Aerodynamics of Low Reynolds Number Flyers

Author: Wei Shyy
Publisher: Cambridge University Press
ISBN: 113946891X
Format: PDF, Mobi
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Low Reynolds number aerodynamics is important to a number of natural and man-made flyers. Birds, bats, and insects have been of interest to biologists for years, and active study in the aerospace engineering community, motivated by interest in micro air vehicles (MAVs), has been increasing rapidly. The focus of this book is the aerodynamics associated with fixed and flapping wings. The book considers both biological flyers and MAVs, including a summary of the scaling laws which relate the aerodynamics and flight characteristics to a flyer's sizing on the basis of simple geometric and dynamics analyses, structural flexibility, laminar-turbulent transition, airfoil shapes, and unsteady flapping wing aerodynamics. The interplay between flapping kinematics and key dimensionless parameters such as the Reynolds number, Strouhal number, and reduced frequency is highlighted. The various unsteady lift enhancement mechanisms are also addressed.

Handbook of Fluid Dynamics Second Edition

Author: Richard W. Johnson
Publisher: CRC Press
ISBN: 1439849579
Format: PDF, ePub, Mobi
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Handbook of Fluid Dynamics offers balanced coverage of the three traditional areas of fluid dynamics—theoretical, computational, and experimental—complete with valuable appendices presenting the mathematics of fluid dynamics, tables of dimensionless numbers, and tables of the properties of gases and vapors. Each chapter introduces a different fluid dynamics topic, discusses the pertinent issues, outlines proven techniques for addressing those issues, and supplies useful references for further research. Covering all major aspects of classical and modern fluid dynamics, this fully updated Second Edition: Reflects the latest fluid dynamics research and engineering applications Includes new sections on emerging fields, most notably micro- and nanofluidics Surveys the range of numerical and computational methods used in fluid dynamics analysis and design Expands the scope of a number of contemporary topics by incorporating new experimental methods, more numerical approaches, and additional areas for the application of fluid dynamics Handbook of Fluid Dynamics, Second Edition provides an indispensable resource for professionals entering the field of fluid dynamics. The book also enables experts specialized in areas outside fluid dynamics to become familiar with the field.

Advanced UAV Aerodynamics Flight Stability and Control

Author: Pascual Marques
Publisher: John Wiley & Sons
ISBN: 1118928687
Format: PDF, ePub, Mobi
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Comprehensively covers emerging aerospace technologies Advanced UAV aerodynamics, flight stability and control: Novel concepts, theory and applications presents emerging aerospace technologies in the rapidly growing field of unmanned aircraft engineering. Leading scientists, researchers and inventors describe the findings and innovations accomplished in current research programs and industry applications throughout the world. Topics included cover a wide range of new aerodynamics concepts and their applications for real world fixed-wing (airplanes), rotary wing (helicopter) and quad-rotor aircraft. The book begins with two introductory chapters that address fundamental principles of aerodynamics and flight stability and form a knowledge base for the student of Aerospace Engineering. The book then covers aerodynamics of fixed wing, rotary wing and hybrid unmanned aircraft, before introducing aspects of aircraft flight stability and control. Key features: Sound technical level and inclusion of high-quality experimental and numerical data. Direct application of the aerodynamic technologies and flight stability and control principles described in the book in the development of real-world novel unmanned aircraft concepts. Written by world-class academics, engineers, researchers and inventors from prestigious institutions and industry. The book provides up-to-date information in the field of Aerospace Engineering for university students and lecturers, aerodynamics researchers, aerospace engineers, aircraft designers and manufacturers.

Biomimetics

Author: Yoseph Bar-Cohen
Publisher: CRC Press
ISBN: 1439834776
Format: PDF, Kindle
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Mimicking nature – from science fiction to engineering reality Humans have always looked to nature’s inventions as a source of inspiration. The observation of flying birds and insects leads to innovations in aeronautics. Collision avoidance sensors mimic the whiskers of rodents. Optimization algorithms are based on survival of the fittest, the seed-picking process of pigeons, or the behavior of ant colonies. In recent years these efforts have become more intensive, with researchers seeking rules, concepts, and principles of biology to inspire new possibilities in materials, mechanisms, algorithms, and fabrication processes. A review of the current state of the art, Biomimetics: Nature Based Innovation documents key biological solutions that provide a model for innovations in engineering and science. Leading experts address a wide range of topics, including: Artificial senses and organs Mimicry at the cell–materials interface Multiscale modeling of plant cell wall architecture and tissue mechanics The making of biomimetic composites Electroactive polymer (EAP) actuators as artificial muscles EAP-based refreshable braille displays Biomimetic optics from the angles of biology and plants Biomimicry of flying birds, insects, and marine biology Applications of biomimetics in manufacturing, products, and medicine Robotics, including the development of human-like robots Biologically inspired design as a tool for interdisciplinary education The biomimetic process in artistic creation The final chapter outlines the challenges to biomimetic-related innovation and offers a vision for the future. A follow-up to Biomimetics: Biologically Inspired Technologies (2005), this comprehensive reference methodically surveys the latest advances in this rapidly emerging field. It features an abundance of illustrations, including a 32-page full-color insert, and provides extensive references for engineers and scientists interested in delving deeper into the study of biomimetics.

An Introduction to Flapping Wing Aerodynamics

Author: Wei Shyy
Publisher: Cambridge University Press
ISBN: 1107067987
Format: PDF, Kindle
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This is an ideal book for graduate students and researchers interested in the aerodynamics, structural dynamics and flight dynamics of small birds, bats and insects, as well as of micro air vehicles (MAVs), which present some of the richest problems intersecting science and engineering. The agility and spectacular flight performance of natural flyers, thanks to their flexible, deformable wing structures, as well as to outstanding wing, tail and body coordination, is particularly significant. To design and build MAVs with performance comparable to natural flyers, it is essential that natural flyers' combined flexible structural dynamics and aerodynamics are adequately understood. The primary focus of this book is to address the recent developments in flapping wing aerodynamics. This book extends the work presented in Aerodynamics of Low Reynolds Number Flyers (Shyy et al. 2008).

Der Vogelflug als Grundlage der Fliegekunst

Author: Otto Lilienthal
Publisher: mach-mir-ein-ebook.de
ISBN: 3944309111
Format: PDF, Mobi
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„Wie ein Vogel zu fliegen“, das war der Traum von Otto Lilienthal und seines Bruders Georg. Nachdem die beiden Brüder jahrelang die physikalischen Grundlagen des Vogelfluges erforschten, veröffentlichte Lilienthal am 5. Dezember 1889 dieses Buch, das hier erstmals als E-Book erscheint. Auch wenn das zeitgenössische Interesse an diesem Buch eher gering war, da die breite Öffentlichkeit die Luftfahrt nach dem Prinzip „leichter als Luft“, die Weiterentwicklung des Ballons zum Luftschiff, favorisierte, stellt es dennoch die wichtigste flugtechnische Veröffentlichung des 19. Jahrhunderts dar. Die charakteristische Flügelform der Vögel war auch anderen Flugtechnikern nicht entgangen, doch die Gebrüder Lilienthal haben sie erstmals mit exakten Messungen verbunden und publiziert. Der heutige Reiz dieses Buch liegt weniger darin, ein modernes Lehrbuch der Aerodynamik zu ersetzen, sondern sich darin in die Frühzeit der Luftfahrt zu begeben. Otto Lilienthal betont in seinem Vorwort, dass das Buch für alle geschrieben wurde, die die Grundlagen des Vogelfluges und damit der Fliegerei kennenlernen wollen. Das Buch kommt mit sehr wenigen mathematischen Formeln aus und beschreibt detailliert die Experimente der beiden Brüder und ihre daraus gezogenen Schlussfolgerungen. Es enthält 80 Illustrationen zu ihren Experimenten und Gedankengängen. Dieses Buch ist für alle an der Geschichte der Luftfahrttechnik Interessierten eine äußerst spannende Lektüre, auch wenn sich Lilienthal in einigen Punkten über die Zukunft der Luftfahrt geirrt hat, wie das folgende Zitat aus dem Buch zeigt: „Die verschiedenartige Ausführung unserer Versuchskörper überzeugte uns, dass die Metalle überhaupt zum Flügelbau nicht zu gebrauchen sind, und dass die Zukunftsflügel wahrscheinlich aus Weidenruten mit leichter Stoffbespannung bestehen werden.“

AIAA Journal

Author: American Institute of Aeronautics and Astronautics
Publisher:
ISBN:
Format: PDF, Docs
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