Download or read book The Effects of Structural Elasticity on Aircraft Control Systems written by Vincent William Howard and published by . This book was released on 1956 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Structural Elasticity on Aircraft Control Systems written by Vincent William Howard and published by . This book was released on 1956 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Influence of Structural Elasticity on the Stability of Airplanes and Multi stages Missiles written by Luther T. Prince and published by . This book was released on 1961 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: This provides root locus method for examining the influence of structural coupling on the stability of uncontrolled airplanes. The graphical technique permits a rapid but accurate quantitative evaluation of the effects of changes in aeroelastic and aerodynamic characteristics on airplane stability. Specific examples will illustrate the utility of the method. Problems involved in integrating a flexible vehicle into an automatic flight control system are also discussed. The similarity of the problem as it exists in manned airplanes and multi-stage missiles is presented. Examples are shown which illustrate the conventional (linear control) design approach to this problem. A promsing new approach utilizing adaptive (non-linear control) techniques is also presented. (Author).
Download or read book Flight Stability and Automatic Control written by Robert C. Nelson and published by WCB/McGraw-Hill. This book was released on 1998 with total page 441 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of Flight Stability and Automatic Control presents an organized introduction to the useful and relevant topics necessary for a flight stability and controls course. Not only is this text presented at the appropriate mathematical level, it also features standard terminology and nomenclature, along with expanded coverage of classical control theory, autopilot designs, and modern control theory. Through the use of extensive examples, problems, and historical notes, author Robert Nelson develops a concise and vital text for aircraft flight stability and control or flight dynamics courses.
Download or read book NASA Technical Note written by and published by . This book was released on 1967 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Third World Conference on Structural Control written by Fabio Casciati and published by John Wiley & Sons. This book was released on 2003-03-14 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organized by the International Association for Structural Control(IASC), and sponsored by the European Association for the Controlof Structures (EACS), the recent world conference on structuralcontrol (3WCSC) brought together engineers, scientists, architects,builders and other practitioners interested in the general fieldsof active, hybrid and passive vibration control, health monitoringand damage detection, intelligent/smart materials and systems.Applications included buildings, bridges, space structures andcivil infrastructures under the action of dynamic environments(earthquake, wind, traffic...) and man-made loads. It provideda valuable forum for the discussion of the most pressing concernsin structural control and its related topics. The conference covered a wide range of topics including activeand semi-active control devices, passive control devices, controlalgorithms for linear and non-linear systems, modeling andidentification of structural systems, sensors, health monitoringand damage detection, benchmark test of building and bridges,innovative materials for structural control, applications toaerospace structures, applications to bridges, applications tocritical structures, external dynamic force characteristics andcontrollability issues, implications of severe ground motions, windforces, codes for structural control, and so forth. Suchcomprehensive treatment of the most innovative developments instructural control will make these volumes an informative referencefor all researchers and engineers interested in this area. Proceedings of the US - Europe Workshop On Sensors andSmart Structures Technology Como and Somma Lombardo, Italy In the last few years, significant progress has been made in thearea of sensing technology and structural healthmonitoring/condition assessment in the US and Europe. Innovativeconcepts involving new hardware, algorithms, and software have beenproposed. There have also been several full-scale trialimplementations of densely sensor-instrumented infrastructures andhealth monitoring systems, as well as case studies on bridges inEurope and in the US. Much can be learnt through US/European collaboration in the areaof experimental verification on small, medium, large and full-scaleprojects. Moreover, a common framework for expanded future jointresearch can be developed on the increased understanding achievedthrough mutual learning. This workshop consisted of seminar sessions on several themeswhich included innovative sensing hardware, advances in wirelesstechnology, and damage detection/characterization and conditionassessment methodologies. In addition, there were several workshopsessions devoted to summarizing the status of the sensors and smartstructures technologies in these topics, identifying the compellingresearch issues, and formulating an action plan withrecommendations for development and implementation through possiblecollaborative research projects and sharing of scientific data.
Download or read book Active Aeroelastic Aircraft and Its Impact on Structure and Flight Control Systems Design written by Johannes Schweiger and published by . This book was released on 2000 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Active aeroelastic concepts have been proposed for several years now. Their common incentive are improvements of aircraft performance and stability by the intentional use of aeroelastic effects. This means that the basic flexibility characteristics of a new aircraft project must be included in the early conceptual design process, and the structural and flight control system design must be coupled very closely. The knowledge about the magnitude of aeroelastic impacts on aerodynamic forces and aircraft stability is still very limited within the community of people involved in aeronautical engineering - even among the specialists in aeroelasticity. For a successful application of active aeroelastic concepts, their proper identification is therefore the first step. It will be shown for some selected examples, which static aeroelastic effects are usually very important for conventional designs, and how they can be made even more effective in a positive sense for future designs. The accuracy and proper use of aeroelastic prediction methods and analysis models is addressed briefly in the context of interactions with other disciplines, and ideas are developed for the multi-disciplinary design process of active aeroelastic aircraft concepts. Whereas static aeroelastic effects usually only become important with increasing airspeed, a concept will be demonstrated for aeroelastic improvements, which also works at low speeds.
Download or read book Technical Note National Advisory Committee for Aeronautics written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1958 with total page 1216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Topics on Flexible Airplane Dynamics The application of flexible airframe transfer function approximations and the sensitivity of airframe transfer functions to elastic mode shapes written by and published by . This book was released on 1963 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: pt.3: The dynamic coupling of rigid and elastic degrees of freedom of an airplane are described by two methods. In the first, coupling is described by the changes in airframe characteristic equation roots caused by the introduction of coupling terms to the equations of motion. The second method employs modal response coefficients to compare the relative amplitudes of rigid and elastic degrees of freedom at each coupled mode frequency. Simple literal expressions are obtained for each of these descriptors and physical interpretations given. Time vector diagrams are also used to show the major parameters affecting coupling. (Author).
Download or read book Catalogue of the University of Michigan written by University of Michigan and published by . This book was released on 1957 with total page 1054 pages. Available in PDF, EPUB and Kindle. Book excerpt: Announcements for the following year included in some vols.
Download or read book Creep Deformation Patterns of Joints Under Bearing and Tensile Loads written by E. G. Bodine and published by . This book was released on 1957 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of the present investigation was to study the interaction of bearing and tensile loads on the creep behavior of joints. To achieve this objective, a simplified model was employed which contained many of the features found in riveted connections. Through the use of this simulated joint, an analysis of complex regions in actual joints could be effected. In the study, results for a number of tensile-to-bearing load ratios were obtained, and the results were analyzed.
Download or read book University of Michigan Official Publication written by and published by UM Libraries. This book was released on 1957 with total page 1136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Aeroelasticity in Stability and Control written by United States. Department of the Air Force. Wright Air Development Center and published by . This book was released on 1957 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Elasticity of an Aircraft Structure on the Deflection of Elevator Control Lever and on the Controlling Forces During Stable Flights written by Vladimir Tichopád and published by . This book was released on 1969 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermal Effects on Static Aeroelastic Stability and Control sup Description and results of tests conducted to determine the thermally affected behavior of corrugated multiweb wing structures by J F Quinn written by Bell Aircraft Corp and published by . This book was released on 1959 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Introduction to Nonlinear Aeroelasticity written by Grigorios Dimitriadis and published by John Wiley & Sons. This book was released on 2017-03-01 with total page 593 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to Nonlinear Aeroelasticity Introduces the latest developments and technologies in the area of nonlinear aeroelasticity Nonlinear aeroelasticity has become an increasingly popular research area in recent years. There have been many driving forces behind this development, increasingly flexible structures, nonlinear control laws, materials with nonlinear characteristics and so on. Introduction to Nonlinear Aeroelasticity covers the theoretical basics in nonlinear aeroelasticity and applies the theory to practical problems. As nonlinear aeroelasticity is a combined topic, necessitating expertise from different areas, the book introduces methodologies from a variety of disciplines such as nonlinear dynamics, bifurcation analysis, unsteady aerodynamics, non-smooth systems and others. The emphasis throughout is on the practical application of the theories and methods, so as to enable the reader to apply their newly acquired knowledge Key features: Covers the major topics in nonlinear aeroelasticity, from the galloping of cables to supersonic panel flutter Discusses nonlinear dynamics, bifurcation analysis, numerical continuation, unsteady aerodynamics and non-smooth systems Considers the practical application of the theories and methods Covers nonlinear dynamics, bifurcation analysis and numerical methods Accompanied by a website hosting Matlab code Introduction to Nonlinear Aeroelasticity is a comprehensive reference for researchers and workers in industry and is also a useful introduction to the subject for graduate and undergraduate students across engineering disciplines.
