Modeling And Control For A Blended Wing Body Aircraft

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Modeling and Control for a Blended Wing Body Aircraft

Author : Martin Kozek
Publisher : Springer
ISBN 13 : 3319107925
Total Pages : 308 pages
Book Rating : 4.3/5 (191 download)

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Book Synopsis Modeling and Control for a Blended Wing Body Aircraft by : Martin Kozek

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.

Beyond Tube-and-Wing

Author : Bruce Larrimer
Publisher :
ISBN 13 : 9781626830592
Total Pages : pages
Book Rating : 4.8/5 (35 download)

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Book Synopsis Beyond Tube-and-Wing by : Bruce Larrimer

Download or read book Beyond Tube-and-Wing written by Bruce Larrimer and published by . This book was released on 2020-06-15 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Aerodynamic Study, Design and Construction of a Blended Wing Body (BWB) Unmanned Aircraft (UA)

Author : Aleix De Toro Diaz
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (112 download)

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Book Synopsis Aerodynamic Study, Design and Construction of a Blended Wing Body (BWB) Unmanned Aircraft (UA) by : Aleix De Toro Diaz

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.

Flight Dynamics Principles

Author : Michael V. Cook
Publisher : Butterworth-Heinemann
ISBN 13 : 008098276X
Total Pages : 608 pages
Book Rating : 4.0/5 (89 download)

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Book Synopsis Flight Dynamics Principles by : Michael V. Cook

Download or read book Flight Dynamics Principles written by Michael V. Cook and published by Butterworth-Heinemann. This book was released on 2012-10-03 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of flight dynamics requires a thorough understanding of the theory of the stability and control of aircraft, an appreciation of flight control systems and a grounding in the theory of automatic control. Flight Dynamics Principles is a student focused text and provides easy access to all three topics in an integrated modern systems context. Written for those coming to the subject for the first time, the book provides a secure foundation from which to move on to more advanced topics such as, non-linear flight dynamics, flight simulation, handling qualities and advanced flight control. Additional examples to illustrate the application of computational procedures using tools such as MATLAB®, MathCad® and Program CC® Improved compatibility with, and more expansive coverage of the North American notational style Expanded coverage of lateral-directional static stability, manoeuvrability, command augmentation and flight in turbulence An additional coursework study on flight control design for an unmanned air vehicle (UAV)

On the Optimization of Blended Wing Body Aircraft Configuration Via the Surrogate Modeling Method

Author :
Publisher :
ISBN 13 :
Total Pages : 202 pages
Book Rating : 4.:/5 (894 download)

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Book Synopsis On the Optimization of Blended Wing Body Aircraft Configuration Via the Surrogate Modeling Method by :

Download or read book On the Optimization of Blended Wing Body Aircraft Configuration Via the Surrogate Modeling Method written by and published by . This book was released on 2013 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Blended Wing Body Systems Studies

Author : Karl A. Geiselhart
Publisher : BiblioGov
ISBN 13 : 9781289262990
Total Pages : 42 pages
Book Rating : 4.2/5 (629 download)

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Book Synopsis Blended Wing Body Systems Studies by : Karl A. Geiselhart

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.

Aircraft Dynamics and Automatic Control

Author : Duane T. McRuer
Publisher : Princeton University Press
ISBN 13 : 1400855985
Total Pages : 809 pages
Book Rating : 4.4/5 (8 download)

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Book Synopsis Aircraft Dynamics and Automatic Control by : Duane T. McRuer

Download or read book Aircraft Dynamics and Automatic Control written by Duane T. McRuer and published by Princeton University Press. This book was released on 2014-07-14 with total page 809 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aeronautical engineers concerned with the analysis of aircraft dynamics and the synthesis of aircraft flight control systems will find an indispensable tool in this analytical treatment of the subject. Approaching these two fields with the conviction that an understanding of either one can illuminate the other, the authors have summarized selected, interconnected techniques that facilitate a high level of insight into the essence of complex systems problems. These techniques are suitable for establishing nominal system designs, for forecasting off-nominal problems, and for diagnosing the root causes of problems that almost inevitably occur in the design process. A complete and self-contained work, the text discusses the early history of aircraft dynamics and control, mathematical models of linear system elements, feedback system analysis, vehicle equations of motion, longitudinal and lateral dynamics, and elementary longitudinal and lateral feedback control. The discussion concludes with such topics as the system design process, inputs and system performance assessment, and multi-loop flight control systems. Originally published in 1974. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

Blended Wing Body Systems Studies

Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781726218726
Total Pages : 40 pages
Book Rating : 4.2/5 (187 download)

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Book Synopsis Blended Wing Body Systems Studies by : National Aeronautics and Space Administration (NASA)

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...

Propulsion and Flight Controls Integration for the Blended Wing Body Aircraft

Author : Naveed Ur Rahman
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (757 download)

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Book Synopsis Propulsion and Flight Controls Integration for the Blended Wing Body Aircraft by : Naveed Ur Rahman

Download or read book Propulsion and Flight Controls Integration for the Blended Wing Body Aircraft written by Naveed Ur Rahman and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Blended Wing Body (BWB) aircraft offers a number of aerodynamic perfor-mance advantages when compared with conventional configurations. However, whileoperating at low airspeeds with nominal static margins, the controls on the BWBaircraft begin to saturate and the dynamic performance gets sluggish. Augmenta-tion of aerodynamic controls with the propulsion system is therefore considered inthis research. Two aspects were of interest, namely thrust vectoring (TVC) and flapblowing. An aerodynamic model for the BWB aircraft with blown flap effects wasformulated using empirical and vortex lattice methods and then integrated with athree spool Trent 500 turbofan engine model. The objectives were to estimate theeffect of vectored thrust and engine bleed on its performance and to ascertain thecorresponding gains in aerodynamic control effectiveness. To enhance control effectiveness, both internally and external blown flaps were sim-ulated. For a full span internally blown flap (IBF) arrangement using IPC flow, theamount of bleed mass flow and consequently the achievable blowing coefficients arelimited. For IBF, the pitch control effectiveness was shown to increase by 18% at lowairspeeds. The associated detoriation in engine performance due to compressor bleedcould be avoided either by bleeding the compressor at an earlier station along its ax-ial length or matching the engine for permanent bleed extraction. For an externallyblown flap (EBF) arrangement using bypass air, high blowing coefficients are shownto be achieved at 100% Fan RPM. This results in a 44% increase in pitch controlauthority at landing and take-off speeds. The main benefit occurs at take-off, whereboth TVC and flap blowing help in achieving early pitch rotation, reducing take-offfield lengths and lift-off speeds considerably. With central flap blowing and a lim-ited TVC of 10?, the lift-off range reduces by 48% and lift-off velocity by almost 26%. For the lateral-directional axis it was shown that both aileron and rudder controlpowers can be almost doubled at a blowing coefficient of Cu = 0.2. Increased rollauthority greatly helps in achieving better roll response at low speeds, whereas theincreased rudder power helps in maintaining flight path in presence of asymmetricthrust or engine failure, otherwise not possible using the conventional winglet rudder.

Evaluation of Blended Wing-body Combinations with Curved Plan Forms at Mach Numbers Up to 3.50

Author : George H. Holdaway
Publisher :
ISBN 13 :
Total Pages : 70 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Evaluation of Blended Wing-body Combinations with Curved Plan Forms at Mach Numbers Up to 3.50 by : George H. Holdaway

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:

Aircraft Control and Simulation

Author : Brian L. Stevens
Publisher : John Wiley & Sons
ISBN 13 : 1118870972
Total Pages : 768 pages
Book Rating : 4.1/5 (188 download)

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Book Synopsis Aircraft Control and Simulation by : Brian L. Stevens

Download or read book Aircraft Control and Simulation written by Brian L. Stevens and published by John Wiley & Sons. This book was released on 2015-10-02 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt: Get a complete understanding of aircraft control and simulation Aircraft Control and Simulation: Dynamics, Controls Design, and Autonomous Systems, Third Edition is a comprehensive guide to aircraft control and simulation. This updated text covers flight control systems, flight dynamics, aircraft modeling, and flight simulation from both classical design and modern perspectives, as well as two new chapters on the modeling, simulation, and adaptive control of unmanned aerial vehicles. With detailed examples, including relevant MATLAB calculations and FORTRAN codes, this approachable yet detailed reference also provides access to supplementary materials, including chapter problems and an instructor's solution manual. Aircraft control, as a subject area, combines an understanding of aerodynamics with knowledge of the physical systems of an aircraft. The ability to analyze the performance of an aircraft both in the real world and in computer-simulated flight is essential to maintaining proper control and function of the aircraft. Keeping up with the skills necessary to perform this analysis is critical for you to thrive in the aircraft control field. Explore a steadily progressing list of topics, including equations of motion and aerodynamics, classical controls, and more advanced control methods Consider detailed control design examples using computer numerical tools and simulation examples Understand control design methods as they are applied to aircraft nonlinear math models Access updated content about unmanned aircraft (UAVs) Aircraft Control and Simulation: Dynamics, Controls Design, and Autonomous Systems, Third Edition is an essential reference for engineers and designers involved in the development of aircraft and aerospace systems and computer-based flight simulations, as well as upper-level undergraduate and graduate students studying mechanical and aerospace engineering.

Mechanics and Model-Based Control of Advanced Engineering Systems

Author : Alexander K. Belyaev
Publisher : Springer Science & Business Media
ISBN 13 : 370911571X
Total Pages : 317 pages
Book Rating : 4.7/5 (91 download)

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Book Synopsis Mechanics and Model-Based Control of Advanced Engineering Systems by : Alexander K. Belyaev

Download or read book Mechanics and Model-Based Control of Advanced Engineering Systems written by Alexander K. Belyaev and published by Springer Science & Business Media. This book was released on 2013-12-12 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanics and Model-Based Control of Advanced Engineering Systems collects 32 contributions presented at the International Workshop on Advanced Dynamics and Model Based Control of Structures and Machines, which took place in St. Petersburg, Russia in July 2012. The workshop continued a series of international workshops, which started with a Japan-Austria Joint Workshop on Mechanics and Model Based Control of Smart Materials and Structures and a Russia-Austria Joint Workshop on Advanced Dynamics and Model Based Control of Structures and Machines. In the present volume, 10 full-length papers based on presentations from Russia, 9 from Austria, 8 from Japan, 3 from Italy, one from Germany and one from Taiwan are included, which represent the state of the art in the field of mechanics and model based control, with particular emphasis on the application of advanced structures and machines.

Introduction to Aircraft Flight Mechanics

Author : Thomas R. Yechout
Publisher : AIAA
ISBN 13 : 9781600860782
Total Pages : 666 pages
Book Rating : 4.8/5 (67 download)

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Book Synopsis Introduction to Aircraft Flight Mechanics by : Thomas R. Yechout

Download or read book Introduction to Aircraft Flight Mechanics written by Thomas R. Yechout and published by AIAA. This book was released on 2003 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a 15-year successful approach to teaching aircraft flight mechanics at the US Air Force Academy, this text explains the concepts and derivations of equations for aircraft flight mechanics. It covers aircraft performance, static stability, aircraft dynamics stability and feedback control.

Advanced Aircraft Design

Author : Egbert Torenbeek
Publisher : John Wiley & Sons
ISBN 13 : 1118568095
Total Pages : 412 pages
Book Rating : 4.1/5 (185 download)

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Book Synopsis Advanced Aircraft Design by : Egbert Torenbeek

Download or read book Advanced Aircraft Design written by Egbert Torenbeek and published by John Wiley & Sons. This book was released on 2013-05-28 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although the overall appearance of modern airliners has not changed a lot since the introduction of jetliners in the 1950s, their safety, efficiency and environmental friendliness have improved considerably. Main contributors to this have been gas turbine engine technology, advanced materials, computational aerodynamics, advanced structural analysis and on-board systems. Since aircraft design became a highly multidisciplinary activity, the development of multidisciplinary optimization (MDO) has become a popular new discipline. Despite this, the application of MDO during the conceptual design phase is not yet widespread. Advanced Aircraft Design: Conceptual Design, Analysis and Optimization of Subsonic Civil Airplanes presents a quasi-analytical optimization approach based on a concise set of sizing equations. Objectives are aerodynamic efficiency, mission fuel, empty weight and maximum takeoff weight. Independent design variables studied include design cruise altitude, wing area and span and thrust or power loading. Principal features of integrated concepts such as the blended wing and body and highly non-planar wings are also covered. The quasi-analytical approach enables designers to compare the results of high-fidelity MDO optimization with lower-fidelity methods which need far less computational effort. Another advantage to this approach is that it can provide answers to “what if” questions rapidly and with little computational cost. Key features: Presents a new fundamental vision on conceptual airplane design optimization Provides an overview of advanced technologies for propulsion and reducing aerodynamic drag Offers insight into the derivation of design sensitivity information Emphasizes design based on first principles Considers pros and cons of innovative configurations Reconsiders optimum cruise performance at transonic Mach numbers Advanced Aircraft Design: Conceptual Design, Analysis and Optimization of Subsonic Civil Airplanes advances understanding of the initial optimization of civil airplanes and is a must-have reference for aerospace engineering students, applied researchers, aircraft design engineers and analysts.

Design and Analysis of Composite Structures

Author : Christos Kassapoglou
Publisher : John Wiley & Sons
ISBN 13 : 1119957060
Total Pages : 303 pages
Book Rating : 4.1/5 (199 download)

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Book Synopsis Design and Analysis of Composite Structures by : Christos Kassapoglou

Download or read book Design and Analysis of Composite Structures written by Christos Kassapoglou and published by John Wiley & Sons. This book was released on 2011-07-05 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: Design and Analysis of Composite Structures enables graduate students and engineers to generate meaningful and robust designs of complex composite structures. Combining analysis and design methods for structural components, the book begins with simple topics such as skins and stiffeners and progresses through to entire components of fuselages and wings. Starting with basic mathematical derivation followed by simplifications used in real-world design, Design and Analysis of Composite Structures presents the level of accuracy and range of applicability of each method. Examples taken from actual applications are worked out in detail to show how the concepts are applied, solving the same design problem with different methods based on different drivers (e.g. cost or weight) to show how the final configuration changes as the requirements and approach change. Provides a toolkit of analysis and design methods to most situations encountered in practice, as well as analytical frameworks and the means to solving them for tackling less frequent problems. Presents solutions applicable to optimization schemes without having to run finite element models at each iteration, speeding up the design process and allowing examination of several more alternatives than traditional approaches. Includes guidelines showing how decisions based on manufacturing considerations affect weight and how weight optimization may adversely affect the cost. Accompanied by a website at www.wiley.com/go/kassapoglou hosting lecture slides and solutions to the exercises for instructors.

RCadvisor's Model Airplane Design Made Easy

Author : Carlos Reyes
Publisher : www.RCadvisor.com
ISBN 13 : 0982261322
Total Pages : 208 pages
Book Rating : 4.9/5 (822 download)

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Book Synopsis RCadvisor's Model Airplane Design Made Easy by : Carlos Reyes

Download or read book RCadvisor's Model Airplane Design Made Easy written by Carlos Reyes and published by www.RCadvisor.com. This book was released on 2009 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Build and fly your very own model airplane design. Using clear explanations, you will learn about important design trade-offs and how to choose among them. The latest research and techniques are discussed using easy to understand language. You will discover: The special challenges faced by the smaller models and how to overcome them. How to choose the right material for each part of the airplane. Easy rules for selecting the right power system, gas or electric. When it makes sense to use one of the innovative KFm airfoils. Pros and cons of canard and multi-wing configurations. A step-by-step design process that includes goal setting and flight testing. In-depth discussions of important topics like airfoils and wing design. The sources of air drag and how to minimize their impact. ADVANCE PRAISE "This book is a joy to read! The writing style and wit add dimension in a way that is rarely found in today's reference materials. If someone has considered designing their own airplane and been put off because of complicated formulas, vocabulary and reference style that would bore even an engineer, this will convince them to go ahead and try it. Written with real people in mind and not engineers - and I mean that in a good way. This is a book that will reside along the other favorites on my bookshelf. Carlos really managed to produce a book that will last a long time and become one of the standards for modelers." - Greg Gimlick, Electrics columnist, Model Aviation magazine "RCAdvisor's Model Airplane Design Made Easy is the ultimate model airplane design book for both beginning and experienced modelers." - Richard Kline, Inventor, KFm airfoils "RCadvisor's Model Airplane Design Made Easy is a real contribution to the world's literature on the subject. It provides an excellent bridge between full scale aviation and aeromodeling, showing the relationship between the two, for better understanding of the differences and similarities which should be applied for good model performance. While thorough in detail, the book is also easily readable so that the information is simple to understand. It is a very good combination of theory and practical application. Nicely illustrated, the book is also full of common sense explanations and references to other sources of information." - John Worth, former President and Executive Director of the AMA "Carlos Reyes personably leads the reader through some basic aerodynamics, materials considerations, electric power system planning and a practical application of theory as it is applied to a finished flying model. The background history of various types of aircraft shows the development of aviation and how it relates to the models that we build and fly today, as well as how models have influenced general aviation. It is always exciting to find some 'new to me' concepts and theories, and there were several in this well-written narrative." - Ken Myers, Editor, Ampeer electric flight newsletter "No matter how long you've been aeromodelling, or what your interests are in our great hobby, the greatest thrill of all is standing behind a unique model that you've designed and built yourself, from a blank sheet of paper - or even a blank CAD file - and preparing to make that first take off. So sit yourself down in a comfy chair, read RCadvisor's Model Airplane Design Made Easy and set off on aeromodelling's greatest adventure. Let Carlos Reyes - an aeromodeller of long standing and great talent - take you through the mysteries of how to arrive at the point that every lover of model aircraft should experience." - Dereck Woodward, aeromodeller, designer and magazine writer for the past fifty years

On Subscale Flight Testing

Author : Alejandro Sobron
Publisher : Linköping University Electronic Press
ISBN 13 : 9176852202
Total Pages : 130 pages
Book Rating : 4.1/5 (768 download)

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Book Synopsis On Subscale Flight Testing by : Alejandro Sobron

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 130 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.