defence research development organisation (26 resultados)

Soft cover. Condición: Very Good. 168 pp., illustrations, diagrams, bibliography, index. "Sonar System Design -- A practical designer's guide offers comprehensive coverage of research on the various aspects of sonar design. It has been carefully structured to cover all areas of sonar design and serve as a guide to the designer. Sonar medium being highly complex and the sonar performance influenced by the medium, it is essential for a designer to understand the sonar medium and its influence on sonar performance. The energy source for sonar is sound and its characteristic and parameters are medium dependent; an understanding of sound propagation in sea medium is essential. The interferences in the sea are severe. For surveillance application and parameter estimation, high processing gain is essential. The spatial, spectral, and temporal characteristics of reverberation and noise are essential for designing processor to have high processing gain. All these aspects are discussed in this book. Sonar equation and its dependence on system, medium and target parameters as well as its limitation are explained to help the designer in basic design evaluation of sonar performance. Important aspects of transducer and sensors arrays to design and select a proper array are covered. Some of the important areas in sonar design are signal design, spatial and temporal processing, parameter estimation, normalisation and data fusion. The main considerations in signal design and signal processing are also covered. It includes optimum estimator, various normalisation schemes and simple linear data fusion techniques. Important applications of underwater acoustic are highlighted. Finally, the book concludes with a typical sonar design and its evaluation method.".

Soft cover. Condición: Very Good. 98 pp., diagrams, bibliography, index. " This monograph presents material devoted to the art of Radar Electronic Counter Counter Measure (ECCM). Modern electronic warfare encounters are very devastating and are terminal in deciding the course of a major conflict. Thanks to the all pervading computer technology and highly developed software support, modelling and simulation are the tools for the present day designers. The book represents the author's attempts in modelling the different aspects of radar ECCM the logic, the process and the controversy involved. It also dwells on the vagaries encountered in estimating and evaluating the efficacy of Radar ECCM solutions against ECM threats, while under different operational scenario.".

Soft cover. Condición: Fine. 110 pp., diagrams, bibliography, index. This monograph is intended to provide an overview of the design and development of thin films and the deposition techniques for various applications. Thin films possess a wide range of applications in both civil as well as military sectors. This includes their use for protection of materials from corrosion, oxidation, a wear, increasing transmission or reflection in a certain wavelength region, and also in filters, separation, fire-resistant coatings, high-temperature superconductors, silicon devices, anti-fog, and memory devices. This book is aimed at creating awareness about the applications of thin films in military and civil sectors, which are classified as scientific, industrial, and consumer. This book may be useful engineers, researchers and young scientists, presenting them the state-of-the-art about thin films and their deposition techniques. This book also provides an overview of the R&D efforts of LASTE the area of thin films.

Soft cover. Condición: Very Good. 228 pp., diagrams, bibliography, index.

Soft cover. Condición: Fine. 226 pp., illustrations, bibliography, index. A lot of literature on the conventional lasers like solid state lasers, gas lasers, and semiconductor lasers is available. However, this monograph is an effort on unconventional lasers. In this monograph, nearly all types of unconventional lasers including x-ray free-electron lasers (XFELs), GaSb-based type-I diode lasers, photonic crystal-based lasers, phase conjugated lasers, quantum cascade lasers (QCLs), and diode pumped fiber lasers, have been covered. All these types of lasers are having many useful applications in various fields like industry, surgery, biology, and novel imaging techniques, apart from their usage in practical research applications in most of the scientific and engineering topics. In the field of medicine, these lasers are applied on several areas, including dermatology, in which they are used to skin tone more even. The phase conjugated lasers are very useful for certain applications like nullifying the optical distortion and also achieving some novel characteristics of the lasers. The fiber laser along with the Raman converter module is capable of the efficient spectral conversion of its unique combined ultra-short radiation pulses into longer-wavelength spectral domain of 1150 to 1550 nm. Tourmaline Ytterbius-1100 has many applications like time-resolved spectroscopy, Raman spectroscopy, micro- and nano-photonics, supercontinuum generation, fluorescence-lifetime imaging microscopy, and optical DNA sensing technology. The unconventional lasers based on photonic crystals are very useful for certain applications like data storage, biomedical applications, and display technologies. GaSb-based type-I diode lasers operating in the optical spectral region ≥ 3µm are very useful for a variety of applications including trace gas sensing, free-space optical communications, and infrared countermeasures. Higher powers from femtosecond fiber lasers have become very useful for a variety of applications including laser processing, medical bio-optics, and opto-electronics The Random lasers have also been drawing the attention of various researchers because of their unique theory, fabrication, and properties. It has important applications in the systems requiring high image quality, e.g., airport security. Raman lasers, spin lasers, and ultrafast mid-IR lasers are also useful in research and other upcoming fields. The amazingly high intensities of XFLEs have led to their great application in the highly specialised areas of scientific research. This monograph provides useful information on these topics, especially from the research point of view. This monograph provides the technical analysis of the theoretical aspects of lasers along with the modeling and designing considerations for maximising the efficiency of these lasers. Along with these some related experimental results available in the literature have been presented to make the presentation clear and meaningful.

Soft cover. Condición: Very Good. 142 pp., illustrations, index. This monograph deals with the design of protective armour and appropriate modules to withstand the impacting objects. The monograph systematically describes an overview of the general principles of armour design, ballistic testing standards for composites, an introduction into ceramic and polymer materials, their processing and design concepts related to their use in developing practical armour systems.

Soft cover. Condición: Very Good. 158 pp., illustrations, bibliography. High Power Laser (HPL) has emerged as one of the very promising technologies that will have major impact on defence and security in the future. Directed Energy Weapons (DEW) using HPL has already converted the 'Ray-Gun' of science fiction into reality. The DEW with its unique features is clearly the new generation weapon that will transform the concepts of defence and deterrence. HPL-DEW technology is very complex, multi-disciplinary an dual-use in nature. This monograph presents a comprehensive overview of this complex subject that combines the best of optics and electronics to offer unprecedented capabilities.

Soft cover. Condición: Fine. 203 pp., illustrations, bibliography, index. Historical narration of technological achievements is more an exception than the rule in India. The narration in respect of rocket development in the country generally follows this trend with a few notable exceptions covering the developments in the Indian Space Programme. The development of defence rockets has hardly been touched upon. Propulsion forms a major subsystem of the space launch vehicles and missiles, and today, India boasts of a significant capability and capacity in this discipline. The solid propellant rocket technology in India is essentially home-grown and has found wide application and adaptation in sounding rockets, launch vehicles, and ballistic missiles. While the requirements of solid propellant rockets for the space programme have reached a maturation phase, the requirements of solid propellant rockets for missile applications are diverse in their characteristics, and performance needs continue on a demand and development trajectory. This book highlights the development of solid propellant rockets and the main solid rocket subsystems used in the space programme and ballistic missiles with emphasis on the indigenous nature of development.

Soft cover. Condición: Very Good. 279 pp., diagrams, bibliography, index. 0.0.

Condición: Like New. Like New. book.

Hardcover. Condición: Good. No Jacket. Former library book; Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less 1.01.

Hardcover. Condición: Very Good. 624 pp., diagrams, bibliography, index. "The subject of Guided Missiles encompasses many disciplines and sciences. This publication is intended to provide an understanding of the different parts and how they interact in making up the whole to anyone working in this area. The publication includes within its covers, a detailed description on various topics, which go to make up the subject. It has been written primarily as a text book for scientists and engineers of DRDO , who come from diverse engineering backgrounds who desire to work in the field of Guided Missiles. The chapters cover widely different subjects like Aerodynamics, Control engineering, Propulsion, Flight Control, Missile Kinematics, Radar, Infrared, Guidance and Warheads starting from basics to a reasonable depth, so that the engineers/scientists can take part in meaningful technical discussions on Guided Missile systems. Though it is written with that prime purpose, it will probably be found useful for other students of Aerospace engineering, as well.".

Hardcover. Condición: Very Good. 470 pp., illustrations, bibliography, index. This monograph covers the basic theories and concepts of digital image processing coupled to variety of algorithms to process, analyse, and interpret imagery. This book elaborates on image enhancement techniques, histogram equalisation and adaptive enhancement, spatial filters, image restoration and adaptive filters, edge and line detection techniques, and image segmentation. Various quality metrics for image processing algorithms are also provided along with hardware implementation of image processing algorithms. It provides detailed technical explanation, mathematical derivations with numerical example for many of the image processing algorithms. The purpose has mainly been to provide scientists, researchers, and students with a first-hand experience of image processing along with good understanding of the theory and algorithms for image processing through simple exercises.

Hardcover. Condición: Fine. Estado de la sobrecubierta: Very Good. 520 pp., illustrations, bibliography, index. This monograph provides a bird's-eye view of the complex technology of Unmanned Aerial Vehicles (UAVs). It is targeted towards a wider audience that includes, beginners who need an introduction to the subject; practicing specialist engineers who need to learn about other disciplines; and programme managers, bureaucrats, planners and policy makers who would like to get a holistic picture of the UAV technology. It provides an approach to the system engineering methodology for the initial sizing of an UAV. A very informative chapter on the lesson learnt provides practicing engineers a glimpse of real life problems. The book discusses several issues relating to the operation of UAVs. An exhaustive compilation of references is provided with every chapter to explore the depth when desired.

Soft cover. Condición: Very Good. 367 pp., bibliography, index. This publication fills a very important niche in the broad spectrum of activities between design/development and release to service of a military fighter aircraft. That niche involves expertise, knowledge, and ability to absorb and implement concepts/nuances of technologies adopted by the designers and certification authorities. The task is complex and demands a good grasp of the subject, considering the fact that a modern fighter aircraft encompasses a multitude of disciplines that have to be integrated into a system that will meet the requirements of safety and operational effectiveness. The role and responsibility of the certification authority are further exacerbated in the concurrent design and certification model adopted in India. The text is the outcome of decades of hands-on experience of the author in the design evaluation of the aircraft and its systems for safety and performance parameters, and in implementing the process of airworhtiness certification of a variety of fighter aircraft, engines, systems, software and hardware. It would be impossible to incorporate, into a publication of this nature, all the details of various aspects involved in airworthiness certification of a fighter aircraft. However, an attempt has been made to bring out the knowledge required in the design of individual disciplines, evaluation techniques to be adopted, and the interactive nature of the work. This text has been structured in such a fashion as to give the casual reader a glimpse of airworthiness certification activities, and to the practitioner, a detailed exposure to this complex subject.

Hardcover. Condición: Very Good. 338 pp., illustrations, bibliography, index. Modern aircrafts operate on high efficiency gas turbine engines. making the turbine engine components such as blades and vanes, which operate at high temperatures under very demanding conditions, is more of an art, restricted only to a few advanced technology companies in the world. Investment Casting process technology forms the backbone of producing such components on an industrial scale. This technology demands expertise in a variety of engineering fields, from superalloy metallurgy and high temperature ceramics to complex tool design and fabrication, surface coatings, testing and quality control, etc. This monograph attempts to provide a comprehensive description of this highly specialised technology developed indigenously in Defence Metallurgical Research Laboratory (DMRL), through the research efforts of numerous scientists over a period of three decades. An exposition of the principles underlying various processes for casting a variety of gas turbine engine parts, with equiaxed, columnar grained, single crystal structure and integral bladed (blisk) castings, is also included for the benefit of interested students and researchers. The monograph also covers some of the innovations that led to the indigenous design and fabrication of major/critical tools and equipments, thus making the technologies developed comprehensive and helping achieve a high level of self-reliance.

paperback. Condición: Very Good. Very Good. Dust Jacket may NOT BE INCLUDED.CDs may be missing. SHIPS FROM MULTIPLE LOCATIONS. book.

hardcover. Condición: Very Good. Very Good. Dust Jacket may NOT BE INCLUDED.CDs may be missing. SHIPS FROM MULTIPLE LOCATIONS. book.

hardcover. Condición: Very Good. Very Good. Dust Jacket may NOT BE INCLUDED.CDs may be missing. SHIPS FROM MULTIPLE LOCATIONS. book.

hardcover. Condición: Very Good. Very Good. Dust Jacket may NOT BE INCLUDED.CDs may be missing. SHIPS FROM MULTIPLE LOCATIONS. book.

Soft cover. Condición: Fine. 232 pp., illustrations, diagrams, bibliography, index. "The monograph presents a perfect blend between the introduction to what really the plastics are, their structure/property relationship, production technologies, quality control & quality assurance and other topics like testing and shelf life. Various chapters covered deal on topics such as varieties of plastics/polymers, structure/property relationships, plastics and their plurality, additives, matrix materials, various manufacturing technologies, testing of plastics and components and aspects of quality control/quality assurance. Important topics like explosive compatibility, shelf life, failure analysis, selection of plastics and latest trends in plastics are also included in details. The monograph is basically aimed at readership for the Armament scientists and technologists, quality control and quality assurance officers and staff, officers and staff ordnance factories. It also will be very useful for ITI students pursuing polymer technology fields and undergraduate course students from academia. It will also be of immense help to design, production and quality control departments of production houses, and testing laboratories.".

Hardcover. Condición: Very Good. Estado de la sobrecubierta: Very Good. 178 pp., diagrams, bibliography, index.

Soft cover. Condición: Fine. 395 pp., illustrations, diagrams, bibliography, index. "This Monograph is a fascinating account of the journey made by Aeronautical Development Establishment (ADE), Bengaluru from its first analog automatic flight control system for an air launched drone (1974) to sophisticated digital Flight Control System (FCS) for the fly-by-wire supersonic fighter (2001) and to the autonomous low-level cruise platform (2013). Distinguishing features of this Monograph include the documentation of 'projects experience , inclusion of technical essays by domain experts and annotation of the contents of important references. A great deal of the technology described is a compilation of the work done by two generations of scientists and engineers at ADE and other co-operating institutions. The authors who have been active participants in these development projects hope that this Monograph would help the future entrants to flight control research and development programmes to adapt themselves to their roles more easily.".

Hardcover. Condición: Fine. 300 pp., illustrations, diagrams, bibliography, index. "Steels for several high-technology applications, such as military hardware and aerospace, need to possess ultrahigh strength (UHS; minimum yield strength of 1380 MPa (200 ksi)) coupled with high fracture toughness in order to meet the requirement of minimum weight while ensuring high reliability. Broadly, there are four classes of UHS steels: (a) low-alloy steels typified by AISI 4340, (b) high-alloy maraging steels typified by 18Ni1700 steel, (c) high-alloy secondary hardening steels typified by AF1410, and (d) carbide-free bainitic steels. Distinctive characteristics of the UHS low-alloy, maraging, secondary hardening and bainitic steels have been presented in the monograph. In such applications, though performance of materials is of prime consideration, cost and availability make low-alloy steels an attractive option. However, the use of low-alloy steels has often been limited by their low fracture toughness. A comprehensive research programme was launched at the Defence Metallurgical Research Laboratory (DMRL) during mid-1980s to develop a cost effective low-alloy alternative to the highly alloyed 18Ni1700 maraging steel. The monograph describes the more than three decades of R&D work that led to the research-based development of a new UHS low-alloy steel, designated DMR-1700, its production and its defence applications. The strength and toughness combination of DMR-1700 steel is better than the best reported values of low-alloy steels AISI 4340, 300M and D6ac, and is comparable to that of 18Ni1700 maraging steel. Given this result, DMR-1700 steel has been successfully demonstrated for (a) one-to-one replacement of maraging steel for missile casings, (b) substantial reduction of weight of the base plate for 120 mm long range mortar and (c) superior ballistic performance for armour applications. To address cost effectiveness of DMR-1700, DMRL pursued ladle refining and vacuum degassing + continuous casting route and found that the steel met the chemistry and properties successfully.".

Soft cover. Condición: Very Good. 246 pp., diagrams, bibliography, index. This monograph describes the basic functioning of Explosive Reactive Armour (ERA) and the fundamentals of explosion dynamics and shock wave which are relevant and necessary to understand the basic mechanism of ERA. The main aim of this monograph is to make available all the important topics of explosion dynamics at one place to save time and effort for new scientists entering armament research and also for those who are already working in this field. This monograph also aims at creating a deep understanding of explosion dynamics among scientists in armament research. To achieve this aim, all relevant fundamentals of explosion dynamics are given with detailed descriptions. Special attention is given to provide detailed derivations of theoretical relations so that the reader gets a clear understanding of the derivations and the assumptions involved in them. All relations have been derived by starting from fundamental laws such as conservation of mass, momentum and energy, and without omitting steps in these derivations.

Hardcover. Condición: Very Good. Estado de la sobrecubierta: Good. 235 pp., bibliography, index. This book is first of its kind which discusses condensed phase chemistry of composite solid propellants in detail-vital for understanding the key phenomena like burning rate modulation, aging, extinction, intermittent and plateau burning, etc. Besides, it describes the subtle role of binders, oxidizers and catalysts. Latest developments in high-energy binders and oxidizers have also been presented. This book is helpful not only in assessing the progress made in composite solid propellants but also in. understanding the key phenomena in an organised fashion. It is hoped that this book will promote excellence in research and teaching in composite solid propellants.