Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"gun barrel"”.
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Numerical Analysis of Gun Barrel Pressure Blast Using Dynamic Mesh Adaption
… blast of the projectile which is launched from a barrel and to investigate the pressure distribution and sound pressure level (dB) along different positions away from the gun axis and towards the fuselage of the aircraft. Fluent was employed to simulate the unsteady flow using dynamic mesh with …
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Surface Strain Measurement for Non-Intrusive Internal Pressure Evaluation of a Cannon
… has recently developed cutting edge designs for gun barrels, projectiles, and propellants that require testing. This includes measuring the internal pressure during fire. There are concerns with the current method of drilling to mount pressure transducers near the breech and chamber of the gun …
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Vibration of a cantilever beam that slides axially in a rigid frictionless hole
… of an interest in the transient behavior of a gun barrel during recoil following firing. This research considers a cantilever beam which can move axially in and out of a rigid frictionless hole and is free to vibrate laterally outside the hole. Two Euler equations describing the lateral and …
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Computational interior ballistics modeling
Interior ballistics are the events in a gun system that determines the performance of any gun design. In order to efficiently design any gun system the internal ballistics should be understood to minimize energy losses and correctly define design parameters. The goal of this computational model is …
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Statistical methods for bullet matching
… determine whether they were fired from the same gun barrel has come under fairly intense scrutiny in recent years. This began in earnest in 2009 with a National Academy of Sciences report questioning the scientific validity of these methods. Further criticisms were made in a 2016 report by the …
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Numerical modeling of unsteady compressible gas flow around a projectile
… during the motion of the projectile in the gun barrel is undertaken. The flow is considered axisymmetrical, nonstationary, nonisothermal, compressible, and turbulent. For calculating the compressible gas flow around a projectile, the finite volume method was employed. An h-adaptive mesh …
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Design, testing, and utilization of a spherical shock-recovery system to investigate material response to ultrahigh pressure
… was placed inside a short section of naval gun barrel. The remaining volume of the barrel was filled with sand to aid confinement. Several shock-recovery experiments were performed with the spherical system. Five experiments were performed with samples containing mixtures of nanograde nickel …
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Novel micron- and nano-scale energetic materials for advanced gun propulsion, their material properties, and their effects on ballistic performance
… into a composite material were evaluated as a gun propellant for application in a future weapon system for the US Army. Some of these materials may find dual use in civilian applications. Applications in small and medium arms, artillery, tank, aircraft, and shipboard gun systems will all …