Multidisciplinary Optimization Branch Experience Using Isight Software

Author : National Aeronautics and Space Adm Nasa
Publisher : Independently Published
Page : 34 pages
File Size : 48,5 Mb
Release : 2018-09-25
Category : Science
ISBN : 1724035924

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Multidisciplinary Optimization Branch Experience Using Isight Software by National Aeronautics and Space Adm Nasa Pdf

The Multidisciplinary Optimization (MDO) Branch at NASA Langley is investigating frameworks for supporting multidisciplinary analysis and optimization research. A framework provides software and system services to integrate computational tasks and allows the researcher to concentrate more on the application and less on the programming details. A framework also provides a common working environment and a full range of optimization tools, and so increases the productivity of multidisciplinary research teams. Finally, a framework enables staff members to develop applications for use by disciplinary experts in other organizations. This year, the MDO Branch has gained experience with the iSIGHT framework. This paper describes experiences with four aerospace applications, including: (1) reusable launch vehicle sizing, (2) aerospike nozzle design, (3) low-noise rotorcraft trajectories, and (4) acoustic liner design. Brief overviews of each problem are provided, including the number and type of disciplinary codes and computation time estimates. In addition, the optimization methods, objective functions, design variables, and constraints are described for each problem. For each case, discussions on the advantages and disadvantages of using the iSIGHT framework are provided as well as notes on the ease of use of various advanced features and suggestions for areas of improvement. Padula, S. L. and Korte, J. J. and Dunn, H. J. and Salas, A. O. Langley Research Center NASA/TM-1999-209714, NAS 1.15:209714, L-17914

Author : S. L. Padula
Publisher : Unknown
Page : 22 pages
File Size : 54,5 Mb
Release : 1999
Category : Multidisciplinary design optimization
ISBN : NASA:31769000634686

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Multidisciplinary Optimization Branch Experience Using ISIGHT Software by S. L. Padula Pdf

The Multidisciplinary Optimization (MDO) Branch at NASA Langley is investigating frameworks for supporting multidisciplinary analysis and optimization research. A framework provides software and system services to integrate computational tasks and allows the researcher to concentrate more on the application and less on the programming details. A framework also provides a common working environment and a full range of optimization tools, and so increases the productivity of multidisciplinary research teams. Finally, a framework enables staff members to develop applications for use by disciplinary experts in other organizations. This year, the MDO Branch has gained experience with the iSIGHT framework. This paper describes experiences with four aerospace applications, including (1) reusable launch vehicle sizing, (2) aerospike nozzle design, (3) low-noise rotorcraft trajectories, and (4) acoustic liner design. Brief overviews of each problem are provided, including the number and type of disciplinary codes and computation time estimates. In addition, the optimization methods, objective functions, design variables, and constraints are described for each problem. For each case, discussions on the advantages and disadvantages of using the iSIGHT framework are provided as well as notes on the ease of use of various advanced features and suggestions for areas of improvement.

Author : Anonim
Publisher : Unknown
Page : 182 pages
File Size : 54,9 Mb
Release : 2000
Category : Astronautics
ISBN : NASA:31769000635287

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NASA Langley Scientific and Technical Information Output: 1999 by Anonim Pdf

Author : Yoel Tenne,Chi-Keong Goh
Publisher : Springer Science & Business Media
Page : 736 pages
File Size : 47,7 Mb
Release : 2010-03-10
Category : Technology & Engineering
ISBN : 9783642107016

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Computational Intelligence in Expensive Optimization Problems by Yoel Tenne,Chi-Keong Goh Pdf

In modern science and engineering, laboratory experiments are replaced by high fidelity and computationally expensive simulations. Using such simulations reduces costs and shortens development times but introduces new challenges to design optimization process. Examples of such challenges include limited computational resource for simulation runs, complicated response surface of the simulation inputs-outputs, and etc. Under such difficulties, classical optimization and analysis methods may perform poorly. This motivates the application of computational intelligence methods such as evolutionary algorithms, neural networks and fuzzy logic, which often perform well in such settings. This is the first book to introduce the emerging field of computational intelligence in expensive optimization problems. Topics covered include: dedicated implementations of evolutionary algorithms, neural networks and fuzzy logic. reduction of expensive evaluations (modelling, variable-fidelity, fitness inheritance), frameworks for optimization (model management, complexity control, model selection), parallelization of algorithms (implementation issues on clusters, grids, parallel machines), incorporation of expert systems and human-system interface, single and multiobjective algorithms, data mining and statistical analysis, analysis of real-world cases (such as multidisciplinary design optimization). The edited book provides both theoretical treatments and real-world insights gained by experience, all contributed by leading researchers in the respective fields. As such, it is a comprehensive reference for researchers, practitioners, and advanced-level students interested in both the theory and practice of using computational intelligence for expensive optimization problems.

Author : Jianjun Zhang,Jing Li
Publisher : Springer Nature
Page : 168 pages
File Size : 43,6 Mb
Release : 2021-11-30
Category : Technology & Engineering
ISBN : 9783030898434

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Satellite Photoelectric Sensing Technology by Jianjun Zhang,Jing Li Pdf

This book helps to solve the problems and challenges of satellite sensing in the current environment of increasing communications bandwidths and multiplicity of electromagnetic signals. It presents technology that makes full use of the broadband low-loss advantages of optoelectronic technology and research into new broadband radio-frequency channelization and receiving technology based on photoelectric sensing. The methods presented allow improvements in system performance in terms of receiving bandwidth, frequency-sensing accuracy, channel equalization, adjacent channel crosstalk, dynamic range, and complexity of the system structure. In addressing the difficulty of satellite spectrum control, including the issue of high-precision and real-time wide-spectrum sensing not being able to be obtained simultaneously, the book solves the problem of accurate and parallel-decomposition sensing technology using the dual-phase optical frequency comb. This method avoids the involvement of fine filtering and does not require fine alignment between the source and the filter but achieves high perceptual accuracy. Satellite Photoelectric Sensing Technology explores the research background, significance, and current challenges associated with the technology, making it relevant and interesting to academics, practitioners, and postgraduate students in this field.

Author : Jianjun Zhang,Jing Li
Publisher : Elsevier
Page : 208 pages
File Size : 52,5 Mb
Release : 2023-08-25
Category : Technology & Engineering
ISBN : 9780443132827

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High-Reliability Autonomous Management Systems for Spacecraft by Jianjun Zhang,Jing Li Pdf

High-Reliability Autonomous Management Systems for Spacecraft updates on research on three levels of self-management, including: 1) Autonomous health management of spacecraft that covers how spacecraft can monitor their own state and autonomously detect, isolate and recover from faults; 2) Autonomous mission management of spacecraft where the spacecraft can directly receive the mission, formulate a reasonable plan according to the current state and working environment of the spacecraft, and convert the mission into a specific sequence of instructions; 3) Spacecraft autonomous data management where the spacecraft processes a large amount of raw data and extracts useful information, and autonomously executes or changes flights. The autonomous management of spacecraft uses modern control technologies such as artificial intelligence to establish a remote intelligent body on the spacecraft so that the spacecraft can complete its flight tasks by itself. Its goal is to accurately perceive its own state and external environment without relying on external information injection and control or rely on external control as little as possible. Divides the autonomous management level of spacecraft into two levels, autonomy and execution Covers the implementation of spacecraft autonomous management into three aspects, including autonomous health management of the spacecraft, mission management, and converting the mission into a specific sequence of instructions Discusses how these processes can take a large amount of raw data and extract useful information Covers the autonomous management model of the spacecraft, including compatibility

Author : Tetsuo Okada,Katsuyuki Suzuki,Yasumi Kawamura
Publisher : Springer Nature
Page : 767 pages
File Size : 50,9 Mb
Release : 2020-10-03
Category : Technology & Engineering
ISBN : 9789811546808

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Practical Design of Ships and Other Floating Structures by Tetsuo Okada,Katsuyuki Suzuki,Yasumi Kawamura Pdf

This book gathers the peer-reviewed proceedings of the 14th International Symposium, PRADS 2019, held in Yokohama, Japan, in September 2019. It brings together naval architects, engineers, academic researchers and professionals who are involved in ships and other floating structures to share the latest research advances in the field. The contents cover a broad range of topics, including design synthesis for ships and floating systems, production, hydrodynamics, and structures and materials. Reflecting the latest advances, the book will be of interest to researchers and practitioners alike.

Author : Sankaran Mahadevan
Publisher : Unknown
Page : 108 pages
File Size : 44,5 Mb
Release : 2003
Category : Reliability (Engineering)
ISBN : NASA:31769000715600

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System Risk Assessment and Allocation in Conceptual Design by Sankaran Mahadevan Pdf

Author : Anonim
Publisher : Unknown
Page : 806 pages
File Size : 42,7 Mb
Release : 2001
Category : Aerodynamics
ISBN : PSU:000045716775

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A Collection of Technical Papers by Anonim Pdf

Author : Achille Messac
Publisher : Cambridge University Press
Page : 503 pages
File Size : 50,5 Mb
Release : 2015-03-19
Category : Computers
ISBN : 9781107109186

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Optimization in Practice with MATLAB by Achille Messac Pdf

This textbook is designed for students and industry practitioners for a first course in optimization integrating MATLAB® software.

Author : Natalia M. Alexandrov
Publisher : Unknown
Page : 36 pages
File Size : 48,7 Mb
Release : 2000
Category : Algorithms
ISBN : NASA:31769000638539

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Analytical and Computational Aspects of Collaborative Optimization by Natalia M. Alexandrov Pdf

Author : Jasbir Singh Arora
Publisher : Academic Press
Page : 897 pages
File Size : 45,9 Mb
Release : 2011-08-12
Category : Technology & Engineering
ISBN : 9780123813763

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Introduction to Optimum Design by Jasbir Singh Arora Pdf

Introduction to Optimum Design, Third Edition describes an organized approach to engineering design optimization in a rigorous yet simplified manner. It illustrates various concepts and procedures with simple examples and demonstrates their applicability to engineering design problems. Formulation of a design problem as an optimization problem is emphasized and illustrated throughout the text. Excel and MATLAB® are featured as learning and teaching aids. Basic concepts of optimality conditions and numerical methods are described with simple and practical examples, making the material highly teachable and learnable Includes applications of optimization methods for structural, mechanical, aerospace, and industrial engineering problems Introduction to MATLAB Optimization Toolbox Practical design examples introduce students to the use of optimization methods early in the book New example problems throughout the text are enhanced with detailed illustrations Optimum design with Excel Solver has been expanded into a full chapter New chapter on several advanced optimum design topics serves the needs of instructors who teach more advanced courses

Author : Josip Stjepandić,Nel Wognum,Wim J.C. Verhagen
Publisher : Springer
Page : 836 pages
File Size : 40,7 Mb
Release : 2015-01-30
Category : Technology & Engineering
ISBN : 9783319137766

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Concurrent Engineering in the 21st Century by Josip Stjepandić,Nel Wognum,Wim J.C. Verhagen Pdf

Presenting the gradual evolution of the concept of Concurrent Engineering (CE), and the technical, social methods and tools that have been developed, including the many theoretical and practical challenges that still exist, this book serves to summarize the achievements and current challenges of CE and will give readers a comprehensive picture of CE as researched and practiced in different regions of the world. Featuring in-depth analysis of complex real-life applications and experiences, this book demonstrates that Concurrent Engineering is used widely in many industries and that the same basic engineering principles can also be applied to new, emerging fields like sustainable mobility. Designed to serve as a valuable reference to industry experts, managers, students, researchers, and software developers, this book is intended to serve as both an introduction to development and as an analysis of the novel approaches and techniques of CE, as well as being a compact reference for more experienced readers.

Author : Urmila Diwekar
Publisher : Springer Science & Business Media
Page : 342 pages
File Size : 53,7 Mb
Release : 2013-03-09
Category : Mathematics
ISBN : 9781475737455

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Introduction to Applied Optimization by Urmila Diwekar Pdf

This text presents a multi-disciplined view of optimization, providing students and researchers with a thorough examination of algorithms, methods, and tools from diverse areas of optimization without introducing excessive theoretical detail. This second edition includes additional topics, including global optimization and a real-world case study using important concepts from each chapter. Introduction to Applied Optimization is intended for advanced undergraduate and graduate students and will benefit scientists from diverse areas, including engineers.

Author : Ashok D. Belegundu,Tirupathi R. Chandrupatla
Publisher : Cambridge University Press
Page : 481 pages
File Size : 49,6 Mb
Release : 2011-03-28
Category : Computers
ISBN : 9780521878463

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Optimization Concepts and Applications in Engineering by Ashok D. Belegundu,Tirupathi R. Chandrupatla Pdf

In this revised and enhanced second edition of Optimization Concepts and Applications in Engineering, the already robust pedagogy has been enhanced with more detailed explanations, an increased number of solved examples and end-of-chapter problems. The source codes are now available free on multiple platforms. It is vitally important to meet or exceed previous quality and reliability standards while at the same time reducing resource consumption. This textbook addresses this critical imperative integrating theory, modeling, the development of numerical methods, and problem solving, thus preparing the student to apply optimization to real-world problems. This text covers a broad variety of optimization problems using: unconstrained, constrained, gradient, and non-gradient techniques; duality concepts; multiobjective optimization; linear, integer, geometric, and dynamic programming with applications; and finite element-based optimization. It is ideal for advanced undergraduate or graduate courses and for practising engineers in all engineering disciplines, as well as in applied mathematics.