A Feasibility Study To Control Airfoil Shape Using Thunder
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A Feasibility Study To Control Airfoil Shape Using Thunder
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Author : Jennifer L. Pinkerton
language : en
Publisher:
Release Date : 1997
A Feasibility Study To Control Airfoil Shape Using Thunder written by Jennifer L. Pinkerton and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Aerodynamic load categories.
A Feasibility Study To Control Airfoil Shape Using Thunder
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Author : National Aeronautics and Space Adm Nasa
language : en
Publisher:
Release Date : 2018-10-23
A Feasibility Study To Control Airfoil Shape Using Thunder written by National Aeronautics and Space Adm Nasa and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-23 with categories.
The objective of this study was to assess the capabilities of a new out-of-plane displacement piezoelectric actuator called thin-layer composite-unimorph ferroelectric driver and sensor (THUNDER) to alter the upper surface geometry of a subscale airfoil to enhance performance under aerodynamic loading. Sixty test conditions, consisting of combinations of five angles of attack, four dc applied voltages, and three tunnel velocities, were studied in a tabletop wind tunnel. Results indicated that larger magnitudes of applied voltage produced larger wafer displacements. Wind-off displacements were also consistently larger than wind-on. Higher velocities produced larger displacements than lower velocities because of increased upper surface suction. Increased suction also resulted in larger displacements at higher angles of attack. Creep and hysteresis of the wafer, which were identified at each test condition, contributed to larger negative displacements for all negative applied voltages and larger positive displacements for the smaller positive applied voltage (+102 V). An elastic membrane used to hold the wafer to the upper surface hindered displacements at the larger positive applied voltage (+170 V). Both creep and hysteresis appeared bounded based on the analysis of several displacement cycles. These results show that THUNDER can be used to alter the camber of a small airfoil under aerodynamic loads. Pinkerton, Jennifer L. and Moses, Robert W. Langley Research Center RTOP 505-63-50-13...
A Feasibility Study To Control Airfoil Shape Using Thunder
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Author : Jennifer L. Pinkerton
language : en
Publisher:
Release Date : 1997
A Feasibility Study To Control Airfoil Shape Using Thunder written by Jennifer L. Pinkerton and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.
A Feasibility Study To Control Airfoil Shape Using Thunder Nasa Tm 4767 Dec 16 1997
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Author : United States. National Aeronautics and Space Administration
language : en
Publisher:
Release Date : 1999*
A Feasibility Study To Control Airfoil Shape Using Thunder Nasa Tm 4767 Dec 16 1997 written by United States. National Aeronautics and Space Administration and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999* with categories.
Proceedings Of The 5th Ieee Iftomm International Conference On Reconfigurable Mechanisms And Robots
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Author : Fengfeng (Jeff) Xi
language : en
Publisher: ReMAR2021
Release Date : 2021-08-12
Proceedings Of The 5th Ieee Iftomm International Conference On Reconfigurable Mechanisms And Robots written by Fengfeng (Jeff) Xi and has been published by ReMAR2021 this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-08-12 with Technology & Engineering categories.
The 5th IEEE/IFToMM International Conference on Re-configurable Mechanisms and Robots (ReMAR 2021) was held in Toronto, Canada on August 12-14, 2021 at Ryerson University. The conference proceedings include more than 70 papers on three main subjects, 1) Reconfigurable Mechanisms and Robotics, 2) Variable Topology and Morphing Mechanism, and 3)Origami and Bio-inspired mechanisms.
Structures Technology For Future Aerospace Systems
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Author : Ahmed Khairy Noor
language : en
Publisher: AIAA
Release Date : 2000
Structures Technology For Future Aerospace Systems written by Ahmed Khairy Noor and has been published by AIAA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Airframes categories.
Smart Composites
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Author : Rani Elhajjar
language : en
Publisher: CRC Press
Release Date : 2013-12-14
Smart Composites written by Rani Elhajjar and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-12-14 with Science categories.
Smart Composites: Mechanics and Design addresses the current progress in the mechanics and design of smart composites and multifunctional structures. Divided into three parts, it covers characterization of properties, analyses, and design of various advanced composite material systems with an emphasis on the coupled mechanical and non-mechanical behaviors. Part one includes analyses of smart materials related to electrically conductive, magnetostrictive nanocomposites and design of active fiber composites. These discussions include several techniques and challenges in manufacturing smart composites and characterizing coupled properties, as well as the analyses of composite structures at various length and time scales undergoing coupled mechanical and non-mechanical stimuli considering elastic, viscoelastic (and/or viscoplastic), fatigue, and damage behaviors. Part two is dedicated to a higher-scale analysis of smart structures with topics such as piezoelectrically actuated bistable composites, wing morphing design using macrofiber composites, and multifunctional layered composite beams. The analytical expressions for characterization of the smart structures are presented with an attention to practical application. Finally, part three presents recent advances regarding sensing and structural health monitoring with a focus on how the sensing abilities can be integrated within the material and provide continuous sensing, recognizing that multifunctional materials can be designed to both improve and enhance the health-monitoring capabilities and also enable effective nondestructive evaluation. Smart Composites: Mechanics and Design is an essential text for those interested in materials that not only possess the classical properties of stiffness and strength, but also act as actuators under a variety of external stimuli, provide passive and active response to enable structural health monitoring, facilitate advanced nondestructive testing strategies, and enable shape-changing and morphing structures.
Piezoelectric And Acoustic Materials For Transducer Applications
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Author : Ahmad Safari
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-09-11
Piezoelectric And Acoustic Materials For Transducer Applications written by Ahmad Safari and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-09-11 with Technology & Engineering categories.
Piezoelectric and Acoustic Materials for Transducer Applications combines discussion of the physical properties of piezoelectric and acoustic materials, with the fundamentals, design principles and fabrication methods, and their application in transducers. This book serves as a comprehensive reference on all aspects of piezoelectric materials, such as thermodynamics, crystallography, crystal chemistry, and piezoelectric composite fabrication techniques as they pertain to piezoelectric transducer design and applications. The chapters in this book cover a wide range of topics, which are separated into four sections: Section I. Fundamentals of Piezoelectricity Section II. Piezoelectric and Acoustic Materials for Transducer Technology Section III. Transducer Design and Principles Section IV. Piezoelectric Transducer Fabrication Methods Piezoelectric and Acoustic Materials for Transducer Applications is written by a diverse group of renowned experts from around the world, and is appropriate for scientists and engineers in a variety of disciplines.
Nasa Conference Publication
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Author :
language : en
Publisher:
Release Date : 1999
Nasa Conference Publication written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Aeronautics categories.
Proceedings Of The 5th International Symposium On Fluid Structure Interactions Aeroelasticity Flow Induced Vibration And Noise
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Author : M. P. Paidoussis
language : en
Publisher:
Release Date : 2002
Proceedings Of The 5th International Symposium On Fluid Structure Interactions Aeroelasticity Flow Induced Vibration And Noise written by M. P. Paidoussis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Aeroelasticity categories.