Download or read book Development of Micro Air Vehicle Technology with In Flight Adaptive Wing Structure written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-05-29 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a final report on the research studies, "Development of Micro Air Vehicle Technology with In-Flight Adaptrive-Wing Structure". This project involved the development of variable-camber technology to achieve efficient design of micro air vehicles. Specifically, it focused on the following topics: 1) Low Reynolds number wind tunnel testing of cambered-plate wings. 2) Theoretical performance analysis of micro air vehicles. 3) Design of a variable-camber MAV actuated by micro servos. 4) Test flights of a variable-camber MAV.Waszak, Martin R. (Technical Monitor) and Shkarayev, Sergey and Null, William and Wagner, MatthewLangley Research CenterADAPTATION; AERODYNAMICS; TECHNOLOGY ASSESSMENT; LOW REYNOLDS NUMBER; RELIABILITY ANALYSIS; CAMBERED WINGS; WIND TUNNEL TESTS; SERVOMOTORS; FLIGHT TESTS

Download or read book Development of Micro Air Vehicle Technology with In Flight Adaptive Wing Structure written by Martin R. Waszak and published by BiblioGov. This book was released on 2013-07 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a final report on the research studies, "Development of Micro Air Vehicle Technology with In-Flight Adaptrive-Wing Structure." This project involved the development of variable-camber technology to achieve efficient design of micro air vehicles. Specifically, it focused on the following topics: 1) Low Reynolds number wind tunnel testing of cambered-plate wings. 2) Theoretical performance analysis of micro air vehicles. 3) Design of a variable-camber MAV actuated by micro servos. 4) Test flights of a variable-camber MAV.

Download or read book Fixed and Flapping Wing Aerodynamics for Micro Air Vehicle Applications written by Thomas J. Mueller and published by AIAA. This book was released on 2001 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt: This title reports on the latest research in the area of aerodynamic efficency of various fixed-wing, flapping wing, and rotary wing concepts. It presents the progress made by over fifty active researchers in the field.

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.

Download or read book Morphing Aerospace Vehicles and Structures written by John Valasek and published by John Wiley & Sons. This book was released on 2012-02-24 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: Morphing Aerospace Vehicles and Structures provides a highly timely presentation of the state-of-the-art, future directions and technical requirements of morphing aircraft. Divided into three sections it addresses morphing aircraft, bio-inspiration, and smart structures with specific focus on the flight control, aerodynamics, bio-mechanics, materials, and structures of these vehicles as well as power requirements and the use of advanced piezo materials and smart actuators. The tutorial approach adopted by the contributors, including underlying concepts and mathematical formulations, unifies the methodologies and tools required to provide practicing engineers and applied researchers with the insight to synthesize morphing air vehicles and morphing structures, as well as offering direction for future research.

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.

Download or read book Distributed Modeling and Control of Adaptive Wings written by and published by . This book was released on 2003 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: New generations of highly-maneuverable aircraft, such as Uninhabited Combat Air Vehicles (UCAV) or Micro Air Vehicles (MAV), are likely to feature very flexible lifting surfaces. In order to enhance their stealth properties and maneuverability, the possibility of using smart wings and morphing airfoils instead of conventional, hinged control surfaces is investigated. This task requires a fundamental understanding of the interaction between fluid, structure and control system, in a coded form that is fast enough to design with. This DARPA-funded project takes a fundamental approach to understanding the relevant physical phenomena using different models of a flying wing vehicle in flight. We have developed a model that is consistent with distributed control, and have exercised this model to determine what progress is possible in terms of flight control (lift, drag, and maneuver performance) with morphing wings. For this purpose, different modeling levels are examined and combined with a variety of distributed control approaches to determine exactly what types of maneuvers and flight regimes may be possible, and to determine the forces, moments, and deflections that would be needed from the actuation community in order to fly an aircraft completely without the use of discrete control surfaces. This year's progress has been to bring together several elements (aerodynamics, flight dynamics, shape generation, and control) to determine bounds on the required forces, moments and strokes for flying by morphing.

Download or read book Death by a Thousand Cuts written by Arthur F. Huber and published by DIANE Publishing. This book was released on 2002 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technological progress in a number of areas to include aerodynamics, micro- electronics, sensors, micro-electromechanical systems (MEMS), micro-manufacturing, and more, is ushering in the possibility for the affordable development and acquisition of a new class of military systems known as micro-air vehicles (MAV) MAVs are a subset of uninhabited air vehicles (UAV) that are up two orders of magnitude smaller than the manned systems that permeate our contemporary life, Recent advances in miniaturization may make possible vehicles that can carry out important military missions that heretofore were beyond our reach or could only be attained at great risk or resource expenditure. These missions will be possible if MAVs can fulfill their potential to attain certain attributes to include: low cost, low weight, little to no logistical "footprint," mission versatility, range, endurance, stealth, and precision. A review of the literature in this area indicates that the military potential of this emerging field remains on the "technological push" side of the equation with little to no "requirements pull" from the user community. Accordingly, concepts of operations deriving from the war fighting community - particularly the United States Air Force (USAF) - are sparse. At a higher level, the potential of micro-air vehicles opens up new possibilities in the formulation of military strategies that require investigation. This paper provides an outline of the contemporary technological dimension of MAVs and contemplates how they might be used to enhance Air Force operations.

Download or read book Twelfth International Conference on Adaptive Structures and Technologies written by Norman Wereley and published by CRC Press. This book was released on 2017-11-22 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: First Published in 2017. Routledge is an imprint of Taylor & Francis, an Informa company.

Download or read book Fabrication of Flapping Wing Micro Air Vehicle Using Rapid Prototyping Technology written by Rajashekar Patil and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of this paper is to introduce one of the promising Rapid Prototyping (RP) technology as a potential application for the fabrication and development of a Flapping Wing Micro Air Vehicle (a rubber band powered Ornithopter). The conventionally constructed Ornithopter of Balsa Wood has been compared with an Ornithopter of ABS-M30 constructed using RP technology (Fused Deposition Modeling). An assessment of their flight time, cost and time involved in the construction, demonstrated the significance of RP technology in the development of MAVs. Further, it is concluded that RP technology can be a right choice to make aerodynamic body parts or airframe structures either hollow or porous which in turn would help in weight reduction with enhanced strength and further with improved flight characteristics.

Download or read book Twelfth International Conference on Adaptive Structures and Technologies written by Norman Wereley and published by CRC Press. This book was released on 2017-11-22 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: First Published in 2017. Routledge is an imprint of Taylor & Francis, an Informa company.

Download or read book Design and Development of a Micro Air Vehicle MAV written by SeWoong Jung and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: This thesis presents the design, fabrication, capabilities, and analysis of a test-bed Micro Air Vehicle (MAV) used in developing a vision-based flight control algorithm. Vision-based controlled flight and its further developments are geared towards use on MAVs of the future. A test-bed airplane was designed from MAV concepts, and was large enough to accommodate the current commercial components available on the market. Two generations of the vision-based MAV were developed and tested. Each generation had 0.6 m wingspan and used a pusher configuration with a flexible wing concept. The second generation, however, had an improved fuselage and wing design, drive system, and a unique morphing mechanism. Both vehicles were tested and compared during numerous flight and wind tunnel tests. Effects of the morphing mechanism on the flexible wing were analyzed in the wind tunnel using the digital image correlation method.

Download or read book Unmanned Aviation written by Laurence R. Newcome and published by AIAA. This book was released on 2004 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Newcome traces the family tree of unmanned aircraft all the way back to their roots as aerial torpedoes, which were the equivalent of todays cruise missiles. He discusses the work of leading aerospace pioneers whose efforts in the area of unmanned aviation have largely been ignored by history.

Download or read book On Subscale Flight Testing written by Alejandro Sobron and published by Linköping University Electronic Press. This book was released on 2018-11-05 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Downscaled physical models, also referred to as subscale models, have played an essential role in the investigation of the complex physics of flight until the recent disruption of numerical simulation. Despite the fact that improvements in computational methods are slowly pushing experimental techniques towards a secondary role as verification or calibration tools, real-world testing of physical prototypes still provides an unmatched confidence. Physical models are very effective at revealing issues that are sometimes not correctly identified in the virtual domain, and hence can be a valuable complement to other design tools. But traditional wind-tunnel testing cannot always meet all of the requirements of modern aeronautical research and development. It is nowadays too expensive to use these scarce facilities to explore different design iterations during the initial stages of aircraft development, or to experiment with new and immature technologies. Testing of free-flight subscale models, referred to as Subscale Flight Testing (SFT), could offer an affordable and low-risk alternative for complementing conventional techniques with both qualitative and quantitative information. The miniaturisation of mechatronic systems, the advances in rapid-prototyping techniques and power storage, as well as new manufacturing methods, currently enable the development of sophisticated test objects at scales that were impractical some decades ago. Moreover, the recent boom in the commercial drone industry has driven a quick development of specialised electronics and sensors, which offer nowadays surprising capabilities at competitive prices. These recent technological disruptions have significantly altered the cost-benefit function of SFT and it is necessary to re-evaluate its potential in the contemporary aircraft development context. This thesis aims to increase the comprehension and knowledge of the SFT method in order to define a practical framework for its use in aircraft design; focusing on low-cost, short-time solutions that don’t require more than a small organization and few resources. This objective is approached from a theoretical point of view by means of an analysis of the physical and practical limitations of the scaling laws; and from an empirical point of view by means of field experiments aimed at identifying practical needs for equipment, methods, and tools. A low-cost data acquisition system is developed and tested; a novel method for semi-automated flight testing in small airspaces is proposed; a set of tools for analysis and visualisation of flight data is presented; and it is also demonstrated that it is possible to explore and demonstrate new technology using SFT with a very limited amount of economic and human resources. All these, together with a theoretical review and contextualisation, contribute to increasing the comprehension and knowledge of the SFT method in general, and its potential applications in aircraft conceptual design in particular.

Download or read book Development of a Tandem wing Flapping Micro Aerial Vehicle Prototype and Experimental Mechanism written by Christopher DiLeo and published by ProQuest. This book was released on 2007 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the field of micro-aerial vehicles (MAVs), simplicity of design is an important design characteristic. Simplicity in this context implies light weight, a prerequisite for flapping flight, and from a practical standpoint it aids in the manufacture and operation of the mechanism on such a small scale. However, simplicity comes at a price: as mechanisms are simplified they have fewer degrees of freedom, lower controllability, less power output. All of these will effect the ability of the mechanism to generate lift, but the losses can be minimized through proper design and implementation. This thesis describes the design and fabrication of a flapping-wing MAV deriving inspiration from the biological mechanisms of a dragonfly. Dragonflies flap with an inclined stroke plane for hovering flight, which in conjunction with their two pairs of wings, presents an unexplored area of research for MAVs. Small changes in the hovering-flight wing kinematics create large simplifications in their mechanical reproduction. The MAV utilizes these simplifications while maintaining the most important characteristics of dragonfly hovering flight, including passive rotation of the wings, reliance on drag forces to generate lift, and the fluid interactions between adjacent wings flapping out-of-phase. Two successive prototypes are presented, focusing on component design and fabrication techniques. These prototypes allow for easy modification of kinematic variables (phase shift between the fore-and hind-wings and factors that affect wing angle-of-attack) and component variables (most importantly, wing characteristics: size, shape, flexibility), important for future optimization. Initial experimental validation of the prototypes is presented. To facilitate the experimental validation, a mechanical flapping wing mechanism has been designed and fabricated which is able to reproduce the high-stroke-plane kinematics utilized by dragonflies, an ability lacking in present flapping mechanisms. This flapping wing mechanism allows for the measurement of the instantaneous forces on a wing for a particular kinematics, by driving the wing with dynamically similar kinematics in a tank of oil. These experiments will be used in the future to analyze and optimize the lift generated by flapping-wing MAVs.

Download or read book Study of Micro Sized Technology Micro Air Vehicles and Design of a Payload Carrying Flapping Wing Micro Air Vehicle written by and published by . This book was released on 2006 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: There has been recent interest by the military to have platforms capable of operating close to a point of interest without being detected while providing critical surveillance. By providing information that is not readily available, these platforms could provide a useful tool for small unit commanders in potentially life-threatening situations. Highly maneuverable, slow-flying micro air vehicles could fly under canopies, through alleys, or indoors to provide such intelligence. This study consists of a survey of current micro-sized technologies and commercially available components. The findings are presented and used in the design process of a larger payload-carrying variant of the NPS flapping wing micro air vehicle. The intent is to develop a readily deployable, backpackable, slow-flying micro air vehicle that can be used by smaller-size ground units in theatre for urban reconnaissance.

Download or read book Computational Modeling for Fluid Flow and Interfacial Transport written by Wei Shyy and published by Courier Corporation. This book was released on 2014-06-10 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: Practical applications and examples highlight this treatment of computational modeling for handling complex flowfields. A reference for researchers and graduate students of many different backgrounds, it also functions as a text for learning essential computation elements. Drawing upon his own research, the author addresses both macroscopic and microscopic features. He begins his three-part treatment with a survey of the basic concepts of finite difference schemes for solving parabolic, elliptic, and hyperbolic partial differential equations. The second part concerns issues related to computational modeling for fluid flow and transport phenomena. In addition to a focus on pressure-based methods, this section also discusses practical engineering applications. The third and final part explores the transport processes involving interfacial dynamics, particularly those influenced by phase change, gravity, and capillarity. Case studies, employing previously discussed methods, demonstrate the interplay between the fluid and thermal transport at macroscopic scales and their interaction with the interfacial transport.