Download or read book Aerodynamic Study Design and Construction of a Blended Wing Body BWB Unmanned Aircraft UA written by Aleix De Toro Diaz and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: During this project a Blended Wing Body (BWB) UA (Unmanned Aircraft) model is built. BWBs are a combination of a common airplane with tail control surfaces and a flying wing. BWBs lack tail control surfaces, which makes its design to be very different and more complex regarding stability. To first start the BWB design, some research has been done about the basic parameters of the BWB designs. Moreover, different airfoils are considered to improve the stability of the UA. Two designs are created and simulated with Computational Fluid Dynamics software: ANSYS Fluent. With this software, the basic aerodynamic parameters of the BWB models are obtained, i.e., the lift coefficient, drag coefficient and moment coefficients. A design is shown to be more efficient than the other one. Once the best model is selected, the CAD geometry is cut into different parts in order to allow a 3D printer to print the whole model in pieces. Once all the pieces are printed, the UA is assembled in three main parts (main fuselage, right and left wing) The next step is making the mould. As the 3D printed model has many imperfections, the plastic model should be puttied and sanded several times to achieve a smooth finish. The mould is made with glass fibre. The 3D plastic model is covered with resin and fiberglass. Finally when the mould is finished, Carbon fibre is used to build the UA in the mould. With all the simulations done it has been possible to know where the neutral point is and then locating the center of gravity. It has also been ensured that the UA can be trimmed at a desired angle of attack with any deflection of elevons. Moreover it has been learnt how to work with composite materials as well as organizing a project that involves so many areas. Since the beginning of this work the idea was going focus on more practical stuffs as well as combining it with theoretical knowledge. This has been possible and a composite UA has been built properly.
Download or read book Modeling and Control for a Blended Wing Body Aircraft written by Martin Kozek and published by Springer. This book was released on 2014-10-27 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book demonstrates the potential of the blended wing body (BWB) concept for significant improvement in both fuel efficiency and noise reduction and addresses the considerable challenges raised for control engineers because of characteristics like open-loop instability, large flexible structure, and slow control surfaces. This text describes state-of-the-art and novel modeling and control design approaches for the BWB aircraft under consideration. The expert contributors demonstrate how exceptional robust control performance can be achieved despite such stringent design constraints as guaranteed handling qualities, reduced vibration, and the minimization of the aircraft’s structural loads during maneuvers and caused by turbulence. As a result, this innovative approach allows the building of even lighter aircraft structures, and thus results in considerable efficiency improvements per passenger kilometer. The treatment of this large, complex, parameter-dependent industrial control problem highlights relevant design issues and provides a relevant case study for modeling and control engineers in many adjacent disciplines and applications. Modeling and Control for a Blended Wing Body Aircraft presents research results in numeric modeling and control design for a large, flexible, civil BWB aircraft in the pre-design stage as developed within the EU FP7 research project ACFA 2020. It is a useful resource for aerospace and control engineers as it shows the complete BWB aircraft modeling and control design process, carried out with the most recent tools and techniques available. presents research results in numeric modeling and control design for a large, flexible, civil BWB aircraft in the pre-design stage as developed within the EU FP7 research project ACFA 2020. It is a useful resource for aerospace and control engineers as it shows the complete BWB aircraft modeling and control design process, carried out with the most recent tools and techniques available. Advances in Industrial Control aims to report and encourage the transfer of technology in control engineering. The rapid development of control technology has an impact on all areas of the control discipline. The series offers an opportunity for researchers to present an extended exposition of new work in all aspects of industrial control.
Download or read book Initial Aerodynamic Analysis and Design of a Blended wing body Aircraft written by S.J. Wishart and published by . This book was released on 1998 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Small Unmanned Fixed wing Aircraft Design written by Andrew J. Keane and published by John Wiley & Sons. This book was released on 2017-08-17 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: Small Unmanned Fixed-wing Aircraft Design is the essential guide to designing, building and testing fixed wing UAVs (or drones). It deals with aircraft from two to 150 kg in weight and is based on the first-hand experiences of the world renowned UAV team at the UK’s University of Southampton. The book covers both the practical aspects of designing, manufacturing and flight testing and outlines and the essential calculations needed to underpin successful designs. It describes the entire process of UAV design from requirements definition to configuration layout and sizing, through preliminary design and analysis using simple panel codes and spreadsheets to full CFD and FEA models and on to detailed design with parametric CAD tools. Its focus is on modest cost approaches that draw heavily on the latest digital design and manufacturing methods, including a strong emphasis on utilizing off-the-shelf components, low cost analysis, automated geometry modelling and 3D printing. It deliberately avoids a deep theoretical coverage of aerodynamics or structural mechanics; rather it provides a design team with sufficient insights and guidance to get the essentials undertaken more pragmatically. The book contains many all-colour illustrations of the dozens of aircraft built by the authors and their students over the last ten years giving much detailed information on what works best. It is predominantly aimed at under-graduate and MSc level student design and build projects, but will be of interest to anyone engaged in the practical problems of getting quite complex unmanned aircraft flying. It should also appeal to the more sophisticated aero-modeller and those engaged on research based around fixed wing UAVs.
Download or read book Blended Wing Design Considerations for a Next Generation Commercial Aircraft written by Jay Abhilash Vora and published by . This book was released on 2019 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current aircraft design has not changed significantly in the last few decades. Growing environmental concerns and fuel prices are driving manufacturers to develop unconventional but efficient aircraft configurations. The blended wing body (BWB) configuration provides an alternate and more efficient means of subsonic travel. The BWB aircraft replaces the traditional wings and fuselage with hybrid wing shape where the fuselage and wings have integrated. Major aircraft manufacturers are researching the BWB concept incorporating electric propulsion for civil transport use. In this research a 300 passenger BWB aircraft aerodynamic shape is designed. This aircraft is used to assess the aerodynamic efficiency of the BWB design over a conventional tube aircraft design. The study utilizes Computational Fluid Dynamics (CFD) tools to analyze the fluid flow at different angles of attack for the BWB geometry. A conceptual BWB aircraft was designed using the parameters of a conventional aircraft configuration. During the design, the compatibility of the BWB aircraft with the current airports was also considered. The 3D Computer Aided Design (CAD) software SolidWorks was used to create the BWB design. ANSYS Fluent was used to perform the computational aerodynamic analysis. Aerodynamic flow parameters were investigated to determine the feasibility of a BWB aircraft for commercial flight.
Download or read book Foundations of Circulation Control Based Small Scale Unmanned Aircraft written by Konstantinos Kanistras and published by Springer. This book was released on 2017-11-02 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on using and implementing Circulation Control (CC) - an active flow control method used to produce increased lift over the traditionally used systems, like flaps, slats, etc. - to design a new type of fixed-wing unmanned aircraft that are endowed with improved aerodynamic efficiency, enhanced endurance, increased useful payload (fuel capacity, battery cells, on-board sensors) during cruise flight, delayed stall, and reduced runway during takeoff and landing. It presents the foundations of a step-by-step comprehensive methodology from design to implementation and experimental testing of Coandǎ based Circulation Control Wings (CCWs) and CC system, both integral components of the new type of aircraft, called Unmanned Circulation Control Air Vehicle. The methodology is composed of seven coupled phases: theoretical and mathematical analysis, design, simulation, 3-D printing/prototyping, wind tunnel testing, wing implementation and integration, and flight testing. The theoretical analysis focuses on understanding the physics of the flow and on defining the design parameters of the geometry restrictions of the wing and the plenum. The design phase centers on: designs of Coandǎ surfaces based on wing geometry specifications; designing and modifying airfoils from well-known ones (NACA series, Clark-Y, etc.); plenum designs for flow uniformity; dual radius flap designs to delay flow separation and reduce cruise drag. The simulation phase focuses on Computational Fluid Dynamics (CFD) analysis and simulations, and on calculating lift and drag coefficients of the designed CCWs in a simulation environment. 3-D printing and prototyping focuses on the actual construction of the CCWs. Wind tunnel testing centers on experimental studies in a laboratory environment. One step before flight testing is implementation of the qualified CCW and integration on the UAV platform, along with the CC system. Flight testing is the final phase, where design validation is performed. This book is the first of its kind, and it is suitable for students and researchers interested in the design and development of CCWs for small-scale aircraft. Background knowledge on fundamental Aerodynamics is required.
Download or read book Beyond Tube and Wing written by Bruce I. Larrimer and published by NASA. This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book details the remarkable efforts to develop a new aircraft configuration known as the Blended Wing-Body (BWB). Responding to a challenge from NASA, McDonnell Douglas Corporation initiated studies in the early 1990s to determine if this new configuration could bring about significant advantages over conventional sweptwing, streamlined tube, and swept-tail designs. Research precipitated the design and construction of two small-scale demonstrators: the X-48B. After McDonnell Douglas' merger with Boeing, the X-48B flew 92 test flights before modification into the X-48C, which in turn flew 30 flights under the auspices of NASA's Environmentally Responsible Aviation Program"--
Download or read book Unmanned Aircraft Design written by Mohammad Sadraey and published by Morgan & Claypool Publishers. This book was released on 2017-09-19 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides fundamental principles, design procedures, and design tools for unmanned aerial vehicles (UAVs) with three sections focusing on vehicle design, autopilot design, and ground system design. The design of manned aircraft and the design of UAVs have some similarities and some differences. They include the design process, constraints (e.g., g-load, pressurization), and UAV main components (autopilot, ground station, communication, sensors, and payload). A UAV designer must be aware of the latest UAV developments; current technologies; know lessons learned from past failures; and they should appreciate the breadth of UAV design options. The contribution of unmanned aircraft continues to expand every day and over 20 countries are developing and employing UAVs for both military and scientific purposes. A UAV system is much more than a reusable air vehicle or vehicles. UAVs are air vehicles, they fly like airplanes and operate in an airplane environment. They are designed like air vehicles; they have to meet flight critical air vehicle requirements. A designer needs to know how to integrate complex, multi-disciplinary systems, and to understand the environment, the requirements and the design challenges and this book is an excellent overview of the fundamentals from an engineering perspective. This book is meant to meet the needs of newcomers into the world of UAVs. The materials are intended to provide enough information in each area and illustrate how they all play together to support the design of a complete UAV. Therefore, this book can be used both as a reference for engineers entering the field or as a supplementary text for a UAV design course to provide system-level context for each specialized topic.
Download or read book On the Aerodynamic Analysis of a Modern All Electric Powered Blended Wing Body Aircraft with Bird Strike Resistance Device written by Huang-Lu Zhan and published by . This book was released on 2021 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Blended-wind-body (BWB) is one of the most economical aircraft configuration, and all-electric aircraft will be the future mainstream by reducing pollutions. Bird strikes have always been a major aviation safety problem, so a cone-shaped bird-strike prevention net in front of electric fan inlet is invented. Objectives of this study are the aerodynamic analyses of all-electric powered BWB and bird strike resistance net. After validation of DLR F6 model, same numerical simulation tools then applied to our designated configurations. Major research findings are (1) invention of an all-electric ducted-fan with enough thrust produced for take-off and cruise, (2) detailed investigation of BWB's aerodynamic characteristics during cruise (0.7 Mach and FL280) with power on situation, and (3) estimation of its take-off and landing field lengths. It is found that our bird strike resistance net account for about 19% of total drag, and our findings will be helpful for next generation aircraft design, while future optimization of current electric ducted-fan engine and BWB configuration might still be needed, thus represent more potential growth in its aerodynamic performance.
Download or read book Aerodynamics of Tandem Wing Aircraft written by Illia Kryvokhatko and published by Springer Nature. This book was released on 2023-03-02 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains extensive data about tandem wing aircraft. It includes a review of modern flying vehicles with four fixed wings, a review of analytical, numerical and experimental methods; results of the studies about aerodynamics; dependencies between geometrical parameters and aerodynamic characteristics, practical recommendations in development and optimizing of tandem wing aircraft to provide high lift-to-drag ratio, stability, and controllability. This is an ideal book for graduate students, researchers, and engineers working in fields of aerodynamics and conceptual design of the aircraft especially UAVs, ground-effect vehicles, and convertiplanes.
Download or read book Aerodynamic Design of a Medium Size Blended wing body Airplane written by Tjoetjoek E. Pambagjo and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aerodynamics and Aircraft Design written by Hsue Shen Tsien and published by . This book was released on 1946 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Blended Wing Body Systems Studies written by Karl A. Geiselhart and published by BiblioGov. This book was released on 2013-07 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: A CFD analysis was performed on a Blended Wing Body (BWB) aircraft with advanced, turbofan engines analyzing various inlet configurations atop the aft end of the aircraft. The results are presented showing that the optimal design for best aircraft fuel efficiency would be a configuration with a partially buried engine, short offset diffuser using active flow control, and a D-shaped inlet duct that partially ingests the boundary layer air in flight. The CFD models showed that if active flow control technology can be satisfactorily developed, it might be able to control the inlet flow distortion to the engine fan face and reduce the powerplant performance losses to an acceptable level. The weight and surface area drag benefits of a partially submerged engine shows that it might offset the penalties of ingesting the low energy boundary layer air. The combined airplane performance of such a design might deliver approximately 5.5% better aircraft fuel efficiency over a conventionally designed, pod-mounted engine.
Download or read book Performance of the Blended Wing Body Aircraft Mission and Its Aerodynamic Characteristics written by Steven A. Carlin and published by . This book was released on 2001 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Blended Wing Body Systems Studies written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-27 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: A CFD analysis was performed on a Blended Wing Body (BWB) aircraft with advanced, turbofan engines analyzing various inlet configurations atop the aft end of the aircraft. The results are presented showing that the optimal design for best aircraft fuel efficiency would be a configuration with a partially buried engine, short offset diffuser using active flow control, and a D-shaped inlet duct that partially ingests the boundary layer air in flight. The CFD models showed that if active flow control technology can be satisfactorily developed, it might be able to control the inlet flow distortion to the engine fan face and reduce the powerplant performance losses to an acceptable level. The weight and surface area drag benefits of a partially submerged engine shows that it might offset the penalties of ingesting the low energy boundary layer air. The combined airplane performance of such a design might deliver approximately 5.5% better aircraft fuel efficiency over a conventionally designed, pod-mounted engine.Geiselhart, Karl A. (Technical Monitor) and Daggett, David L. and Kawai, Ron and Friedman, DougLangley Research CenterACTIVE CONTROL; BLENDED-WING-BODY CONFIGURATIONS; COMPUTATIONAL FLUID DYNAMICS; ENGINE INLETS; FLOW DISTRIBUTION; INGESTION (ENGINES); DRAG; INLET FLOW; TURBOFAN ENGINES; ENGINE DESIGN; AIRCRAFT PERFORMANCE; PRESSURE RATIO; EXHAUST EMISSION; CONTAMINANTS; VORTEX GENERATORS...
Download or read book Aerodynamic Performance of a Hybrid Wing Body written by Aaron Young Choi (Graduate student) and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Air travel is one of the major means of transportation today for both passengers and cargo. Since man started taking to the skies, the study of aerodynamics strives to improve aerodynamic performance to increase the range of the air vehicle and reduce operational costs. Many different wing configurations, shapes, and sizes have provided adequate performance to the aircraft, but the fuselage stands aside in adding any improvement for the aircraft’s aerodynamic performance. In the continuous search for a more efficient commercial transport aircraft configuration, we explore the Blended Wing Body (BWB) concept which is also referred to as a blended body or Hybrid Wing Body (HWB) configuration.
Download or read book Evaluation of Blended Wing body Combinations with Curved Plan Forms at Mach Numbers Up to 3 50 written by George H. Holdaway and published by . This book was released on 1960 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
