Projectile Balloting Attributable to Gun Tube Curvature
TLDR
In this paper, a deterministic barrel model that possesses both vertical and lateral deviations from centerline in accordance with measurement data is presented, followed by a novel approach to simulating comprehensive barrel centerline variations for the investigation of projectile balloting 1 motions.Abstract:
Transverse motion of a projectile during launch is detrimental to firing accuracy, structural integrity, and/or on-board electronics performance of the projectile. One manifest contributing factor to the undesired motion is imperfect bore centerline straightness. This paper starts with the presentation of a deterministic barrel model that possesses both vertical and lateral deviations from centerline in accordance with measurement data, followed by a novel approach to simulating comprehensive barrel centerline variations for the investigation of projectile balloting 1 motions. A modern projectile was adopted for this study. In-bore projectile responses at various locations of the projectile while traveling through the simulated gun tubes were obtained. The balloting was evaluated in both time and frequency domains. Some statistical quantities and the significance were outlined.read more
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References
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Proceedings ArticleDOI
The Effect of Sabot Front Borerider Stiffness on the Launch Dynamics of Fin-Stabilized Kinetic Energy Ammunition
TL;DR: In this article, the influence of sabot front borerider stiffness on the launch dynamics of generic 25mm fin-stabilized kinetic energy ammunition has been experimentally examined and the effects of this parameter on the jump and dispersion of the ammunition are presented and analyzed.
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A methodology for characterizing gun barrel flexure due to vehicle motion
TL;DR: In this paper, a method to quantify the effects of barrel flexure on the accuracy of a tank-mounted gun was proposed. But the method was limited to a single vehicle and it was not applicable to a large number of vehicles.
Journal ArticleDOI
Balloting motion of SLEKE launch packages in EM railguns
TL;DR: In this article, the authors reported some balloting motion computational results of the SLEKE (sabot launched electric-gun kinetic energy) launch packages, which are in their early stage of development.
ReportDOI
Methodology for Determining Optimal Tank Cannon Barrel Centerline Shape
TL;DR: In this paper, the authors describe the methodology for determining optimal centerline shape of a gun tube and show that the shape that imparts the smallest transverse disturbance has the best accuracy performance.
Use of the SIMBAD Gun Dynamics Code for Modelling the In-Bore Dynamics of EM Launchers
D. W. Lodge,A. M. Dilkes +1 more
TL;DR: In this article, a generic SIMBAD model of various Electro-Magnetic (EM) launchers has been used in the UK for studying model the in-bore phase and launch accuracy issues of such systems.