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Works: 46 works in 46 publications in 1 language and 46 library holdings
Publication Timeline
Production engineering of metal parts for little john rocket motor xm26e3 with fin and fin barrel assembly ( Book )
1 edition published in 1964 in English and held by 1 library worldwide
Several components on the production engineered XM26E3 rocket motor provided a reduction in cost over the corresponding components of the XM26E1 rocket motor through savings in tooling, labor and materials costs. Cost savings for the production engineered shell assembly were not significant; however, reliability was increased by the elimination of welds. The production engineered one-piece nozzle eliminated close tolerances required at the mating surfaces between the nozzle and nozzle tip of the two-piece assembly and will eliminate a cause for possible rejects through misalignment of parts. The production engineered fins showed an increase in cost over the original fins; however, they have an advantage in that external disassembly and replacement of fins was made possible. (Author)
Linear proportional control hot gas valve for secondary injection ( Book )
1 edition published in 1964 in English and held by 1 library worldwide
Two linear proportional control hot gas valves were tested as an integral component of a liquid rocket chamber bleed system. One valve relied entirely on the refractory metal, tantalumtungsten alloy (Ta-10W), whereas the second valve used an arrangement of internal heat sinks, ceramic insulators and ablative plastic inserts to serve as thermal protection for the tungsten surfaces of the critical components. The refractory metal valve failed after three seconds of operation due to severe degradation of the Ta-10W alloy components. In contrast, the composite materials valve successfully completed four 12 sec duration tests, representing 48 sec of accumulative throttling operation without any parts replacement. The valve demonstrated excellent structural durability and reproducible control capability during cyclic throttling. It is firmly believed this design is capable of at least 20 sec of continuous throttling operation under the design mass flows of 5140 F combustion gases. (Author)
Effect of a bare explosive against a metal plate ( Book )
1 edition published in 1963 in English and held by 1 library worldwide
A semi-rational formula is developed for measuring the effects of a bare explosive against a metal plate. A comparison with an experiment shows good agreement. The purpose of this report is to derive a simple formula to predict the relative effect of a given explosive against beams of different dimensions and different materials. (Author)
A description of the use of semiconductor integrated circuits for artillery timers and other ordnance material ( Book )
1 edition published in 1964 in English and held by 1 library worldwide
The recent development of the Semiconductor Integrated Circuit as a possible milestone in the evolution of Timers and Programmers for Ordnance Materials is recognized. A prototype of a Digital Integrated Circuit Artillery Timer is described and cost considerations and performance objectives are compared with mechanical timers now used by the Army. (Author)
Evaluation of 52100 hypereutectoid steel for the m151 2.75-inch rocket warhead ( Book )
1 edition published in 1967 in English and held by 1 library worldwide
Hypereutectoid Type A151 E52100 steel was evaluated by the Ammunition Engineering Directorate's Ammunition Engineering Laboratory for its suitability as an alternate material for the two-piece pearlite malleable iron XM151 Warhead of the 2.75-Inch Rocket System. (Author)
Considerations of the vulnerability of electrically initiated explosive systems ( Book )
1 edition published in 1964 in English and held by 1 library worldwide
The paper discusses means of controlling, through operation procedures and design, accidental functioning of an explosive system. It describes mechanical activation as well as electrical (hot-wire, film-bridge, explodingbridgewire) systems, comparing them in terms of invulnerability. An exploding-bridgewire initiator was found to be the least vulnerable electric initiator. (Author)
Malfunction investigation of rocket, practice, 3.5-inch: m29a2 and rocket, smoke, 3.5-inch: wp, m30 (ruptured motor bodies) ( Book )
1 edition published in 1963 in English and held by 1 library worldwide
Malfunction investigations were made of practice rockets and smoke rockets. The rockets malfunctioned because the igniter functioned with a force sufficient to split the motor from end to end, partially disrupted the tail assembly and split the rear barrel assembly from the launcher. It was determined that these malfunctions were caused by the presence of a lap at the outer surface and of intermediate transformation products in the microstructure which acted as a focal point for stress concentration, reducing the effective cross-sectional area, and lowering the impact and tensile strength of the motor body; excessive nonmetallic inclusions in the steel being drawn into stringers in the tubing wall parallel to the axis; severe quenching after heat-treatment to meet required physical condition, and cracking at the nozzle mouth due to forging and heat-treating. (Author)
Feasibility study of air dashpot for delayed arming of m52a2 pd fuze ( Book )
1 edition published in 1963 in English and held by 1 library worldwide
A program was initiated by Picatinny Arsenal to redesign the air dashpot mechanism for delayed arming of the M52A2 PD Fuze. A delay device utilizing the principles of bleeding air through a porous restrictor was adapted into the fuze. A workable unit was evolved which showed satisfactory static and ballistic test results. As a result of tests conducted, mechanism appeared completely feasible and was recommended for further development. (Author)
Experimental study of liquid rocket simulation of solid propellant rocket exhaust characteristics ( Book )
1 edition published in 1964 in English and held by 1 library worldwide
A substantial cost saving can be realized if a small liquid propellant rocket engine, using cheap propellants, can be used to screen nozzle materials for eventual use with large solid rocket motors using costly propellants. Work was completed in which the nozzle erosion experienced in a solid rocket motor using AHH propellant was simulated by a liquid propellant engine using white fuming nitric acid and benzene. The work was conducted at a one-to-one scale ratio and the approach taken was to simulate erosion by simulating nozzle environment. Approximate simulation of nozzle erosion was achieved. Additional work is recommended to perform simulation of aluminized propellants and study scaling effects. (Author)
A test to determine the cause of barrel erosion in the 40mm m75 launcher ( Book )
1 edition published in 1967 in English and held by 1 library worldwide
The objective of this study was to determine the effect on the 40mm M75 Gun barrel wear using four different cartridge case systems (using the M169 Cartridge Case series). On the basis of test results, the present two-piece cartridge should be replaced with a single-chamber cartridge case. Although the two-piece cartridge case with talc additive produces results comparable with the single-chamber case, use of the single-chamber case would result in substantial cost savings as well as eliminating a source of system malfunctioning. This gun is part of the M5 Weapon System for Helicopters. (Author)
Aeroballistic study of the 40mm sm385 projectile ( Book )
1 edition published in 1964 in English and held by 1 library worldwide
A feasibility study was initiated by the Air Force to investigate the possibility of mounting the 40mm XM75 Launcher in a pod on a fixed wing aircraft. This increased the velocity of the firing platform from which the launcher must operate to 300 knots from the helicopter velocity of 140 knots. Although the XM385 Projectile has been successfully fired at 225 knots, a question was raised concerning the stability of the round at 300 knots. Because of the possibility of instability existing and the data available being insufficient to arrive at a definite conclusion, Picatinny Arsenal conducted a study of the XM385 Projectile's characteristics. (Author)
X-ray stress analysis of the bauschinger effect in metals ( Book )
1 edition published in 1967 in English and held by 1 library worldwide
As a result of tensile tests performed on fired 175mm shell bodies, it was observed that the yield point was lower after loading the shell in set-back. A sizeable difference in yield strength was measured between as-fired and unfired shells with little difference in ultimate tensile strength. One possible cause of this phenomenon is the Bauschinger Effect. The Bauschinger Effect states that a specimen which is plastically strained in one direction and along one axis has a greater yield strength for that direction, but reduced loading strength in the opposite direction. To prove the magnitude to which this material would undergo a reduction in yield, X-ray diffraction measurements were made of beams cut from specimen shell bodies. X-ray stress measurements were made while the beam was maintained under different loads. A computer program was developed to calculate residual stress. (Author)
A computer program to determine acceptance criteria and the operating characteristic curve when sampling variables (quality control) ( Book )
1 edition published in 1967 in English and held by 1 library worldwide
A variable plan for acceptance inspection is based upon the sample mean and the sample standard deviation. This program computes a value K, such that the sample mean plus K times the sample standard deviation will indicate the acceptability of a lot. If the specified upper limit is exceeded, the lot is not acceptable. This program will compute K from a given sample size and one point on the operating characteristic curve, or will compute K and the sample size from two points on the operating characteristics curve and will then draw the operating characteristics curve
Investigation of aluminum foil pressure-sensitive tapes for sealing ammunition items ( Book )
1 edition published in 1963 in English and held by 1 library worldwide
Four aluminum foil tapes were evaluated for an environmental seal on ammunition items. Three tapes met all of the requirements for sealing under 3 psi internal air pressure and satis factory adhesion after environmental condition ing in accordance with MIL-STD-354 and 355. All the tapes were compatible with tetryl, cyclotol, RDX, Composition B and PETN. Pressure exerted upon application of the tape was found to be a critical factor. It was concluded that a revised MIL-T-11291 Specification (Tape, Adhesive, Aluminum-Backed (For Use With Ammunition), 24 July 1951) could be used for procurem of the tapes
Development of xml24 (green gag) propelling charge for the l75mm gun ( Book )
1 edition published in 1964 in English and held by 1 library worldwide
A green bag charge was developed using an 0.037 web, MP, M6 Propellant at a charge weight of about 17 pounds. Ignition is by means of a base pad containing eight ounces of Al Black Powder. Ballistic reproducibility, both round to round and occasion to occasion was excellent. The green bag charge represents a significant performance improvement for Charge l for the 175mm Gun. The green bag charge concept complicates the logistic problem for the l75mm Gun since it can only be provided as a separate (and new) item of issue. However, its use should yield a substantial operational savings paritcularly for practice or training use. (Author)
Weapon-to-weapon propagation test i and ii ( Book )
1 edition published in 1964 in English and held by 1 library worldwide
An evaluation of weapon-to-weapon propagation involving quantitative blast parameter measurements was performed. Two cased donor charges -- one of 50 lbs., one of 100 lbs.-were fired in separate tests to ascertain the effectiveness of a barricade system in preventing acceptor charge detonation when the system is confined within a steel-reinforced concrete storage structure. The quantitative information resulting from these measurements is presented in tabular form. (Author)
Deficiency investigation of the 1-lb. tnt demolition block charge ( Book )
1 edition published in 1966 in English and held by 1 library worldwide
At Camp Clark in Nevada, Missouri, in August 1965, 100 1-lb. TNT Demolition Block Charges (Lot SOD 600-1) failed to function. The circumstance causing this malfunction was investigated by the Ammunition Engineering Directorate's Ammunition Engineering Laboratory. It was determined that these TNT charges failed to detonate because of insufficient energy from the initiating devices. To detonate these 1-lb. TNT block charges, only four types of blasting caps must be used -- M6 and M7 Blasting Caps (military) and JI and JII (commercial); if Primacord is used, the exact procedure in FM 5-25 must be followed: three snug turns around the block. Release of the lot was recommended based on these findings. (Author)
Value engineering and the importance of engineering documentation ( Book )
1 edition published in 1964 in English and held by 1 library worldwide
Value Engineering is often defined as a new name for the old game of Cost Reduction a rearrangement of familiar design concepts, but worst of all a synonym for production and industrial engineering. The improvement areas considered by the Value Engineer and generally applicable in its broader sense to industry as obvious areas of excessive cost are: (1) Design simplification of metal parts; (2) Materials; (3) Processes and manufacturing methods; and (4) Documentation cost. (Author)
A technique for artificial cavitation and detonation-wave shaping ( Book )
1 edition published in 1967 in English and held by 1 library worldwide
The purpose of the investigation was to determine the effect of discontinuities in explosives occurring as a result of the loading process, when the discontinuities were simulated by expanded polystyrene foam. The investigation was part of a larger program to determine the limits of permissible cavitation in certain shaped charges. It was hoped that the use of polystyrene foam would give precise control over the extent and location of (simulated) cavitation voids. (Author)
1 edition published in 1964 in English and held by 1 library worldwide
An easily set up measuring system capable of ascertaing attenuation values up to 40 db in the frequency range from 40 mc to 10 gc, in operation at Picatinny Arsenal, is described in detail. This study also describes the necessity for measuring attenuation. (Author)
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