Fe by stable iron from anthropogenic sources or natural sources appears to be responsible for the lower specific activity in mid-latitude marine organisms than in organisms from high latitudes. The half-time for {sup 55}Fe in harvested salmon from the west coast is essentially the same as the half-residence time for stratospheric radioactive debris. This fact suggests that {sup 55}Fe reaching the ocean surface is available for biological uptake for a relatively short time. Measurements of {sup 55}Fe specific activities in certain crustacea predacious fish than in the phytoplankton. What we have learned about the behavior of the radionuclide {sup 55}Fe in the ocean environment may well apply to other fallout radionuclides, and a consideration of this fact should be included in estimating the potential hazard of the release of radionuclides to the marine environment. These data suggest that the release of radioiron from a reactor to the oceans at northern latitudes may have a 10 to 30-fold greater impact than releases of radioiron at mid-latitudes.
Date: December 31, 1972
Creator: Jenkins, C. E. & Langford, J. C.
Partner: UNT Libraries Government Documents Department