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Optimizing Small Multi-Rotor Unmanned Aircraft : A Practical Design Guide / by Stephen D. Prior.

By: Prior, Stephen D [author.]Contributor(s): Taylor and FrancisMaterial type: TextTextLanguage: English Publisher: Boca Raton, FL : CRC Press, [2018]Copyright date: ©2019Edition: First editionDescription: 1 online resource (146 pages)Content type: text Media type: computer Carrier type: online resourceISBN: 9780429428364Subject(s): Drone aircraft -- Design and constructionGenre/Form: Electronic books.Additional physical formats: Print version: : No titleDDC classification: 629.133/39 LOC classification:  TL685.35Online resources: Click here to view. Also available in print format.
Contents:
Introduction -- 2 Lithium Polymer battery (power supply) --2.1 Safety considerations --2.2 Lithium Polymer discharge characteristics -- 3 Electronic Speed Controller (ESC) --3.1 Timing --3.2 Cut-off voltage --3.3 Switching frequency -- 4 The Brushless DC (BLDC) motor (outrunner) --4.1 BLDC motor construction and theory --4.2 Equivalent brushed DC motor equations --4.3 Comparing theoretical and empirical data -- 5 The propeller (rotor) --5.1 Propeller or rotor? --5.2 Propeller variables --5.3 Propeller geometry --5.4 Simple momentum theory --5.5 Non-dimensional rotor (propeller) coefficients --5.6 Figure of Merit (FM) --5.7 Propeller efficiency (p) --5.8 Co-axial and overlapping rotor designs --5.9 Reynolds number, Re --5.10 Airfoil geometry --5.11 Airfoil theory Blade Element Theory (BET) --5.12 Online airfoil resources -- 6 The system solution --6.1 IMechE UAS challenge a worked multi-rotor example --6.2 Measuring the propulsive efficiency --6.3 Forward flight --6.4 Dihedral and cant angles --6.5 Active thrust vectoring -- 7 Conclusion --7.1 Economic and societal impact --7.2 Future directions, opportunities and threats -- Appendices--Appendix A1 Li-Po batteries ready reckoner (6S) --Appendix A2 A range of 6S Li-Po batteries with high specific energy (Wh/kg) (June 2018) --Appendix B Guidance on the safe use, handling, storage and disposal of Lithium Polymer batteries --Appendix C T-Motor BLDC motor selection tool --Appendix D Overall system selection spreadsheet --Appendix E Examples of multi-rotor systems built at the ASL --Appendix F Drone radio frequency legal requirements in the UK --Appendix G Example Pixhawk flight controller wiring diagram and mission planner set-up (PID tuning)
Abstract: This design guide was written to capture the author’s practical experience of designing, building and testing multi-rotor drone systems over the past decade. The lack of one single source of useful information meant that the past 10 years has been a steep learning curve, a lot of self-tuition and many trial and error tests. Lessons learnt the hard way are not always the best way to learn. This book will be useful for the amateur drone pilot who wants to build their own system from first principles, as well as the academic researcher investigating novel design concepts and future drone applications.
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Includes bibliographical references and index.

Introduction -- 2 Lithium Polymer battery (power supply) --2.1 Safety considerations --2.2 Lithium Polymer discharge characteristics -- 3 Electronic Speed Controller (ESC) --3.1 Timing --3.2 Cut-off voltage --3.3 Switching frequency -- 4 The Brushless DC (BLDC) motor (outrunner) --4.1 BLDC motor construction and theory --4.2 Equivalent brushed DC motor equations --4.3 Comparing theoretical and empirical data -- 5 The propeller (rotor) --5.1 Propeller or rotor? --5.2 Propeller variables --5.3 Propeller geometry --5.4 Simple momentum theory --5.5 Non-dimensional rotor (propeller) coefficients --5.6 Figure of Merit (FM) --5.7 Propeller efficiency (p) --5.8 Co-axial and overlapping rotor designs --5.9 Reynolds number, Re --5.10 Airfoil geometry --5.11 Airfoil theory Blade Element Theory (BET) --5.12 Online airfoil resources -- 6 The system solution --6.1 IMechE UAS challenge a worked multi-rotor example --6.2 Measuring the propulsive efficiency --6.3 Forward flight --6.4 Dihedral and cant angles --6.5 Active thrust vectoring -- 7 Conclusion --7.1 Economic and societal impact --7.2 Future directions, opportunities and threats -- Appendices--Appendix A1 Li-Po batteries ready reckoner (6S) --Appendix A2 A range of 6S Li-Po batteries with high specific energy (Wh/kg) (June 2018) --Appendix B Guidance on the safe use, handling, storage and disposal of Lithium Polymer batteries --Appendix C T-Motor BLDC motor selection tool --Appendix D Overall system selection spreadsheet --Appendix E Examples of multi-rotor systems built at the ASL --Appendix F Drone radio frequency legal requirements in the UK --Appendix G Example Pixhawk flight controller wiring diagram and mission planner set-up (PID tuning)

This design guide was written to capture the author’s practical experience of designing, building and testing multi-rotor drone systems over the past decade. The lack of one single source of useful information meant that the past 10 years has been a steep learning curve, a lot of self-tuition and many trial and error tests. Lessons learnt the hard way are not always the best way to learn. This book will be useful for the amateur drone pilot who wants to build their own system from first principles, as well as the academic researcher investigating novel design concepts and future drone applications.

Also available in print format.

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