Готові списки джерел за темами / Small-caliber ammunition

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Добірка наукової літератури з теми "Small-caliber ammunition"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 травня 2022

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Статті в журналах з теми "Small-caliber ammunition"

Wang, Jian, Guang Rong, and De Wu Huang. "Reliability Index Assignment and Application of Small-Caliber Ammunition." Advanced Materials Research 490-495 (March 2012): 490–94. http://dx.doi.org/10.4028/www.scientific.net/amr.490-495.490.

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Reliability index assignment is an important process in reliability design. On account of some engineering designers with less experience and irrationality for reliability index assignment, according to the characteristics of small-caliber artillery ammunition, the efficient principle and methods are introduced for adaption of the reliability index assignment in this paper. Taking the modification process in developing an aero demolition and incendiary bomb as an example, to analyze and improve tactical and technical indexes such as reliability and blasting power, the reliability index assignment and calculation were carried out by experts grading method for the reference to application

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Ampuła, Dariusz. "Random Forest in the Tests of Small Caliber Ammunition." Journal of KONBiN 52, no. 1 (March 1, 2022): 73–85. http://dx.doi.org/10.2478/jok-2022-0006.

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Abstract In the introduction of this article the method of building a random forest model is presented, which can be used for both classification and regression tasks. The process of designing the random forest module was characterized, paying attention to the classification tasks module, which was used to build the author’s model. Based on the test results, a random forest model was designed for 7,62 mm ammunition with T-45 tracer projectile. Predictors were specified and values of stop parameters and process stop formulas were determined, on the basis of which a random forest module was built. An analysis of the resulting random forest model was made in terms of assessing its prediction and risk assessment. Finally, the designed random forest model has been refined by adding another 50 trees to the model. The enlarged random forest model occurred to be slightly stronger and it should be implemented.

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Moretti, Jared D., Christopher M. Csernica, Jay C. Poret, Anthony P. Shaw, Nicholas E. Carlucci, Martin G. Seiz, and John D. Conway. "Evaluation of a Sustainable Pyrotechnic Tracer Composition for Small Caliber Ammunition." ACS Sustainable Chemistry & Engineering 5, no. 11 (October 3, 2017): 10657–61. http://dx.doi.org/10.1021/acssuschemeng.7b02623.

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Ma, Guangsong, Guanglin He, Yukuan Liu, and Yachao Guo. "Study of the Forming Characteristics of Small-Caliber Ammunition with Circumferential MEFP." Materials 13, no. 4 (February 17, 2020): 891. http://dx.doi.org/10.3390/ma13040891.

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To study the influence of the structural parameters of the ammunition liner of small-caliber ammunition on the forming characteristics of the projectile, an integrated circumferential multiple explosively formed projectile (MEFP) warhead with an integrated shell and the liner was initially designed, and the wall thickness of the liner is variable. LS-DYNA finite-element software is used to simulate the integral circumferential MEFP of the preliminary design, based on the numerical simulation results, the influence of the thickness at the center of the liner, and the curvature radius of the liner on the shape and velocity of the formed projectile. The numerical simulation results show that when the thickness of the center of the liner is constant and the curvature radius increases gradually, the velocity of the formed projectile decreases and the length: Diameter ratio of formed projectile decreases gradually. When the curvature radius of the liner remains unchanged, the velocity of the formed projectile decreases with the increase of the thickness of the center of the liner, and the shape of the formed projectile does not change significantly. The results show that when the design of integrating the shell and the liner was adopted for the integral circumferential MEFP warhead, the shape of the formed projectile is greatly affected by the curvature radius of the liner (curvature radius of inner and outer walls of the liner), but less by the thickness of the center of the liner. The velocity of the formed projectile is affected by the curvature radius of the inner and outer walls of the liner and the thickness of the center of the liner. Moreover, the influence of the thickness of the center of the liner on the velocity of the formed projectile is greater than that of the curvature radius of the outer wall of the liner.

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Abo El Amaim, Y., A. Fayed, T. Khalifa, and A. Salman. "Experimental Study on Penetration of Small Caliber Ammunition into Different Multilayer Compact Armors." Journal of Engineering Science and Military Technologies 17, no. 17 (April 1, 2017): 1–9. http://dx.doi.org/10.21608/ejmtc.2017.21738.

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Abo El Amaim, Y., A. Fayed, T. Khalifa, and A. Salman. "Experimental Study on Penetration of Small Caliber Ammunition into Different Multilayer Compact Armors." International Conference on Aerospace Sciences and Aviation Technology 17, AEROSPACE SCIENCES (April 1, 2017): 1–9. http://dx.doi.org/10.21608/asat.2017.22799.

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Yoon, Sang-Hee, Seok-Woo Lee, Young-Ho Lee, and Jong-Soo Oh. "A Miniaturized Magnetic Induction Sensor Using Geomagnetism for Turn Count of Small-Caliber Ammunition." Sensors 6, no. 7 (July 24, 2006): 712–26. http://dx.doi.org/10.3390/s6070712.

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Wingfors, H., K. Svensson, L. Hägglund, S. Hedenstierna, and R. Magnusson. "Emission Factors for Gases and Particle-Bound Substances Produced by Firing Lead-Free Small-Caliber Ammunition." Journal of Occupational and Environmental Hygiene 11, no. 5 (March 26, 2014): 282–91. http://dx.doi.org/10.1080/15459624.2013.858821.

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Hong, Li, He Zhang, and Qing Tian Fan. "Analysis and Design of the Reliability of a Wire Setting System." Advanced Materials Research 591-593 (November 2012): 67–70. http://dx.doi.org/10.4028/www.scientific.net/amr.591-593.67.

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Reliability as an important index occupies an important position in electronic time fuze design. Small and medium caliber ammunition could be set in wire form or wireless form. Wireless setting can be divided into several forms, electromagnetism induction setting, radio frequency setting, laser setting and so on. There are many existing disadvantages in this technique, such as weak EMI ability, complex structure and poor reliability, while wire setting has the advantages opposite them. A wire setting system for electronic time fuse was designed in this article. In allusion to the problems of low ammunition reliability in the experiment, a method that could detect the working condition of the fuze effectively is presented, and bring a great help for finding out the root of the poor reliability. The experimental results showed that the effective rate of the improved electronic time fuze reached 100% and timing accuracy reached +-3 ms. This study provides a reference for the design of the reliability of setting system.

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Ma, Wen Rui, and Guang He. "Effect of Strain Rate on the Simulation of MEMS Safety and Arming Device." Key Engineering Materials 609-610 (April 2014): 849–55. http://dx.doi.org/10.4028/www.scientific.net/kem.609-610.849.

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Under launch impact load, LIGA nickel that manufacturing MEMS fuze safety and arming (S&A) device will have obvious strain rate effect. By using finite element analysis software ANSYS/LS-DYNA, simulation models of a small-caliber ammunition MEMS fuze setback S&A device with strain rate effect and without strain rate effect were respectively established. The results of the two simulation modules were quite different. Comparisons between experimental results and simulation results show that simulation results considering strain rate effect agree well with experimental results, which proves strain rate effect should not be ignored in the simulation of MEMS S&A device.

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Більше джерел

Дисертації з теми "Small-caliber ammunition"

Деберний, Михайло Богданович. "Магнітно-абразивне оброблення головного обтікача макету ракети". Master's thesis, КПІ ім. Ігоря Сікорського, 2021. https://ela.kpi.ua/handle/123456789/46136.

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На основі аналізу питання недостатнього захисту від безпілотних літальних апаратів з допогомогою комплексів радіоелектронної боротьби, визначено, що в багатьох країнах використовують малокаліберні боєприпаси з програмованим підривачем. В процесі створення проекту було розроблено модель головного обтікача ракети, проаналізовано та спроектовано форму поверхні обтікача, а також оброблено носову частину спеціальним методом. Виготовлено макет головного обтікача ракети необхідної форми.
Based on the analysis of the issue of insufficient protection against unmanned aerial vehicles with the help of electronic warfare systems, it was determined that in many countries small-caliber munitions with a programmable detonator are used. In the process of creating the project, a model of the main fairing of the rocket was developed, the shape of the fairing surface was analyzed and designed, and the bow was processed by a special method. A model of the main fairing of the rocket of the required shape has been made.

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Книги з теми "Small-caliber ammunition"

United States. Government Accountability Office. Defense ammunition: DOD meeting small and medium caliber ammunition needs, but additional actions are necessary : report to the Honorable David R. Obey, Ranking Minority Member, Committee on Appropriations, House of Representatives. Washington, D.C.]: U.S. Government Accountability Office, 2005.

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Subcommittee, United States Congress House Committee on Armed Services Tactical Air and Land Forces. Department of Defense small-caliber ammunition programs and the associated industrial base: Before the Tactical Air and Land Forces Subcommittee of the Committee on Armed Services, House of Representatives, One Hundred Eighth Congress, second session, hearing held June 24, 2004. Washington: U.S. G.P.O., 2005.

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U.S. DEPT. OF THE ARMY. Army Ammunition Data Sheets for Small Caliber Ammunition: Technical Manual 43-0001-27 C2. PrepperPress.com, 2011.

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Тези доповідей конференцій з теми "Small-caliber ammunition"

Weinacht, Paul. "Characterization of Small-Caliber Ammunition Performance Using a Virtual Wind Tunnel Approach." In AIAA Atmospheric Flight Mechanics Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2007. http://dx.doi.org/10.2514/6.2007-6579.

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Silton, Sidra, and Bradley Howell. "Effect of Spin Variation on Predicting the Dynamic Stability of Small-Caliber Ammunition." In 47th AIAA Aerospace Sciences Meeting including The New Horizons Forum and Aerospace Exposition. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2009. http://dx.doi.org/10.2514/6.2009-310.

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Weinacht, Paul. "Validation and Prediction of the Effect of Rifling Grooves on Small-Caliber Ammunition Performance." In AIAA Atmospheric Flight Mechanics Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2006. http://dx.doi.org/10.2514/6.2006-6010.

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RATROUT, R., H. AL-TA’AMNEH, S. AL MAJALI, I. RAWASHDEH, H. AL MASRI, A. ALDARADKEH, A. AL SARDYAH, and S. OBEIDAT. "Obtaining a Correlation between Pressure Test Results of Small Caliber Ammunition According to Different Test Standards." In 30th International Symposium on Ballistics. Lancaster, PA: DEStech Publications, Inc., 2017. http://dx.doi.org/10.12783/ballistics2017/16862.

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Andreen, Steven D., and Brad G. Davis. "Risk Analysis of Live Fire Shoot House Containment Systems Against Multiple Projectile Impacts." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-23834.

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Abstract Many analytical and numerical models exist that can describe the effect of single projectile impacts on steel targets. These models are not adequate for the evaluation of live fire shoot house containment systems, which are subjected to repeated impact loading from small caliber projectiles over the lifetime of the structure. Models assuming perfectly rigid projectiles over-predict penetration depths. Models assuming rigid targets cannot predict any penetration, and hydrodynamic models are best suited to high velocity impacts well above the ranges of conventional ordinance. Development of sufficient analytical or numerical tools using traditional techniques would be either intractable, empirically based and unique to a given scenario, require unique material properties that are not commonly available, or require significant computational effort. Due to the limited amount of empirical data on multiple impact failure, classical reliability methods are not suitable for assessing the probability of containment system perforation. Using existing experimental results of .223 caliber ammunition against AR500 steel panels with 2-inch ballistic rubber, a commonly found protective system in these facilities, the cumulative effects of multiple projectiles were quantified to estimate the number of impacts required to perforate the target material. Impacts were simulated from normal distributions of the x and y coordinates describing the impact point using a cartesian coordinate plane. The impact resistance of the steel was also simulated from a triangular distribution to account for the variability of the experimental results. Monte Carlo Simulation was then used to estimate the expected number of impacts to cause failure at a single point on the target. Using this collective model, it was possible to determine that the distribution of the number of rounds to cause target failure approached a normal distribution. The results indicated that the mean impacts at failure was 11800 with a standard deviation of 800 impacts. Finally, targeting the allowable risk level for structural failure from the JCSS probabilistic model code from the simulated normal distribution, it was determined that the safe number of impacts was approximately 7996. Decision makers can utilize the safe number of impacts to inform training guidance for the future use of facilities and to develop effective inspection requirements. This model can also be adapted to evaluate similar training facilities and to assess how other small caliber projectile impacts would affect live fire shoot house containment systems, providing a useful tool for the design and analysis of future and the assessment of existing facilities for use with ammunition that did not exist during its design.

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Ray, Douglas M., and Christel Kelly. "The US Army Uses Reliability Analytics and Design of Experiments to Test, Evaluate, and Down-Select a Small-Caliber Ammunition ‘Green’ Primer Design for Improved Soldier Safety." In 2018 Annual Reliability and Maintainability Symposium (RAMS). IEEE, 2018. http://dx.doi.org/10.1109/ram.2018.8463067.

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Davis, Brad G., and Jared A. Dequenne. "Constitutive Modeling and Initial Validation of Cellular Concrete Subjected to Large Strains and High Strain Rates." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-23893.

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Abstract The development of lead-free small caliber weapon systems has inadvertently resulted in rounds with more material penetration capabilities. The increased penetration may mean that existing live-fire facilities will no longer be adequate for the training and certification of military and law enforcement personnel. Constraints on training in many live-fire shoot house facilities are already in place, with some allowing only single round impact during training. With no existing constitutive model for the cellular concrete commonly used in these facilities, it is not currently possible to analyze existing facilities or design new facilities against the most recent generation of ammunition currently being fielded. This project utilizes unconfined compression, uniaxial tension, triaxial confinement, and uniaxial strain from the US Army Corps of Engineers Engineer Research and Development Center and Sandia National Laboratory to characterize cellular concrete using a Holmquist-Johnson-Cook Concrete model for use in numerical simulations. This model is then initially validated using data from existing single projectile impact experiments against a similar material, showing results with reasonable accuracy. Additional experiments to fully validate the proposed model are discussed. This model provides the facility owner a potential tool to validate the safety of their facility against new projectiles and provides the designer of new facilities a tool for optimizing future configurations using these materials.

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West, Ashby, Garrett Venable, Michael Flanagan, Evan Harris, Brad G. Davis, F. Todd Davidson, and Joseph Hanus. "Constitutive Modeling and Validation of Sintered Metal Powders Subjected to Large Strains and High Strain Rates." In ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-71461.

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Abstract The development of advanced small caliber weapon systems has resulted in rounds with more material penetration capabilities. The increased capabilities may mean that existing live-fire facilities will no longer be adequate for the training and certification of military and law enforcement personnel, which could result in training constraints and possibly expensive upgrades to improve the safety of existing facilities. New training ammunition manufactured from novel structural materials are needed to allow for the safe, continued use of live-fire shoot house facilities. The goal of this project is to characterize a sintered metal powder and fit a suitable constitutive model for simulation in support of numerical design. A pressed and sintered blend of copper-tin was selected as a suitable representative material for this application. Samples were tested in uniaxial compression under quasi-static conditions and elevated temperatures. Dynamic compression testing at strain rates up to approximately 105 s−1 was conducted using a split-Hopkinson bar. The results of these tests were then used to fit Johnson-Cook and Zerilli-Armstrong strength models to the test data. The models were fit by selecting points from test data at different strain rates and elevated temperatures. This system of equations was then solved for each model while using the same test data to ensure a fair comparison of the results. A Mie-Gruneisen equation of state for the material was estimated using a rule of mixtures and existing shock and particle velocity data. Taylor cylinder tests were conducted and the rate of change in length was measured using high-speed video. Simulation of the Taylor tests was conducted using the developed strength and equation of state model and compared to the experimental results for model validation and comparison. Both the Johnson-Cook and Zerilli-Armstrong models resulted in less than 1% error of the Taylor cylinder results before material fracture. Further development of a fracture model for this material is recommended for use in high strain rate modeling applications.

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Звіти організацій з теми "Small-caliber ammunition"

Bunting, Wade. Elimination of Toxic Heavy Metals From Small Caliber Ammunition. Fort Belvoir, VA: Defense Technical Information Center, January 1998. http://dx.doi.org/10.21236/ada371028.

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South, Joseph, Aristedes Yiournas, and Michael Minnicino. The Effect of Slug Material on the Behavior of Small-Caliber Ammunition. Fort Belvoir, VA: Defense Technical Information Center, September 2006. http://dx.doi.org/10.21236/ada455868.

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Weinacht, Paul, James F. Newill, and Paul J. Conroy. Conceptual Design Approach for Small-Caliber Aeroballistics With Application to 5.56-mm Ammunition. Fort Belvoir, VA: Defense Technical Information Center, September 2005. http://dx.doi.org/10.21236/ada441359.

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Hirlinger, John M., and Gartung Cheng. Investigation of Alternative Energetic Compositions for Small Electro-Explosive Devices for Medium Caliber Ammunition. Fort Belvoir, VA: Defense Technical Information Center, April 2004. http://dx.doi.org/10.21236/ada480817.

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Silvestre, Edgardo B. Performance Oriented Packaging Testing of Wirebound Box for Small Caliber Ammunition Packed in M2A1 Metal Container. Fort Belvoir, VA: Defense Technical Information Center, July 1992. http://dx.doi.org/10.21236/ada254011.

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Silvestre, Edgardo B. Annual Retest of Performance Oriented Packaging (POP) Requirements of Wirebound Box for Small Caliber Ammunition Packed in M19A1 Metal Container. Fort Belvoir, VA: Defense Technical Information Center, November 1993. http://dx.doi.org/10.21236/ada273635.

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Silvestre, Edgardo B. Performance Oriented Packaging Testing of Wirebound Box for Small Caliber Ammunition Packed in PA108 Metal Container for Packing Group II Solid Hazardous Materials. Fort Belvoir, VA: Defense Technical Information Center, July 1992. http://dx.doi.org/10.21236/ada253925.

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