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Author : Anand Gopa Kumar
Publisher :
ISBN 13 :
Total Pages : 127 pages
Book Rating : 4.:/5 (56 download)
Download or read book Experimental Investigation of Bio Inspired Flapping Wings for MAV and NAV Applications written by Anand Gopa Kumar and published by . This book was released on 2009 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Zaeem Khan
Publisher :
ISBN 13 : 9781109386585
Total Pages : pages
Book Rating : 4.3/5 (865 download)
Download or read book Modeling, Optimal Kinematics, and Flight Control of Bio-inspired Flapping Wing Micro Air Vehicles written by Zaeem Khan and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ?Pub Inc Micro air vehicles (MAV) provide an attractive solution for carrying out missions such as searching for survivors inside burning buildings or under collapsed structures, remote sensing of hazardous chemical and radiation leaks and surveillance and reconnaissance. MAVs can be miniature airplanes and helicopters, however, nature has micro air vehicles in the form of insects and hummingbirds, which outperform conventional designs and are therefore, ideal for MAV missions. Hence, there is a need to develop a biomimetic flapping wing micro air vehicle (FWMAV). In this work, theoretical and experimental research is undertaken in order to reverse engineer the complicated design of biological MAVs. Mathematical models of flapping wing kinematics, aerodynamics, thorax musculoskeletal system and flight dynamics were developed and integrated to form a generic model of insect flight. For experimental work, a robotic flapper was developed to mimic insect wing kinematics and aerodynamics. Using a combination of numerical optimization, experiments and theoretical analysis, optimal wing kinematics and thorax dynamics was determined. The analysis shows remarkable features in insect wings which significantly improve aerodynamic performance. Based on this study, tiny flapping mechanisms were developed for FWMAV application. These mechanisms mimic the essential mechanics of the insect thorax. Experimental evaluation of these mechanisms confirmed theoretical findings. The analysis of flight dynamics revealed the true nature of insect flight control which led to the development of controllers for semi-autonomous flight of FWMAV. Overall, this study not only proves the feasibility of biomimetic flapping wing MAV but also proves its advantages over conventional designs. In addition, this work also motivates further research in biological systems.
Author : Arun Agrawal
Publisher : ProQuest
ISBN 13 : 9780549924890
Total Pages : pages
Book Rating : 4.9/5 (248 download)
Download or read book Design of Bio-inspired Flexible Flapping Wing for MAV Application written by Arun Agrawal and published by ProQuest. This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Motivated by the demands for indoor reconnaissance in confined, hazardous, or inaccessible spaces, like tunnels, machine rooms, staircases etc., there has been much interest, over the past decade towards the design of hand-held- micro air vehicles (MAVs). However, the flapping flight of insects shows an unmatched performance. A key aspect of the insect flight, responsible for the generation of the aerodynamic forces in an efficient manner, is the flexibility of their wings. Insect wings are actuated only at the root, and undergo large deformations with passive shape adaptation during flapping. Bio-inspired design of a flexible mechanical wing for micro-air vehicle application is the focus of the current work, which is motivated by the superlative flight performance of hawkmoths. The distinguishing feature of an insect wing is the arrangement and the stiffness distribution of various veins. For the design of a mechanical wing, a two step procedure is followed: (i) the static load-deflection characteristics are measured experimentally for a real hawkmoth wing using a camera vision system; (ii) finite element analysis coupled with an optimization solver is used to design the mechanical wing whose overall static-load-deflection characteristics match with the observed load-deflection of the hawkmoth wing. The moduli of various veins in the design wing are selected as optimization variables in the finite element model to manipulate the stiffness distribution of the mechanical wing. The objective function in the optimization scheme is decoupled based on various observations from the design of insect wing found in nature, the finite element analysis, and the structural mechanics based on cantilever beam theory. Based on the design, a scaled mechanical wing is constructed. Finally, the aerodynamic performance of the bio-inspired flexible mechanical wing is tested on a robotic flapper, with commonly observed kinematics of flying insects, and compared with that of a similar geometry rigid wing.
Author : G.C.H.E. de Croon
Publisher : Springer
ISBN 13 : 9401792089
Total Pages : 221 pages
Book Rating : 4.4/5 (17 download)
Download or read book The DelFly written by G.C.H.E. de Croon and published by Springer. This book was released on 2015-11-26 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the topics most relevant to autonomously flying flapping wing robots: flapping-wing design, aerodynamics, and artificial intelligence. Readers can explore these topics in the context of the "Delfly", a flapping wing robot designed at Delft University in The Netherlands. How are tiny fruit flies able to lift their weight, avoid obstacles and predators, and find food or shelter? The first step in emulating this is the creation of a micro flapping wing robot that flies by itself. The challenges are considerable: the design and aerodynamics of flapping wings are still active areas of scientific research, whilst artificial intelligence is subject to extreme limitations deriving from the few sensors and minimal processing onboard. This book conveys the essential insights that lie behind success such as the DelFly Micro and the DelFly Explorer. The DelFly Micro, with its 3.07 grams and 10 cm wing span, is still the smallest flapping wing MAV in the world carrying a camera, whilst the DelFly Explorer is the world's first flapping wing MAV that is able to fly completely autonomously in unknown environments. The DelFly project started in 2005 and ever since has served as inspiration, not only to many scientific flapping wing studies, but also the design of flapping wing toys. The combination of introductions to relevant fields, practical insights and scientific experiments from the DelFly project make this book a must-read for all flapping wing enthusiasts, be they students, researchers, or engineers.
Author : Sean J. Duggan
Publisher :
ISBN 13 : 9781423551676
Total Pages : 70 pages
Book Rating : 4.5/5 (516 download)
Download or read book An Experimental Investigation of Flapping Wing Propulsion for Micro Air Vehicles written by Sean J. Duggan and published by . This book was released on 2000-06-01 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flapping-wing propulsion is studied experimentally through thrust measurements and flow visualization. The objective of the research is to provide further insight into the aerodynamics of flapping-wing micro air vehicles (MAVs) . Experimental work is conducted in the NPS 1.5 m x 1.5 m in-draft wind tunnel. A previously constructed model is suspended by thin wires and is used to measure the thrust performance of the flapping-wing MAV. For this experiment, the model is tested in four configurations; three with varying wing mount stiffness and the fourth with an articulated pitch mechanism. Thrust is indirectly determined using a laser range-finder to measure stream-wise displacement of the model. Three methods of flow visualization are attempted to gain further insight into the flow-field around the MAV. First tufts are placed on and around the model to identify the flow-field Second, a smoke rake placed outside the tunnel is used to route smoke into the test section. Thirdly, a smoke wire system is used to produce smoke in the test section. Experimental results are compared with flow visualization results and previous experimental and numerical work.
Author : Jason Papadopoulos
Publisher :
ISBN 13 : 9781423501237
Total Pages : 89 pages
Book Rating : 4.5/5 (12 download)
Download or read book An Experimental Investigation of the Geometric Characteristics of Flapping-Wing Propulsion for a Micro Air Vehicle written by Jason Papadopoulos and published by . This book was released on 2003-06-01 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: The geometric characteristics of flapping-wing propulsion are studied experimentally through the use of a force balance and a Micro Air Vehicle (MAV) system. The system used is built to duplicate the propulsion system currently on the flying model at the Naval Postgraduate School (NPS) MAV model. Experiments are carried out in a low speed wind tunnel to determine the effects of mean separation and plunge amplitude on the flapping wing propulsion system. Additionally, the effects on flapping wing shape, frequency, and MAV angle on attack (AoA) are also investigated. Some flow visualization is also performed. The intent is to optimize the system so that payload and controllability improvements can be made to the NPS MAV.
Author : T. J. Mueller
Publisher : Amer Inst of Aeronautics &
ISBN 13 : 9781563478499
Total Pages : 287 pages
Book Rating : 4.4/5 (784 download)
Download or read book Introduction to the Design of Fixed-wing Micro Air Vehicles written by T. J. Mueller and published by Amer Inst of Aeronautics &. This book was released on 2007-01 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: This intriguing book breaks new ground on an emerging subject that has attracted considerable attention: the use of unmanned micro air vehicles (MAVs) to conduct special, limited duration missions. Significant advances in the miniaturization of electronics make it now possible to use vehicles of this type in a detection or surveillance role to carry visual, acoustic, chemical, or biological sensors. Interestingly, many of the advances in MAV technology can be traced directly to annual student competitions, begun in the late 1990s, that use relatively low cost model airplane equipment. The wide variety of configurations entered in these contests and their ongoing success has led to a serious interest in testing the performance of these vehicles for adaptation to practical applications. MAVs present aerodynamic issues unique to their size and the speeds at which they operate. Of particular concern is the aerodynamic efficiency of various fixed wing concepts. Very little information on the performance of low aspect ratio wing planforms existed for this flight regime until MAVs became of interest and the proliferation of fixed wing designs has since expanded. This book presents a brief history of unmanned air vehicles and offers elements of aerodynamics for low aspect ratio wings. Propulsion and the basic concepts for fixed wing MAV design are presented, as is a method for autopilot integration. Three different wing configurations are presented in a series of step-by-step case studies. The goal of the book is to assist both working professionals and students to design, build, and fly MAVs, and do so in a way that will advance the state of the art and lead to the development of even smalleraircraft.
Author : David E. Alexander
Publisher : JHU Press
ISBN 13 : 9780801880599
Total Pages : 390 pages
Book Rating : 4.8/5 (85 download)
Download or read book Nature's Flyers written by David E. Alexander and published by JHU Press. This book was released on 2004-11-17 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'Nature's Flyers' is a detailed account of the current scientific understanding of the primary aspects of flight in nature. The author explains the physical basis of flight, drawing upon bats, birds, insects, pterosaurs and even winged seeds.
Download or read book BATMAV: A Biologically-Inspired Micro-Air Vehicle for Flapping Flight - Kinematic Modeling written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of the BATMAV project is the development of a biologically inspired bat-like Micro-Aerial Vehicle with flexible and foldable wings, capable of flapping flight. This phase of the project starts with an analysis of several small-scale natural flyers from an engineering point of view with the objective to identify the most suitable platform for such a vehicle. Bats are shown to be very agile and efficient flyers with mechanical parameters well-suited to be realized with currently available muscle wire actuators allowing for close bio-inspired actuation. The second part of this thesis focuses on the kinematical analysis of the wing motion with the intent to develop a smart material (shape memory alloy) driven actuator system mimicking the functionality of the bat's relevant muscle groups in the future. In the past decade Micro-Aerial Vehicles (MAV's) have drawn a great interest to military operations, search and rescue, surveillance technologies and aerospace engineering in general. Traditionally these devices use fixed or rotary wings actuated with electric DC motor-transmission, with consequential weight and stability disadvantages. SMA wire actuated flexible wings for flapping flight are promising due to increased energy density while decreasing weight, increased maneuverability and obstacle avoidance, easier navigation in small spaces and better wind gust stability. While flapping flight in MAV has been previously studied and a number of models were realized using light nature-inspired rigid wings, this paper presents a platform that features bat-inspired wings with flexible joints and muscle-wire actuation to allow mimicking the kinematics of the real flyer. The bat was chosen after an extensive analysis of the flight physics of birds, bats and large insects. Typical engineering parameters such as wing loading, wing beat frequency etc. were studied and it was concluded that bats are a suitable platform that can be actuated efficiently using micro.
Author : Hao Li
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (137 download)
Download or read book Aeroelastic Investigation of Conventional Fixed Wings and Bio-inspired Flapping Wings by Analysis and Experiment written by Hao Li and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Wole Soboyejo
Publisher : Cambridge University Press
ISBN 13 : 1107015588
Total Pages : 373 pages
Book Rating : 4.1/5 (7 download)
Download or read book Bioinspired Structures and Design written by Wole Soboyejo and published by Cambridge University Press. This book was released on 2020-09-17 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: Human cortical bone as a structural material : Hierarchical design and biological degradation / Robert Ritchie and Elizabeth A. Zimmermann -- Bio-inspiration from nacre / Nima Rahbar and Sina Askarinejad -- Bio-inspiration from bamboo / Ting Tan and Wole Soboyejo.
Author : Mostafa Hassanalian
Publisher :
ISBN 13 :
Total Pages : 210 pages
Book Rating : 4.:/5 (1 download)
Download or read book Wing Shape Design and Kinematic Optimization of Bio-inspired Nano Air Vehicles for Hovering and Forward Flight Purposes written by Mostafa Hassanalian and published by . This book was released on 2016 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nowadays, there is a growing need for flying drones with diverse capabilities for both civilian and military applications. There is also a significant interest in the development of novel drones that can autonomously fly in different environments and locations, and can perform various missions. In the past decade, the broad spectrum of applications of these drones has received great attention, which has subsequently led to the invention of various types of drones with different sizes and weights. One type of drone that has received attention by drone researchers is flapping wing nano air vehicles (NAVs). In design of these micro drones, shape and kinematics of the wing have been identified as important factors in the assessment of flight performance. As such, this work will focus on the wing shape and kinematics of flapping wing nano air vehicles with hovering and forward flight capability. These factors require an optimal design in terms of decreasing the needed aerodynamic and input power, and increasing the propulsive efficiency. This research evaluates bioinspired wing designs to determine the best shape for hovering and forward flight applications, with a particular focus on insects, which are regarded as ideal natural avian flier in hovering flight. Specifically, this research will focus on seven insect wings, and because of the difference in the original bio-inspired shape of these wings, two scenarios are studied, namely, considering the same wingspan and same wing surface. Using quasi-steady approximation to model aerodynamic loads and the gradient method approach to optimize the kinematics of the wing, the optimum Euler angles, required aerodynamic power, and hence the best wing shape for each scenario are analytically determined in hovering flight mode. It is demonstrated that the twisted parasite wing shape is a good candidate for minimizing the required aerodynamic power during hovering. Also, for forward flight application, strip theory is utilized to model and optimize the kinematics of the seven wings with a particular investigation on the impacts of the dynamic twist on the performance of bio-inspired nano air vehicles. A parametric study is then carried out to determine the optimum wing shape and associated dynamic twist of the flapping wing nano air vehicle when considering two scenarios same as hovering mode. Findings from this research show that for the same wingspan and wing surface, the honeybee and bumble bee wing shapes have the optimum performances, respectively. The performed analysis gives guidelines on the optimum design of flapping wing nano air vehicles for hovering and forward flight applications.
Author : Taylor Alexander Swanson
Publisher :
ISBN 13 :
Total Pages : 254 pages
Book Rating : 4.:/5 (53 download)
Download or read book An Experimental and Numerical Investigation of Flapping and Plunging Wings written by Taylor Alexander Swanson and published by . This book was released on 2009 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Micro air vehicles, or MAVs, are of current interest for a multitude of uses to which they, being small, unmanned vehicles, are uniquely suited. Among the proposed uses are exploration, reconnaissance, and communications. They can be deployed inside buildings, where their small size, hovering capability, and maneuverability, are important factors. Due to their small size, they operate at low Reynolds numbers where conventional flying mechanisms are not advantageous. Thus, attempts have been made to learn from natural flyers like insects and birds. Natural flight is accomplished by flapping wings, and this idea has been proposed for certain types of MAVs termed ornithopters and entomopters. This dissertation investigates the aerodynamics applicable to low Reynolds number unsteady flow, and consists of four stages. The first stage is CFD for fixed wings at low Reynolds number. In the second and third stage, experiments are conducted on flapping and plunging wings. The final stage consists of dynamic mesh CFD for a plunging airfoil"--Abstract, leaf iii.
Author : Wei Shyy
Publisher : Cambridge University Press
ISBN 13 : 1107067987
Total Pages : 321 pages
Book Rating : 4.1/5 (7 download)
Download or read book An Introduction to Flapping Wing Aerodynamics written by Wei Shyy and published by Cambridge University Press. This book was released on 2013-08-19 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).
Author : Zaeem A. Khan
Publisher :
ISBN 13 :
Total Pages : 226 pages
Book Rating : 4.:/5 (611 download)
Download or read book Experimental Investigation and Modeling of Flapping Wing Aerodynamics written by Zaeem A. Khan and published by . This book was released on 2005 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : G. S. V. L. Narasimham
Publisher : Springer Nature
ISBN 13 : 9811672822
Total Pages : 809 pages
Book Rating : 4.8/5 (116 download)
Download or read book Innovations in Mechanical Engineering written by G. S. V. L. Narasimham and published by Springer Nature. This book was released on 2022-03-02 with total page 809 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises select proceedings of the International Conference on Innovations in Mechanical Engineering (ICIME 2021). It presents innovative ideas and new findings in the field of mechanical engineering. Various topics covered in this book are aerospace engineering, automobile engineering, thermal engineering, renewable energy sources, bio-mechanics, fluid mechanics, MEMS, mechatronics, robotics, CAD/CAM, CAE, CFD, design andoptimization, tribology, materials engineering and metallurgy, mimics, surface engineering, nanotechnology, polymer science, manufacturing, production management, industrial engineering and rapid prototyping. This book will be useful for the students, researchers and professionals working in the various areas of mechanical engineering.
Author : Matko Orsag
Publisher : Springer
ISBN 13 : 3319610228
Total Pages : 246 pages
Book Rating : 4.3/5 (196 download)
Download or read book Aerial Manipulation written by Matko Orsag and published by Springer. This book was released on 2017-09-19 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text is a thorough treatment of the rapidly growing area of aerial manipulation. It details all the design steps required for the modeling and control of unmanned aerial vehicles (UAV) equipped with robotic manipulators. Starting with the physical basics of rigid-body kinematics, the book gives an in-depth presentation of local and global coordinates, together with the representation of orientation and motion in fixed- and moving-coordinate systems. Coverage of the kinematics and dynamics of unmanned aerial vehicles is developed in a succession of popular UAV configurations for multirotor systems. Such an arrangement, supported by frequent examples and end-of-chapter exercises, leads the reader from simple to more complex UAV configurations. Propulsion-system aerodynamics, essential in UAV design, is analyzed through blade-element and momentum theories, analysis which is followed by a description of drag and ground-aerodynamic effects. The central part of the book is dedicated to aerial-manipulator kinematics, dynamics, and control. Based on foundations laid in the opening chapters, this portion of the book is a structured presentation of Newton–Euler dynamic modeling that results in forward and backward equations in both fixed- and moving-coordinate systems. The Lagrange–Euler approach is applied to expand the model further, providing formalisms to model the variable moment of inertia later used to analyze the dynamics of aerial manipulators in contact with the environment. Using knowledge from sensor data, insights are presented into the ways in which linear, robust, and adaptive control techniques can be applied in aerial manipulation so as to tackle the real-world problems faced by scholars and engineers in the design and implementation of aerial robotics systems. The book is completed by path and trajectory planning with vision-based examples for tracking and manipulation.
