Download or read book Yawing and Balloting Motion of a Projectile in the Bore of a Gun with Application to Gun Tube Damage written by Evan Harris Walker and published by . This book was released on 1974 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: New basis equations of motion are derived to describe in bore shell yawing and balloting motion. It is shown that the prior equations of Reno and Thomas are not satisfactory. These equations are used to derive expressions for the growth of balloting motion. Application of these equations to a mechanical failure of a shell in an 8-in. howitzer XM201 test program shows the new treatment accounts for the observed tube damage. This approach provides a basis for calculating causes and probability of occurrences of severe balloting.

Download or read book Ballistics written by and published by . This book was released on 1976 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1978-07 with total page 1352 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transverse Motion of 8 Inch Projectile XM673 in the XM201 M2A2 Gun Tube Mk 16 and MCLG Gun written by Szu Hsiung Chu and published by . This book was released on 1973 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dynamic behavior of a projectile during acceleration in the gun tube requires a quantitative description, since, if balloting becomes excessive, undesirable conditions such as damage to fuzing, shell body engraving, inaccuracy of fire due to yaw, and yaw velocity at the muzzle may result. The approach taken in this report utilizes the equations of motion derived in an earlier report titled, 'Transverse Motion of an Accelerating Shell' to describe the balloting motion of the 8-inch XM673 projectile fired in the MK-16, MCLG gun, XM201 and M2A2 gun tubes. Most previous solutions which have appeared in published works to date discuss the problem in a simple way, or consider separately the main factors that effect projectile motion. Effects of friction forces at the bourrelet and the driving band, changes of the eccentricity and the location of the center of gravity, and the wall thickness of the shell were considered in this formulation. The analysis shows that the contact of the bourrelet on the gun tube is intermittent when the C.G. eccentricity is zero or very small and the contact is continuous when the eccentricity is large and that this parameter is the one that most affects the performance of the projectile and the associated fuze. The analytical results are presented in graphic form.

Download or read book Notices of Changes in Classification Distribution and Availability written by and published by . This book was released on 1978 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Approximate Analysis of Balloting Motion of Railgun Projectiles written by and published by . This book was released on 1991 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the final of three reports dealing with the in-bore balloting motion of a projectile fired from an electromagnetic railgun. Knowledge of projectile in-bore motion is important to its design and the design of the railgun. It is a complicated problem since many parameters are involved and it is not easy to determine the interacting relationships between them. To make the problem easier to understand it was analyzed on several levels. Beginning from the basic simple model which computed only the axial motion, more complicated models were introduced in upper levels that included the more significant lateral forces and gun tube vibration effects. This report deals with the approximate analysis of balloting motion. This model considers the effects of the propulsion force, the friction force of the projectile package (projectile and armature), air resistance, gravity, the elastic forces, and the projectile/ barrel clearance. To simplify the modeling, a plane motion configuration is assumed. Though the projectile is moving with a varying yaw angle, the axes of the barrel and the projectile package, and the projectile center of gravity are always considered in a plane containing the centerlines of the rails. Equations of motion are derived and solved. A sample computation is performed and the results plotted to give a clearer understanding of projectile in-bore motion.

Download or read book Text Book on the Theory of the Motion of Projectiles the History Manufacture and Explosive Force of Gunpowder the History of Small Arms the Method of Conducting Experiments and on Ranges written by Great Britain. War Office and published by . This book was released on 1863 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index written by and published by . This book was released on 1978 with total page 1064 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Shooting Incident Reconstruction written by Lucien C. Haag and published by Academic Press. This book was released on 2006-01-03 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shooting Incident Reconstruction is based on the authors' numerous years of conducting courses and seminars on the subject of shooting incident reconstruction. It seeks to thoroughly address matters from simple to complex in order to provide the reader with an explanation of the factors surrounding ballistics, trajectory, and shooting scenes. The ultimate objectives of this unique book are to assist investigators, crime scene analysts, pathologists, ballistics experts, and lawyers to understand the terminology, science, and factors involved in reconstructing shooting incident events to solve forensic cases. The book covers a full range of related topics, including the range from which a firearm was discharged; the sequence of shots in a multiple discharge shooting incident; the position of a firearm at the moment of discharge; the position of a victim at the moment of impact; the probable flight path of a projectile; the manner by which a firearm was discharged, and much more. It contains over 100 diagrams and photographs, many in full-color, that support and illustrate key concepts. - Written by one of the most well-respected shooting scene and ballistics experts in the world - Contains over 100 diagrams and photographs, many in full-color, that support and illustrate key concepts - Case studies illustrate real-world application of technical concepts

Download or read book Basic Simple Modeling of Balloting Motion of Railgun Projectiles written by and published by . This book was released on 1991 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the second of three basic reports dealing with the in-bore balloting motion of a projectile launched in an electromagnetic railgun. The first report addressed axial projectile motion without cocking and was titled 'A Basic Single Model of In-bore Motion of Railgun Projectiles.' Understanding the inbore motion of a projectile is important to its design and its ability to hit a target with some effectiveness. Analysis of in-bore motion is a complicated problem since many parameters are involved and the interacting relationships between them must be determined. To make the problem easier to understand, it was analyzed on several levels beginning with the basic simple model which computed only the axial motion and followed by more complicated models in the upper analysis levels that included as many lateral forces and gun tube vibration effects as possible. This report deals with the second basic or zero level of balloting analysis. A basic simple model considering only the effect of the propulsion force, the friction force of the armature, and the clearance between the projectile and the barrel is presented. The computation of the axial projectile motion with a certain cocking angle is the goal of this analysis. Equations of motion are derived and solved. A sample computation with available data is performed and the results plotted to give a clearer understanding of balloting action.

Download or read book A Plan for increasing the efficiency of cannon by giving the rifle motion to cannon projectiles written by William E. WOODBRIDGE and published by . This book was released on 1852 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Account of Experiments Made to Determine the Velocities of Rifle Bullets Commonly Used written by Samuel Haughton and published by . This book was released on 1862 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Forces of Constraint on a Projectile in a Rifled Gun Bore written by and published by . This book was released on 1988 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: The general equations of the six-degree of freedom problem of the lateral (constraint) forces on a projectile traveling in a gun bore are indicated. In general, the bore is not straight, the projectile is imbalanced, and the principal axis of inertia of the projectile is not aligned with the spin axis. Complete equations are derived for two special cases where the rifling is of constant pitch: the first case being that of an imbalanced and misaligned projectile traveling in a perfectly straight bore, and the second case being that of a perfectly balanced and aligned projectile traveling in a crooked bore. Keywords: Spiral wear, Muzzle wear, Secondary wear, Projectile dynamics, Gun dynamics, Balloting, Rifled gun tubes, Tube curvature, Lateral forces on projectiles, Constraint forces on projectiles, Projectile balance, Projectile alignment.

Download or read book A mathematical treatise on the motion of projectiles written by Francis Bashforth and published by . This book was released on 1873 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experimental Plating of Gun Bores to Retard Erosion written by Vernon A. Lamb and published by . This book was released on 1960 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Mathematical Treatise on the Motion of Projectiles Founded Chiefly on the Results of Experiments Made with the Author s Chronograph written by Francis Bashforth and published by . This book was released on 1850 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Mathematical Treatise on the Motion of Projectiles Founded Chiefly on the Results of Experiments Made with the Authors Chronograph written by Francis Bashforth and published by . This book was released on 1873 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: