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- Academic Journals (21)
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From:Progress In Electromagnetics Research (Vol. 137) Peer-ReviewedIt is potentially useful to perform target identification using micro-Doppler features because they contain information on the geometrical structure of the target. In this paper, the m-D effect of the rotationally...
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From:Science (Vol. 308, Issue 5721) Peer-ReviewedLong before guns gave European explorers a decisive advantage over indigenous peoples, our ancestors had their own technological innovation that allowed them to dominate the Stone Age competition: the projectile point,...
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From:International Journal of Aerospace Engineering (Vol. 2018) Peer-ReviewedThe article establishes a seven-degree-of-freedom projectile trajectory model for a new type of spinning projectile. Based on this model, a numerical analysis is performed on the ballistic characteristics of the...
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From:Forensic Science International (Vol. 158, Issue 1) Peer-ReviewedAbstract A study was conducted to examine the potential of the considerable variability of the lead isotope compositions in bullets (projectiles) and primers in shooting incident investigations. Multiple-collector...
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From:Forensic Science International (Vol. 158, Issue 2-3) Peer-ReviewedAbstract The authors evaluate the consequences of incomplete necroscopic examinations wherein it was impossible to apply radiological resources to locate firearm projectiles. The study includes 8185 reports from the...
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From:Canadian Journal of Physics (Vol. 89, Issue 12) Peer-ReviewedWe study the motion of a projectile with linear drag shot from a nonzero height on an inclined plane that makes an angle [PHI] with the horizontal, and obtain analytical expressions for the range, the time of flight,...
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From:Mathematical Problems in EngineeringPeer-ReviewedA study on the dynamic response of a projectile penetrating concrete is conducted. The evolutional process of projectile mass loss and the effect of mass loss on penetration resistance are investigated using theoretical...
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From:International Journal of Aerospace Engineering (Vol. 2017) Peer-ReviewedThis research describes a computational study undertaken to determine the effect of a flow control mechanism and its associated aerodynamics for a finned projectile. The flow control system consists of small microflaps...
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From:Journal of the Alabama Academy of Science (Vol. 72, Issue 2) Peer-ReviewedIS A HOLE THROUGH THE CENTER OF THE EARTH A BOTTOMLESS PIT? Gene Omasta, Professor Emeritus, Troy State University, Troy, AL 36082. The motion of an object dropped through a hole passing through the center of the...
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From:Antiquity (Vol. 91, Issue 359) Peer-ReviewedThe European colonisation of South America had different effects on the indigenous peoples, particularly on mobile hunter-gatherer societies such as those that inhabited mainland southern continental Patagonia and the...
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From:Canadian Journal of Physics (Vol. 89, Issue 10) Peer-ReviewedIn this study, the formulas for projectile velocity components and coordinates in a vacuum were derived with the altitude decrease in gravitational acceleration factored in. A model of cannon shell motion in the air is...
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From:Technology and Engineering Teacher (Vol. 71, Issue 2) Peer-ReviewedBackground The use of projectiles is a concept familiar to most students, whether it is a classic slingshot, bow and arrow, or even a spit wad through a straw. Perhaps the last thing a teacher wants is more...
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From:Mathematical Problems in EngineeringPeer-ReviewedDue to the large launch overload and high spin rate of spin-stabilized projectile, no attitude sensor is adopted in square crossing fixed-cant canard concept, which causes the lack of existing projectile linear theory...
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From:International Journal of Evolutionary BiologyPeer-ReviewedDespite a body of literature focusing on the functionality of modern and stylistically distinct projectile points, comparatively little attention has been paid to quantifying the functionality of the early stages of...
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From:Plastics Engineering (Vol. 63, Issue 7) Peer-ReviewedU.S. Patent 7,207,274 (April 24, 2007), "Sticky Polymer Lethal Agent Tracer," Tara Y. Plew and Leslie D. Kramer (Lockheed Martin Corp., Bethesda, Maryland, USA). It is difficult to detect explosives or drugs in...
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From:Advances in Mechanical EngineeringPeer-ReviewedAny trajectory calculation method has three primary sources of errors, which are model error, parameter error, and initial state error. In this paper, based on initial projectile flight trajectory data measured using...
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From:Canadian Journal of Physics (Vol. 91, Issue 9) Peer-ReviewedA computer program to calculate the amplitude for general state-to-state transitions in hydrogen from the analytical result has the potential for significant numerical round-off errors whenever the sum of the angular...
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From:Advances in Mechanical EngineeringPeer-ReviewedBased on the dynamic spherical cavity expansion theory of concrete and the analysis of experimental data, a mass abrasion model of projectile considering the hardness of aggregates, the relative strength of target and...
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From:Mechanika (Vol. 19, Issue 5) Peer-ReviewedThe article discusses issues related to the process of piercing the material at high speed of ballistic impact. The analysis assumes the dynamic degenerate model that takes into account the dry friction. On the basis of...
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From:Mechanika (Vol. 2, Issue 82) Peer-ReviewedAt the present research, a new analytical model is developed for the impact of a deformable blunt projectile to metallic targets using the plastic stress wave propagation theory and the momentum equations. At this...