| An Analytical Modularized Treatment of Autopilots for Guided Projectile Simulations |
AUG 85 |
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| Authors:
E. M. Friedman; M. J. Amoruso; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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 | An innovative technique was developed by which piecewise analytical solutions to guidance and control transfer functions were obtained for use in larger but lower frequency computer simulations of guided munitions. Numerical integration, which is typically used to treat such transfer functions, significantly reduces the integration time step, and increases computer execution time for the overall simulation. The modularized analytical approach accommodates integration time steps associated with the lower frequencies of ... |
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| Blending Stick Propellant |
AUG 85 |
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| Authors:
J. J. Rutkowski; E. R. Bixon; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| Development of an artillery propelling charge containing stick propellant created the need for a new blending process. Early propellant lots produced for product improvement testing demonstrated poor uniformity, but further analysis indicated the propellant was not adequately blended. This report analyzes the blending procedure used during production of the propellant lots that resulted in poor uniformity and illustrates the poor distribution of the stick propellant. A proposed blending procedure is ... |
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| EMACK Railgun Firing Test Report Number 9 |
JUN 85 |
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| Authors:
A. E. Zielinski; J. A. Pappas; W. Williams; G. Zsidisin; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| The test firing of the EMACK railgun test bed was successfully conducted on 20 December 1983 at a peak system current of 430 kiloamperes and 1. 6 megajoules stored inertially in the homopolar generator. Current was successfully commutated into the launcher in 800 microseconds. The D1.1 projectile in-flight shadowgraphs were taken with a 150 KV Hewlett Packard flash x-ray system and a motion picture of the muzzle arc was taken ... |
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| Investigation of Damaged Lands of M185 Cannon Mounted on the 155-mm M109A1 Howitzer |
JUN 85 |
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| Authors:
R. J. Kopmann; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| This is a final report on the investigation into the prime cause of damaged lands in the M185 cannon and into the safety of firing fielded ammunition in an M185 cannon with land damage. It was determined that firing projectiles from an unseated position in the chamber can result in flattened and stripped lands representative of that reported near the commencement of rifling. When compared to an undamaged tube with ... |
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| Feasibility of a Microprocessor Controlled Recoil Mechanism for Large Caliber Artillery Weapons |
MAY 85 |
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| Authors:
G. Y. Jumper Jr.; S. G. Floroff; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| Artillery recoil mechanisms provide energy absorption by throttling hydraulic oil through a variable orifice. This orifice is a function of the recoil stroke and is mechanically a fixed system. Variations in hydraulic oil characteristics, maximum applied impulse, and manufacturing tolerances in throttling orifice construction cause non-optimal energy absorption. This report proposes a closed-loop feedback controlled servovalve to optimize energy dissipation regardless of system variables. Possible control algorithms are presented. Recoil ... |
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| Design and Testing of a Pulsed Current Transformer |
APR 85 |
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| Authors:
A. E. Zielinski; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| A pulsed current transformer was built and tested. Data substantiating the theoretical model was obtained. The four turn, coaxial geometry transformer had a mean radius of 12 inches. It used copper tubing for the secondary and number 6 gage wire for the primary. Under short circuit conditions, the time-to-peak current was 70 microseconds and a time averaged turns ratio of 3.75 was produced by the transformer. The theoretical model yielded ... |
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| Metal Armatures for Railguns |
MAR 85 |
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| Authors:
G. L. Ferrentino; W. J. Kolkert; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| Proper design of a metal armature for a railgun projectile is vital to obtain optimal performance and to reduce rail wear. Previous armature designs did not include the contribution of friction to the heat of the rail-armature interface. A simplified model of the electromechanical heating of the armature was developed and used to redesign an armature for the EMACK railgun at the Armament Research and Development Center. A new integrated ... |
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| Minimum Nonpropagation Criteria for Load, Assemble, and Pack (LAP) facilities for the BLU-97/B Submunition |
MAR 85 |
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| Authors:
W. M. Stirrat; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| As part of an Army-wide expansion and modernization program, the safe-separation distance for production of BLU-97/B submunitions was studied and determined in a series of tests. The results were used to establish safety criteria for new load, assemble, and pack (LAP) facilities and also existing facilities under renovation. The program to determine the necessary minimum nonpropagation distance was conducted in four phases: Phase 1. Pallets of 16 submunitions separated by ... |
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| Design of Ammunition Gripper for 155-mm Robotic Howitzer |
MAR 85 |
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| Authors:
R. M. Nitzsche; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| A robotic gripper which picks up 155-mm projectiles and cylindrical propelling charges and holds them securely while they are moved through any orientation within a self-propelled howitzer is described. The exact tasks that the gripper must perform are studied and four preliminary concepts are shown. One concept is developed. The development effort includes a kinematic analysis, force analysis, stress analysis, and a complete drawing package. |
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| Comparison of Paper Molding and Slurry Processes for Manufacture of 60- mm M204 and 81-mm M205 Propelling Charge Containers |
FEB 85 |
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| Authors:
A. F. Taschler; H. Shimm; A. Zaycer; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| A ballistic test program was conducted and the results were statistically evaluated to compare nitrocellulose mortar increment containers made by both the paper molding process and the slurry process. These containers were for the M204 propelling charges for the 60-mm mortars and for the M205 propelling charges for the 81-mm mortars. |
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| U.S. Army Electromagnetic Launcher Facility |
JAN 85 |
28 pages |
| Authors:
G. L. Ferrentino; J. A. Pappas; H. L. Moore; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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 | The Electromagnetic Launcher Facility at ARDC is described. Experimental equipment, including the laboratory's MJ railgun testbed and support hardware, are detailed. |
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| Electromagnetic Braking of a Metallic Projectile in Flight |
DEC 1984 |
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| Authors:
J. Bennett; T. Gora; P. J. Kemmey; W. J. Kolkert; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| A sample model for the electromagnetic deceleration of a moving metallic projectile is described. This model incorporates the influence of magnetic field parameters, time-dependent field diffusion, and device geometry to approximate the braking action. The model predicts that a viable experimental braking device can be designed. |
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| Evaluation of Titanium Diboride Gun Tube Coatings |
NOV 1984 |
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| Authors:
A. J. Bracuti; L. A. Bottei; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| Samples of AISI 4140 and AISI 4130 steel were coated with the intermetallic compound titanium diboride (TiB2) by means of a relatively low temperature electrodeposition process which does not harm the steel substrate. The erosion resistance of these samples was evaluated at various pressure levels in the U.S. Army Armament Munitions and Chemical Command vented closed bomb test fixture using laboratory prepared M30 propelling charges. The coasted samples apparently eroded ... |
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| Mechanical Behavior of Gun Propellant during High Acceleration, |
OCT 1984 |
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| Authors:
M. Y. D. Lanzerotti; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| The mechanical behavior of M30 propellant subjected to an acceleration greater than 10,000 g has been studied in an ultracentrifuge. Deformation of the propellant is measured as a function of maximum applied stress. Above an acceleration threshold, recovery of the propellant deformation is observed under zero stress. Failure is found to occur when the tensile strength is exceeded. |
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| The Crystal and Molecular Structure of a New Propellant Compound Triaminoguanidinium Azide Nitrate (TAZN), |
OCT 1984 |
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| Authors:
A. J. Bracuti; J. M. Troup; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| A new high nitrogen propellant compound, triaminoguanidinium azide nitrate (TAZN), has been discovered. Single crystal x-ray diffraction data were obtained. The crystal and molecular structure of this orthorhombic (Pbca) compound was determined. Comparisons between the structures of TAGN and TAZN are discussed with emphasis upon possible hydrogen bonding. Triaminoguanidinium salts (TAG+) apparently accelerate the burning rates of cyclic nitramine (RDX, HMX) based propellants, the nitrate (TAGN) with its relatively low ... |
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| User's Guide to the Picatinny HEMP Computer Code |
SEP 1984 |
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| Authors:
G. Randers-Pehrson; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| An implementation of the HEMP code on the Control Data 6600 Computer is described. The original code, by Mark Wilkins, has been restructured for increased execution speed and reduced memory requirements. Additional features such as line dropping and new gridding options have been included. This guide is intended for use with the original HEMP User's Manual by E. D. Giroux. |
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| Computer Simulation of Artillery Safing and Arming Mechanism in Aeroballistic Environment (Involute Gear Train and Straight-Sided Verge Runaway Escapement) |
JUL 1984 |
192 pages |
| Authors:
F. R. Tepper; G. G. Lowen; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| A computer simulation was developed for a complete artillery safing and arming (S&A) mechanism which must operate in a projectile that experiences spin, precession, and nutation. This mechanism contains a straight-sided verge runaway escapement, a two pass involute step-out gear train, and a spin driven rotor. The mathematical model treats three motion regimes of the associated escapement (i.e., coupled motion, free motion, and impact). The computer program is well adapted ... |
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| The Crystal and Molecular Structure Refinement of 1,2,3- Triaminoguanidinium Chloride |
JUN 1984 |
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| Authors:
A. J. Bracuti; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| The crystal structure of triaminoguanidinium chloride (TAGC1) was refined using three dimensional x-ray diffraction data. The hexagonal structure (P6(3)/m) has unit-cell dimensions: a=b=7.480(1) A and, c=6.218(1) A. The structure consists of layers of ions parallel to (00 iota) located at + or - 1/4 c held together by van der Waals forces. The C-N bond length is 1.325(2) A and the N-N bond length is 1.411(4) which agree quite well ... |
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| Dynamic Mechanical Properties of Candidate Lova and Nitrocellulose Base Gun Propellants after up to 18 Months of Accelerated (High Temperature) Aging |
MAY 1984 |
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| Authors:
J. Pinto; D. Georgevich; S. Nicolaides; D. A. Wiegand; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| Several candidate low vulnerability (LOVA) propellants and several nitrocellulose (NC) base (single, double, and triple) propellants have been subjected to accelerated aging at 65.5 C and mechanical properties measured. The propellants were investigated in compression after 0, 1, 2, 3, 6, 12, and 18 months. Measurements were made at -45 C and 23 C at a strain rate of approximately 10/sec. Little or no change in the compressive strengths of ... |
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| Shock Front Pumped Stokes and Anti-Stokes Reflectivity Contributions |
MAR 1984 |
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| Authors:
P. Harris; H. N. Presles; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| It is claimed that mass density shock pumped excited states can be converted to Stokes and Anti-Stokes radiation which would contribute to shock front optical reflectivity signals in liquid water at 5.9 kbar. The experimental status and relevant theory are described in detail. |
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| Improving Quality and Performance of Leads Loaded with Composition A-5 |
MAR 1984 |
31 pages |
| Authors:
R. Ritchie; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| A study was conducted to improve the quality and performance of leads loaded with Composition A-5. The effect of parameters, such as stearic acid content, HMX content, and RDX particle size, on Comp A-5 sensitivity was examined. Parameters affecting load uniformity and output studied were A-5 particle size and density. Results show A-5 particle size had the greatest effect on lead performance and quality. |
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| Minimum Nonpropagation Distance for the Cloud Detonator of the XM130 SLUFAE Rocket |
FEB 1984 |
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| Authors:
W. M. Stirrat; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| As part of an Army-wide expansion and modernization program, safe separation distance criteria for the cloud detonator of the XM130 SLUFAE rocket and its assembly table were determined after study and testing. Two test series were involved: (1) a standard nonpropagation series for present table spacing of the detonators and the use on future conveyor systems, and (2) a series of structural integrity tests to determine the adequacy of the ... |
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| The Effect of Aging on the Properties of Composition B |
FEB 1984 |
|
| Authors:
M. S. Kirshenbaum; L. Avrami; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| Selected safety and characterization tests were conducted on Composition B from a 31 year old lot in order to evaluate the effect on aging on the properties of the explosive. The results of the tests are compared to those for Composition B from recent lots. The tests included impact sensitivity, friction sensitivity, electrostatic sensitivity, explosion temperature, differential thermal analysis, thermogravimetric analysis, autoignition temperature, large scale gap test, growth characteristics, and ... |
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| Theoretical Calculations of H(2) CARS Spectra for Propellant Flames |
DEC 1983 |
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| Authors:
J. Fendell; L. E. Harris; K. Aron; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| High energy pure rotational H(2) CARS transitions have recently been observed in several spectral regions, most notably, the NO and CO CARS regions. H(2) CARS is of interest because hydrogen is a major combustion product of propellants, especially nitramine propellants. For this reason, calculations were performed to assign the observed H(2) transitions. For this particular case, the calculations of interest are for the observed S- and Q-branch transitions of H(2) ... |
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| Cars Spectroscopy of Propellant Flames |
NOV 1983 |
38 pages |
| Authors:
L. E. Harris; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
|
| Broadband coherent anti-stokes Raman scattering (CARS) spectra were obtained from both the reaction zone and postflame regions of CH(4)/N(2)O flames. The temperature and concentration profiles obtained from both N(2) and N(2)O flames were used to understand the elementary processes occurring in CH(2) /N(2) flames. In addition, N(2) and CO vibrational spectra were used to obtain concentration and temperature profiles by a least-square fit to model calculations. The results obtained were ... |
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| Process Controls Required for Large Scale Production of M796 Impulse Cartridges |
NOV 1983 |
|
| Authors:
D. Seeger; G. C. Gratkowski; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| This report describes the process controls utilized in producing high quality M796 Impulse Cartridges. In the initial study, emphasis was placed on material controls and manufacturing techniques to arrive at the desired item functioning characteristics. This led to the evolution of production of the impulse cartridge from a labor intensive hand line through development and fabrication of an automated machine for assembly. |
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| Simplified Thermal Transient Test for Electro Explosive Devices |
SEP 1983 |
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| Authors:
Yong Won Kwon; Wallace E. Voreck; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| A simplified thermal transient test system for bridgewire-initiated electro explosive devices is described. The method used is that developed by Rosenthal. An automated data recording system and computer analysis of results are included. |
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| Fire Retardant Treatments for Ammunition Packaging |
AUG 1983 |
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| Authors:
Robert L. Fortunato; Harry J. Reeves; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| An analysis of fires at ammunition supply points showed that packaging materials were the main cause of the spread of fires. In the case of packaged tank and artillery ammunition, the external wooden box and the internal fiber container were major contributors to the ammunition fires. Described in this report is work performed to optimize fire-retardant treatment systems for ammunition packaging and to develop an end item pack. The results ... |
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| N(2) and CO Vibrational CARS and H(2) Rotational CARS Spectroscopy of CH(4)-N(2)O Flames |
AUG 1983 |
|
| Authors:
Kenneth Aron; L. E. Harris; Joanne Fendell; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
|
| Broadband CARS (coherent anti-Stokes Raman scattering) spectra of N(2) and C0 were obtained from the post-flame gases of rich CH(4)-N(2)O flames by the use of the nonplanar BOXCARS technique. The temperature and concentration of both N(2) and CO in these flames, estimated from CARS spectra with the aid of model calculations, agreed with standard thermochemical predictions. In addition, several pure rotational H(2) CARS transitions, most of which had previously been ... |
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| Millimeter Wave Active Sensing Technology for Self-contained Munitions. |
AUG 1983 |
|
| Authors:
A. J. Hunton; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| Active millimeter wave (MMW) sensing technology is playing an increasing role throughout the DoD research and development community in the area of Self Contained Munitions (SCMs), autonomous missiles and armament primarily intended for air and surface launched standoff antiarmor weapon systems. Each type of SCM, which requires fire-and-forget search, detection, discrimination and warhead aiming sensing functions, places varied operational, packaging and performance specifications on its MMW sensor subsystem. This paper ... |
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| Safe Separation Investigations for M483/M509 Projectile Lap Facilities, |
02 JUN 1982 |
|
| Authors:
R. M. Rindner; W. M. Stirrat; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
|
| In support of the U.S. Army Plant Modernization Program, a continuing experimental program to establish safe separation (nonpropagation) distance between units of in-process energetic materials and/or ammunition end items is currently underway by ARRADCOM, for the purpose of upgrading existing and develop new, manufacturing and LAP (load, assemble and pack) explosive facilitiees. The objectives of this safety program are two fold; 1) to supplement and/or modify the present safety regulations ... |
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| Dielectric Constant Measurements on Lead Azide Single Crystals |
SEP 1980 |
14 pages |
| Authors:
W. L. Garrett; P. J. Kemmey; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
|
| The dielectric constants of lead azide in single crystal form were measured in the three crystallographic directions and found to be unusually large and highly anisotropic. The dielectric constants are fairly independent of temperature over the range of 100 K to 370 K and of frequency over the range of 100 to 1000 Hz. The dielectric constants of the azides of T1, Na, and K were also measured and compared ... |
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| Sensitivity of Some Explosive/Brine Mixtures |
AUG 1980 |
19 pages |
| Authors:
M. S. Kirshenbaum; J. R. Leccacorvi; S. Portnoy; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
|
| Threshold levels were determined for the dried explosive- and propellant-contaminated salts derived from the decontamination brine solution used for the demilitarization of chemical munitions at the Chemical Agent Munition Disposal System Directorate demilitarization facility. Impact, friction and thermal sensitivity tests revealed that the thermal hazard was the controlling factor in determining the safe explosive concentrations. The test method used shows there is no thermal hazard if the total concentrations of ... |
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| Derivation of the Kinematic Properties of the Pin Pallet Runaway Escapement. |
OCT 1979 |
|
| Authors:
C. W. Janow; F. R. Tepper; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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| The operation of the pin pallet runaway escapement has been characterized in terms of several kinematic properties, i.e., velocity ratio, torque transfer ratio, and efficiency. A computer program has been written which analyzes both the entrance and exit phases of the engagement cycle. The influence of changes in the operating center distance has also been investigated by appropriate computer runs. As a result of this study, an analytic tool for ... |
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| Chromate-Free Method of Preparing Aluminum Surfaces for Adhesive Bonding. An Etchant Composition of Low Toxicity |
MAY 1978 |
|
| Authors:
William J. Russell; Elizabeth A. Garnis; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
|
| In a continuing effort to minimize the use of toxic and hazardous materials for the adhesive bonding of aluminum, a suitable alternative for the standard chromate-containing FPL etchant is being sought. This has resulted in the development of a chromate-free etchant of minimal toxicity (etchant P2) which consists of an aqueous solution of sulfuric acid and ferric sulfate. Surfaces produced with the new etchant composition when adhesively bonded result in ... |
|
| DUD Investigation of M69 Electric Detonator |
APR 1978 |
50 pages |
| Authors:
Joseph O. Juliano; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
|
| During an investigation on the 105Mm M456A1 HEAT Cartridge, it was found that the M509A1 Fuze containing the M48 Detonator was not Detonator Safe when initiated in the unarmed position. Since the M48 Detonator was found to be the primary source of the problem the smaller M69 Detonator was selected to replace it. Initial Laboratory and ballistic testing with the M69 Detonator resulted in an abnormally high dud rate. An ... |
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| Analysis of Impurities in Composition B by Thin Layer Chromatography |
APR 1978 |
20 pages |
| Authors:
T. H. Chen; M. Gilford; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
|
| A thin layer chromatographic procedure was developed to identify alpha-TNT associated impurities in Composition B. The method involved reducing RDX and alpha-TNT levels in the solubilized Composition B sample before two- dimensional chromatographic developing. Impurities were identified after applying ethylenediamine reagent. Color development, fluorescence quenching, and R sub f values were compared to those established for a variety of impurities known to be present in Military Grade alpha-TNT. Six fragments ... |
|
| An Evaluation of Liquid Explosives for Foxhole Digging. |
APR 1978 |
|
| Authors:
Shepherd Levmore; Robert T. Schimmel; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
|
| Five new explosive formulations were screened for possible use in foxhole digging. Three of them were based on nitromethane/nitroethane/RDX (NM/NE/RDX), with viscosities varying from liquid through slurry to paste. The other formulations were: (1) a two-part gelled slurry mix, DBA-208X, submitted by the IRECO Chemical Corporation, and (2) a two-part liquid formulation, LLTX G-2, submitted by the Explosives Corporation of America (EXCOA). After testing, the liquid NM/NE/RDX was selected as ... |
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| Engineering Feasibility Study for Elimination of Nitroglycerin from Solvent Vapors |
MAR 1978 |
32 pages |
| Authors:
C. D. Mathes; J. A. Carrazza; A. Tatyrek; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
|
| This report, based on laboratory tests, covers the evaluation of two distinct methods of separating the solvents acetone and ethyl alcohol from nitroglycerin (NG) in an air stream from a multi-base propellant-drying facility. The first method employed a semi-permeable membrane which has been used effectively to remove moisture from a gas stream. The membrane, however, did not effectively remove the NG vapor from the solvent vapors. The second method evaluated ... |
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| Photochemical Studies of Secondary Nitramines. Part 2. Ultraviolet Photolysis and Ozonolysis of RDX in Aqueous Solutions |
JUN 1977 |
30 pages |
| Authors:
Andrew F. Smetana; Suryanarayana Bulusu; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
|
| The purpose of this study was to determine the feasibility of chemical degradation of RDX by ultraviolet-ozone process which had been previously developed for eliminating TNT from pink water. A study of UV photolysis at 254, 300 and 350 nm wavelengths, ozonolysis alone and a combination of O3 and UV (350 nm) on aqueous solutions of RDX was undertaken. The results indicate that O3 + UV in combination efficiently degrade ... |
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