Download or read book The Characterization of Material Properties and Structural Dynamics of the Manduca Sexta Forewing for Application to Flapping Wing Micro Air Vehicle Design written by Ryan P. O'Hara and published by . This book was released on 2012 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biomimetic and Biohybrid Systems written by Uriel Martinez-Hernandez and published by Springer. This book was released on 2019-07-05 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the proceedings of the 8th International Conference on Biomimetic and Biohybrid Systems, Living Machines 2019, held in Nara, Japan, in July 2019. The 26 full and 16 short papers presented in this volume were carefully reviewed and selected from 45 submissions. They deal with research on novel life-like technologies inspired by the scientific investigation of biological systems, biomimetics, and research that seeks to interface biological and artificial systems to create biohybrid systems.
Download or read book Biomimetic and Biohybrid Systems written by Stuart P. Wilson and published by Springer. This book was released on 2015-07-23 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the proceedings of the 4th International Conference on Biomimetic and Biohybrid Systems, Living Machines 2015, held in Barcelona, Spain, in July 2015. The 34 full and 13 short papers presented in this volume were carefully reviewed and selected from 50 submissions. The themes they deal with are: locomotion, particularly for soft-bodies; novel sensing and autonomous control systems; and cognitive architectures, social robots, and human-robot interaction.
Download or read book A Structural Dynamic Analysis of a Manduca Sexta Forewing written by Travis W. Sims and published by . This book was released on 2010 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of the Thorax of Manduca Sexta for Flapping Wing Micro Air Vehicle Applications written by Alex C. Hollenbeck and published by . This book was released on 2012 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of the Thorax of Manduca Sexta for Flapping Wing Micro Air Vehicle Applications written by Brian C. Cranston and published by . This book was released on 2012 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Characterization of the Structural Dynamics and Aero structural Sensitivity of a Hawkmoth Wing Toward the Development of Design Rules for Flapping wing Micro Air Vehicles written by Aaron G. Norris (LT COL, USAF) and published by . This book was released on 2013 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Characterization Design Analysis and Optimization of Flexible Flapping Wings for Micro Air Vehicles written by Pin Wu and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT:This work has advanced the understanding of flapping flight of flexible wings designed to be used in micro air vehicles. A complete new experimental setup that includes a wing actuation mechanism, a customized digital image correlation system, a control system, a load sensor and a vacuum chamber is realized for this study. The technique of digital image correlation has also been developed so that complicated wing kinematics and deformation can be measured. The flapping wing effectiveness and efficiency have been evaluated in different conditions. The results indicate that passive wing deformation can be utilized to enhance aerodynamic performance, under certain inertial loading mainly dictated by flapping frequency, amplitude, wing compliance and mass distribution. The wing deformation reflects the aeroelastic effect produced by the coupled aerodynamic loading as well as the inertial loading. Critical parameters extracted from the deformation data are used to characterize the structural properties of the wings and correlate with the aerodynamic performance. The correlation shows that for one-degree-of-freedom kinematics, wing deformation can be directly used to predict time averaged thrust. The intrinsic relationship between kinematics and inertial loading enables the design and optimization of wing structure based on the correlation results.
Download or read book Force Optimization and Flow Field Characterization from a Flapping Wing Mechanism written by Nathaniel Stephen Naegle and published by . This book was released on 2012 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flapping flight shows promise for micro air vehicle design because flapping wings provide superior aerodynamic performance than that of fixed wings and rotors at low Reynolds numbers. In these flight regimes, unsteady effects become increasingly important. This thesis explores some of the unsteady effects that provide additional lift to flapping wings through an experiment-based optimization of the kinematics of a flapping wing mechanism in a water tunnel. The mechanism wings and flow environment were scaled to simulate the flight of the hawkmoth (Manduca sexta) at hovering or near-hovering speeds. The optimization was repeated using rigid and flexible wings to evaluate the impact that wing flexibility has on aerodynamic performance of flapping wings. The trajectories that produced the highest lift were compared using particle image velocimetry to characterize the flow features produced during the periods of peak lift. A leading edge vortex was observed with all of the flapping trajectories and both wing types, the strength of which corresponded to the measured amount of lift of the wing. This research furthers our understanding of the lift-generating mechanisms used in nature and can be applied to improve the design of micro air vehicles.
Download or read book Development and Assessment of Artificial Manduca Sexta Forewings written by Simone Colette Michaels and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research presents novel fabrication and testing techniques for artificial insect wings. A series of static and dynamic assessments are designed which allow consistent comparison of small, flexible wings in terms of structure and performance. Locally harvested hawk moths are tested and compared to engineered wings. Data from these experiments shows that the implemented replication method results in artificial wings with comparable properties to that of M. sexta. Flexural stiffness (EI) data shows a considerable difference between the left and right M. sexta wings. Furthermore, EI values on the ventral wing side are found to be consistently higher than the dorsal side. Based on dynamic results, variations in venation structure have the largest impact on lift generation. Lift tests on individual wings and wing sets indicate detrimental effects as a result of wing-wake interaction.
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.
Download or read book Aerodynamic Performance and Particle Image Velocimetery of Piezo Actuated Biomimetic Manduca Sexta Engineered Wings Towards the Design and Application of a Flapping Wing Flight Vehicle written by Anthony M. DeLuca and published by . This book was released on 2013 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comprehensive Modeling and Control of Flexible Flapping Wing Micro Air Vehicles written by Stephen Michael Nogar and published by . This book was released on 2015 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work highlights the importance of coupled dynamics in the design and control of flapping wing micro air vehicles. Future enhancements to this work should focus on the reduced order structural and aerodynamics models. Applications include using the developed dynamics model to evaluate other kinematics and control schemes, ultimately enabling improved vehicle and control design.
Download or read book Flapping Wing Design for a Dragonfly like Micro Air Vehicle written by Daniel T. Prosser and published by . This book was released on 2011 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In this thesis, the aerodynamics of the Quad-Wing Vehicle, a Micro Air Vehicle designed to hover with four flapping wings in a dragonfly-like configuration, is investigated using Computational Fluid Dynamics (CFD), potential flows analysis, and experimental testing. The CFD analysis investigates the kinematics-parameters design space and identifies values of kinematics parameters that maximize the vertical force reduction in hovering mode while minimizing the aerodynamic power requirement. It also investigates other important considerations, such as the effect of scaling, multi-wing interactions, and comparison with other flapping configurations. In the potential flows analysis , an unsteady 2D panel code is developed and compared with CFD for a broad range of hovering-flight simulations. The results show that, with further development, panel codes may be useful to designers of hovering flapping MAVs because of their time-saving potential compared to CFD. The experimental testing focuses on isolating the aerodynamic forces from other measured forces on a benchtop flapping device, and the findings of the experimental study will be useful for later researchers using experimental methods to study flapping MAV aerodynamics."--Abstract.
Download or read book Design and Analysis of a Flapping Wing Mechanism for Optimization written by Ryan Brandon George and published by . This book was released on 2011 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: Furthering our understanding of the physics of flapping flight has the potential to benefit the field of micro air vehicles. Advancements in micro air vehicles can benefit applications such as surveillance, reconnaissance, and search and rescue. In this research, flapping kinematics of a ladybug was explored using a direct linear transformation. A flapping mechanism design is presented that was capable of executing ladybug or other species-specific kinematics. The mechanism was based on a differential gear design, had two wings, and could flap in harsh environments. This mechanism served as a test bed for force analysis and optimization studies. The first study was based on a Box-Behnken screening design to explore wing kinematic parameter design space and manually search in the direction of flapping kinematics that optimized the objective of maximum combined lift and thrust. The second study used a Box-Behnken screening design to build a response surface. Using gradient-based techniques, this surface was optimized for maximum combined lift and thrust. Box-Behnken design coupled with response surface methodology was an efficient method for exploring the mechanism force response. Both methods for optimization were capable of successfully improving lift and thrust force outputs. The incorporation of the results of these studies will aid in the design of more efficient micro air vehicles and with the ultimate goal of leading to a better understanding of flapping wing aerodynamics and the development of aerodynamic models.
Download or read book An Experimental Investigation on the Micro Air Vehicle written by Shih Kang Huang and published by . This book was released on 2014 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental investigation was conducted to study the flow characteristics of the flow around the flapping wings of a four-wing flapper as well as the lift and thrust coefficient of a four-wing flapper. In the present study, a clap-and-fling type of four-wing flapper was designed and manufactured by using several flexible materials, such as PET film, latex, and aluminized Mylar. Different cross-strut patterns and dimensions of wings were manufactured and tested to optimize the wing designs. In addition to taking the lift and thrust measurements using a highly sensitive force moment sensor unit, a high-resolution Particle Image Velocimetry (PIV) system was employed to achieve detailed flow field measurements to quantify the evolution of the unsteady vortex flow structure around the wings and in the downstream of the flapper. The force measurements were analyzed in correlation with the detailed flow measurements to elucidate the underlying physics to improve our understanding for an optimized flexible wing design and to achieve better performance for flapping wing micro air vehicles. A woofer loudspeaker was employed at the test section where the four-wing flapper was placed to generate sound distances. The effect of different frequencies and amplitudes of sound waves on the aerodynamic performance was investigated. A sensitive force moment sensor unit and PIV system were utilized to measure the lift and thrust and to take detailed flow field measurements to quantify the effect of sound waves on the flow and wing deformation. The force measurements were analyzed in correlation with the detailed flow measurements and qualitative wing deformation data to elucidate underlying the physics in to improve our understanding of the effect of acoustic disturbances on flexible wings and the overall aerodynamic performance of MAVs.
Download or read book Topics in the Structural Dynamics and Control of an Articulated Micro Air Vehicle written by Sean James Sidney Regisford and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: This work presents a methodology to determine of accurate computer models of articulated micro air vehicles. Prior to this work, much of the innovation in design of a micro air vehicle was based on empirical data. This emphasis on empirical data necessitates a time intensive iterative process where a design is built and tested, then modifications are made and the process starts anew. This work looks to alleviate some of the load of this iteration by producing accurate models that can be inserted into the process at greatly reduced cost in terms of time. The modeling is accomplished by the application of Lagrange's equations to create a set of equations that incorporate both the rigid and flexible degrees of freedom associated with the materials that Micro Air Vehicles (MAVs) employ. These equations of motion also include the generalized forces that result from the body forces due to gravity and external forces acting as a result of the interaction between the structure and the air through which it passes. These equations are formulated in a manner that accomplishes the above while allowing for the reconfiguration of the system. The equations of motion are then transformed into a form amenable for use in the solution of an optimal control problem.
