• Document: Design Optimization Of Drone Propeller
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PROJECT TITLE Design Optimization Of Drone Propeller PROJECT NO: SDPE-AM-G8 SCHOOL OF ENGINEERING 1 COURSE: WSQ SPECIALIST DIPLOMA IN PRECISION ENGINEERING (ADDITIVE MANUFACTURING) PROJECT TITLE: _Design Optimization of Drone Propeller_______________ PROJECT NO: SDPE-AM-G8_______________ PROJECT DURATION: 10 AUG 2016 TO 19 OCT 2016 PROJECT MEMBER(S): NAME ADMIN. NO. ELECTIVE LAI MUN HONG 15C010U EAM506 SIM CHOO HUAT 15C021C EAM506 SUPERVISORS: Mr. SNEHARAJ MALANKAD Proposed by: SEG (M): [√] DATE OF SUBMISSION: 19 OCT 2016 SCHOOL OF ENGINEERING 2 SUMMARY Fig 0.0 showing mini quadcopter / drone Surface model  Solid model  Engineering simulation with surface model  Then Engineering Simulation with solid model  3D print  Design test Fixture  Test and collect data  Compare actual with simulation result. SCHOOL OF ENGINEERING 3 ACKNOWLEDGEMENTS Anna Flessner Engineer, Community Manager at SimScale GmbH Sneharaj Malankad Senior Lecturer, at Nanyang Polytechnic SCHOOL OF ENGINEERING 4 TABLE OF CONTENTS Summary 3 Acknowledgements 4 Chapter 1 Aerodynamic of Drone 6 Chapter 2 Design Consideration for Propeller 7 Chapter 3 Design and CAD Model 8-10 Chapter 4 Mesh & Simulation Setup 11-13 Chapter 5 Simulation Result 14-16 Chapter 6 Test Plan 17-18 Conclusion 19 Appendix 20 Gantt Chart 21 References 22 SCHOOL OF ENGINEERING 5 CHAPTER 1 1.0 AERODYNAMIC OF DRONE Fig 1.0 Model of quadcopter (mini drone). Moment is negated with above propeller spinning arrangement. Propeller need to generate force called lift. Both Newton 3rd law of motion or Bernoulli’s principle can be use to explain how lift is generated. Fig. 1.1 Fig. 1.2 Fig 1.1 Newton 3rd law, the propeller pushes a column of air downwards to create an opposite but equal trust force upwards. Fig 1.2 Bernoulli’s principle. As speed of air increases, pressure is reduced, thus creating a net force (lift) upward. SCHOOL OF ENGINEERING 6 CHAPTER 2 2.0 DESIGN CONSIDERATION FOR PROPELLER The propeller is a spinning wing, Air moves over the surface of the airfoil generating lift. But for a quadcopter, a small motor rotates the airfoil at high speed and the propeller transform the rotory power to upward lift. Unlike an aircraft wings, the propeller is twisted. The tip of the propeller has a higher angular velocity than the hub of the propeller. Therefore, the blade must have a lower angle of attack at the blade than at the tip (ie twist) to produce an even amount of thrust on the blade. Therefore, propeller blades are designed twisted for stability. SCHOOL OF ENGINEERING 7 CHAPTER 3 3 DESIGN AND CAD MODEL Software: Solidworks and OnShape Propeller Design Standard Propeller Propeller 2 (higher angle of attack) Fig. 3.0 on the left shows standard propeller and on the right the re-design higher angle of attack propeller CAD Model 3.0 Surface modelling Standard Propeller Propeller 2 SCHOOL OF ENGINEERING 8 CHAPTER 3 3 DESIGN AND CAD MODEL 3.0 Surface modelling Trio-Peller (Base on propeller 2) Surface modelling is first used for engineering simulation to reduce computing load and also there are lesser surfaces to select for boundary conditions to speed things up. 3.1 Solid Modelling Propeller 2 Propeller 2 (dimples)

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