Base Bleed

Base Bleed

Author: Kenneth K. Kuo

Publisher: Taylor & Francis

Published: 1991

Total Pages: 336

ISBN-13: 9780891169376

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Includes papers presented at a symposium, which represent the state-of-the-art in the development of base bleed projectiles and related research, and are from recognized experts in the field. The papers have undergone a thorough review process.


The Effect of Base Bleed on the Drag and Magnus Characteristics of a Rotating Body of Revolution

The Effect of Base Bleed on the Drag and Magnus Characteristics of a Rotating Body of Revolution

Author: Frank J. Regan

Publisher:

Published: 1972

Total Pages: 126

ISBN-13:

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Base bleed is a technique whereby all or part of the boundary layer is 'bled' from the rear portion of a projectile to the base region. Passage from the model's surface to the base region is by means of concentric cylindrical passageways. The purpose of base bleed is to reduce the Magnus moment on overlong spinning bodies of revolution and to reduce the base drag. Both analytic and experimental results are presented. The boundary layer is represented by means of the momentum thickness.


Flow in the Base Region of Axisymmetric and Two-dimensional Configurations

Flow in the Base Region of Axisymmetric and Two-dimensional Configurations

Author: Milton A. Beheim

Publisher:

Published: 1961

Total Pages: 44

ISBN-13:

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A theoretical and experimental investigation has been conducted of the pressure distribution on the surface of either a circular cylinder or a truncated cone located within the base region of another circular cylinder at Mach number 2. A similar analysis of pressure distribution was made for rearward-facing two-dimensional steps, and theoretical results were compared with experimental results of earlier investigations. Theoretical base-pressure ratios of two-dimensional steps agreed well with experimental results; however, as a result of the simplifying assumptions made for axisymmetric configurations, only a range of values for theoretical base-pressure ratio could be calculated within which the experimental results were expected to occur. The data generally followed the trends predicted by the theory, and deviations apparently could be explained.


International Conference on Applications and Techniques in Cyber Intelligence ATCI 2019

International Conference on Applications and Techniques in Cyber Intelligence ATCI 2019

Author: Jemal H. Abawajy

Publisher: Springer

Published: 2019-07-31

Total Pages: 2164

ISBN-13: 3030251284

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This book presents innovative ideas, cutting-edge findings, and novel techniques, methods, and applications in a broad range of cybersecurity and cyberthreat intelligence areas. As our society becomes smarter, there is a corresponding need to be able to secure our cyberfuture. The approaches and findings described in this book are of interest to businesses and governments seeking to secure our data and underpin infrastructures, as well as to individual users.


Advanced Measurement and Test III

Advanced Measurement and Test III

Author: Andy Wu

Publisher: Trans Tech Publications Ltd

Published: 2013-07-31

Total Pages: 2589

ISBN-13: 3038260975

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Selected, peer reviewed papers from the 2013 3rd International Conference on Advanced Measurement and Test (AMT 2013), March 13-14, 2013, Xiamen, China


Ballistics

Ballistics

Author: Beat P. Kneubuehl

Publisher: Springer Nature

Published: 2024

Total Pages: 451

ISBN-13: 3662692376

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This work provides comprehensive, practice-oriented coverage of ballistics. It explains the principles and calculation methods for the main four areas of ballistics, regardless of calibre, drawing on numerous facts, observations and examples from the authors decades of experience. Interior ballistics: The characteristics of explosive materials (detonating agents and propellants), methods for calculating gas pressure and the velocity of projectiles and rockets during the acceleration phase, alternative systems for accelerating projectiles and the acceleration of fragments. Intermediate ballistics: The dynamics of the moment at which the projectile leaves the muzzle and propellant gas is ejected from the barrel, effects on the person or structure supporting the weapon and approaches to resolving questions regarding shots from close range in criminology and forensic medicine. Exterior ballistics: The forces acting on a projectile and methods for calculating them, models for calculating trajectories (including the ballistic coefficient), gyroscopic projectile stabilization theory and aerodynamic optimization of projectiles. Terminal ballistics: Empirically-derived facts and data. The principles of ballistic protection design, ballistic testing problems and possible solutions and a comprehensive discussion of ricochets a matter of considerable importance in forensics. The book is intended for ballisticians, military personnel, police officers, criminologists, shooting range specialists, sport shooters, hunters and anyone else with an interest in ballistics. Beat P. Kneubuehl holds a PhD in forensic science and a masters degree in mathematics. For 33 years he was head of the Ballistic Science Unit at the Ballistics, Weapons and Ammunition Test Centre of the Swiss Ministry of Defence. He developed key ballistics software and frequently played a leading role in range tests involving every calibre of munition. He devoted himself to the problems of ballistic protection and the effects of projectiles under the auspices of the European Committee for Standardization and of NATO. After completing a doctorate in forensic science, he added forensic ballistics to his field of activity. His earlier publications include the standard work Wound Ballistics: Basics and Applications (also published by Springer-Verlag).