Preface |
|
xv | |
Acknowledgments |
|
xvii | |
Authors |
|
xix | |
Chapter 1 Introduction to Micro Aerial Vehicles |
|
1 | (48) |
|
|
1 | (3) |
|
1.2 Aspects of Fluid Mechanics and Aerodynamics in the Study of Flyers |
|
|
4 | (14) |
|
1.2.1 Governing Equations of Fluids |
|
|
5 | (2) |
|
1.2.2 Ideal Fluid Potential Flow |
|
|
7 | (1) |
|
1.2.3 Dimensional Analysis |
|
|
8 | (3) |
|
1.2.4 Viscous Flow - Boundary-Layer Theory |
|
|
11 | (1) |
|
|
12 | (1) |
|
1.2.6 Drag and Flight Power |
|
|
13 | (5) |
|
|
13 | (3) |
|
|
16 | (1) |
|
|
16 | (2) |
|
|
18 | (15) |
|
1.3.1 The Dynamic Control of the Flapping Wing MAVs |
|
|
18 | (2) |
|
1.3.2 Equations of Motion for Rigid Aircrafts |
|
|
20 | (1) |
|
1.3.3 Steady-State and Perturbation State |
|
|
21 | (1) |
|
|
22 | (1) |
|
|
23 | (1) |
|
1.3.6 Aerodynamic Forces and Moments |
|
|
24 | (1) |
|
1.3.7 Numerical Example for Longitudinal Modes |
|
|
25 | (3) |
|
1.3.8 Numerical Example for Lateral Modes |
|
|
28 | (3) |
|
1.3.9 Plate-Body Stability |
|
|
31 | (2) |
|
1.4 Scaling Laws of Flapping Wings |
|
|
33 | (4) |
|
1.4.1 Geometry Similarity |
|
|
33 | (1) |
|
1.4.2 Scaling Laws of Bio-natural Flyers |
|
|
33 | (4) |
|
1.5 Lift Mechanisms of Flapping Flight |
|
|
37 | (5) |
|
1.5.1 Dimensionless Parameters of Flapping Wings |
|
|
37 | (1) |
|
1.5.2 Unsteady Lift Mechanisms |
|
|
38 | (2) |
|
1.5.3 Rotational Lift of Flapping Wings |
|
|
40 | (1) |
|
|
41 | (1) |
|
1.5.5 Wing-Wake Interaction |
|
|
41 | (1) |
|
1.6 Stability Issues of a Flapping Wing |
|
|
42 | (5) |
|
1.6.1 C.G. of a Flapping Wing |
|
|
42 | (2) |
|
1.6.2 Preliminary Review on Flight Dynamics Model of a Flapping Wing |
|
|
44 | (1) |
|
1.6.3 Time-Averaging of Inertia for Flapping Wings |
|
|
45 | (1) |
|
1.6.4 New Definition of Stability Derivatives Related to Flapping Frequency |
|
|
45 | (1) |
|
1.6.5 New Control Way Other Than Elevator, Aileron, and Rudder |
|
|
45 | (2) |
|
|
47 | (1) |
|
|
47 | (2) |
Chapter 2 In-Situ Lift Measurement Using PVDF Wing Sensor |
|
49 | (28) |
|
2.1 Lift Measurement Using Wind Tunnel |
|
|
49 | (4) |
|
2.2 Inertial Force Effect on Lift |
|
|
53 | (2) |
|
2.3 Principle of Polyvinylidene Fluoride (PVDF) |
|
|
55 | (2) |
|
2.4 Fabrication of Flapping Wings with PVDF Lift Sensors |
|
|
57 | (4) |
|
2.4.1 Fabrication of Flapping Wing |
|
|
57 | (4) |
|
2.4.2 Introduction of Parylene |
|
|
61 | (1) |
|
2.5 Preliminary Wind Tunnel Test of Titanium-Parylene Wing |
|
|
61 | (3) |
|
2.6 PVDF Sensor in Measuring the Lift Force of Flapping Wings |
|
|
64 | (4) |
|
|
68 | (3) |
|
|
71 | (2) |
|
|
73 | (4) |
Chapter 3 Flapping Wing Mechanism Design |
|
77 | (54) |
|
3.1 Golden-Snitch Ornithopter |
|
|
77 | (8) |
|
3.1.1 Design of the Transmission Module |
|
|
77 | (2) |
|
3.1.2 Aerodynamic Performance of the Golden-Snitch |
|
|
79 | (4) |
|
|
83 | (2) |
|
3.2 Impact of Flapping Stroke Angle on Flapping Aerodynamics |
|
|
85 | (5) |
|
3.3 Aerodynamic Characteristics of Golden-Snitch Pro |
|
|
90 | (10) |
|
3.4 Watt-Stephens Mechanism |
|
|
100 | (5) |
|
|
105 | (18) |
|
|
106 | (1) |
|
|
106 | (1) |
|
3.5.1.2 Force Transmission Angle |
|
|
106 | (1) |
|
3.5.2 Improved Design of Evans Mechanism |
|
|
107 | (4) |
|
3.5.3 Comparison of Stephenson Mechanisms and Evans Mechanism |
|
|
111 | (1) |
|
3.5.4 Measurement of Flapping Frequency |
|
|
112 | (4) |
|
3.5.5 Aerodynamic Performance Measurement of Evans Mechanism |
|
|
116 | (6) |
|
3.5.6 Mass Distribution of FWMAV with Evans Mechanism |
|
|
122 | (1) |
|
3.6 Flight Test of Evans-Based FWMAV |
|
|
123 | (4) |
|
|
127 | (1) |
|
|
128 | (3) |
Chapter 4 Fabrication of Flapping Wing Micro Air Vehicles |
|
131 | (42) |
|
4.1 Electrical Discharging Wire Cutting (EDWC) |
|
|
131 | (6) |
|
4.1.1 Gold-Snitch Four-Bar Linkage (FBL) Mechanism by EDWC |
|
|
132 | (2) |
|
4.1.2 EDWC of Evans Flapping Mechanism |
|
|
134 | (3) |
|
|
137 | (17) |
|
4.2.1 PIM of FBL Mechanism for Golden-Snitch |
|
|
137 | (4) |
|
4.2.2 Development of Golden-Snitch Outer Body Using PIM |
|
|
141 | (5) |
|
4.2.3 PIM of Evans Flapping Mechanism |
|
|
146 | (8) |
|
4.3 Additive Manufacturing (3D Printing) |
|
|
154 | (6) |
|
4.3.1 Fused Deposition Modeling (FDM) |
|
|
154 | (2) |
|
4.3.2 Parylene Coating as a Solid Lubricant |
|
|
156 | (2) |
|
|
158 | (1) |
|
|
158 | (1) |
|
|
159 | (1) |
|
4.4 Performance Comparison of Flapping Mechanisms by Different Manufactures |
|
|
160 | (8) |
|
4.4.1 Torque of Evans Mechanism by PIM |
|
|
160 | (1) |
|
4.4.2 3D Printing Evans Mechanism's Performance Evaluation |
|
|
161 | (7) |
|
|
168 | (1) |
|
|
168 | (5) |
Chapter 5 Flapping Wing Design |
|
173 | (46) |
|
5.1 Strengthening of Leading-Edge in Flapping Wings |
|
|
173 | (6) |
|
5.1.1 Aerodynamic Enhancement of the Leading-Edge Tape on Flapping Wings |
|
|
173 | (3) |
|
5.1.2 Effect of Leading-Edge Tape on Power Consumption |
|
|
176 | (3) |
|
5.2 Carbon-Fiber Rib Effect on the Flapping Wings |
|
|
179 | (5) |
|
5.3 Effect of Materials and Stiffness on the Flapping Wings |
|
|
184 | (9) |
|
5.3.1 Aerodynamic Performance of Various Wing Membranes |
|
|
185 | (2) |
|
5.3.2 Power Consumption in Various Wing Membranes |
|
|
187 | (6) |
|
5.4 Bionic Flapping Wings with Check Valves |
|
|
193 | (9) |
|
5.4.1 Working Principle of Flapping Wings with Check Valves |
|
|
193 | (1) |
|
5.4.2 Design of the Flapping Wings with Check Valves |
|
|
194 | (2) |
|
5.4.3 Wind Tunnel Testing of a Flapping Wing with Check Valves |
|
|
196 | (6) |
|
5.5 Bionic Corrugated Flapping Wings |
|
|
202 | (11) |
|
5.5.1 Dragonfly Wing and Corrugations |
|
|
203 | (1) |
|
5.5.2 Thickness Effect for Corrugated Wing |
|
|
203 | (1) |
|
5.5.3 Design and Fabrication of a Corrugated Wing |
|
|
204 | (4) |
|
5.5.4 Aerodynamic Performance Evaluation of a Corrugated Wing |
|
|
208 | (1) |
|
5.5.5 Performance Evaluation at Cruising |
|
|
208 | (5) |
|
5.6 Wing Stiffness of Different Flapping Wings |
|
|
213 | (2) |
|
|
215 | (1) |
|
|
215 | (4) |
Chapter 6 Clap-and-Fling Flapping |
|
219 | (20) |
|
|
219 | (1) |
|
6.2 Mechanism Design for Clap-and-Fling Motion |
|
|
220 | (5) |
|
6.2.1 CF-50 Mechanism Design with 50° Stroke Angle |
|
|
220 | (1) |
|
6.2.2 CF-51 and CF-72 Mechanism Design |
|
|
221 | (4) |
|
6.3 High-Speed Photography Test (Zero Wind Speed) |
|
|
225 | (2) |
|
|
225 | (1) |
|
|
226 | (1) |
|
|
226 | (1) |
|
|
227 | (5) |
|
|
227 | (2) |
|
|
229 | (1) |
|
|
230 | (2) |
|
6.5 Aerodynamic Performance Comparison |
|
|
232 | (3) |
|
|
235 | (1) |
|
|
236 | (3) |
Chapter 7 Computational Fluid Dynamics Analysis of Flapping Wings |
|
239 | (28) |
|
|
239 | (1) |
|
7.2 Numerical Simulation of Single Flapping Wing |
|
|
239 | (14) |
|
7.2.1 Governing Equations |
|
|
240 | (1) |
|
7.2.2 Boundary Conditions |
|
|
241 | (1) |
|
7.2.3 Mesh Setting and Testing |
|
|
242 | (2) |
|
7.2.4 Flow Pattern Comparison for Single Flapping Wing |
|
|
244 | (2) |
|
7.2.5 Aerodynamic Force Comparison for Single Flapping Wing |
|
|
246 | (2) |
|
7.2.6 Comparison of 3D Trajectory Using Stereo-Photography for Single Flapping Wing |
|
|
248 | (4) |
|
7.2.7 Major Observations from CFD Analysis of Single Flapping Wing |
|
|
252 | (1) |
|
7.3 Formation Flight of Flapping Wings |
|
|
253 | (1) |
|
7.4 CFD Analysis of Formation Flight of FWMAVs |
|
|
254 | (2) |
|
|
254 | (1) |
|
7.4.2 CFD Analysis for Single Flapping Wing |
|
|
255 | (1) |
|
7.4.3 CFD Analysis for V-Formation with |
|
|
|
|
256 | (5) |
|
7.4.4 Comparison of Averaged Lift Per Wing for V-Formation and Single Wing |
|
|
256 | (1) |
|
7.4.5 Lift Comparison for Leading Wing of V-Formation and Single Wing |
|
|
257 | (1) |
|
7.4.6 Lift Comparison for Leading Wing and Follower Wing of V-Formation |
|
|
258 | (1) |
|
7.4.7 Comparison of Dimensionless Lift Coefficients |
|
|
258 | (3) |
|
7.5 Summary on the V-Formation Flapping Flight |
|
|
261 | (2) |
|
|
263 | (1) |
|
|
263 | (4) |
Chapter 8 Soap Film Flow Visualization of Flapping Wing Motion |
|
267 | (16) |
|
|
267 | (1) |
|
|
268 | (4) |
|
|
268 | (1) |
|
8.2.2 Differential Approach about a Soap-Film |
|
|
269 | (1) |
|
8.2.3 Integral Approach about a Soap-Film Using Stokes Theorem |
|
|
269 | (1) |
|
8.2.4 The Integral Approach of a Soap-Film Using Gauss Theorem |
|
|
270 | (1) |
|
8.2.5 Soap-Film Thickness Interpreted to 3D Downwash of a Wing |
|
|
270 | (2) |
|
8.3 Soap-Film Imaging Experiment of a 10 cm-Span Flapping Wing |
|
|
272 | (7) |
|
8.3.1 10 cm-Span Flapping Wing |
|
|
272 | (2) |
|
|
274 | (1) |
|
8.3.3 High-Speed Photography for Capturing Soap-Film of a Flapping Wing Motion |
|
|
275 | (1) |
|
8.3.4 RGB-Thickness Field Conversion |
|
|
275 | (2) |
|
8.3.5 Calculation of 3D Downwash, Lift, and Induced Drag of a Flapping Wing |
|
|
277 | (2) |
|
|
279 | (1) |
|
|
280 | (3) |
Chapter 9 Dynamics and Image-Based Control of Flapping Wing Micro Aerial Vehicles |
|
283 | (28) |
|
9.1 Introduction to Stereovision System |
|
|
283 | (2) |
|
9.2 Simplified Dynamic Model |
|
|
285 | (7) |
|
9.2.1 Equations of Motion |
|
|
285 | (1) |
|
9.2.2 Averaging Theory and Formulation of Forces |
|
|
286 | (6) |
|
9.2.2.1 Applicability of Averaging Theory |
|
|
286 | (3) |
|
9.2.2.2 Formulation of Forces and Moments |
|
|
289 | (1) |
|
9.2.2.3 Coefficients of the Main Wing |
|
|
290 | (1) |
|
9.2.2.4 Coefficients of the Horizontal Wing |
|
|
291 | (1) |
|
|
292 | (2) |
|
9.3.1 Linearized Dynamics |
|
|
292 | (2) |
|
9.3.2 Formulation of the Transfer Function |
|
|
294 | (1) |
|
9.4 Numerical Simulations |
|
|
294 | (2) |
|
9.5 Experiments and Discussion |
|
|
296 | (3) |
|
|
299 | (3) |
|
9.7 Experimental Studies Using Developed Image Processing Algorithms |
|
|
302 | (1) |
|
9.8 Development of Graphical User Interface |
|
|
303 | (1) |
|
|
303 | (1) |
|
|
304 | (1) |
|
9.8.3 Vision-Based Control Mode |
|
|
304 | (1) |
|
9.9 Vision System for FWMAV |
|
|
304 | (2) |
|
9.10 Motion Estimation Using Frequency Domain Approach |
|
|
306 | (1) |
|
9.11 Group Actuation and Control |
|
|
307 | (2) |
|
|
309 | (1) |
|
|
309 | (2) |
Chapter 10 Arduino-Based Flight Control of Ornithopters |
|
311 | (26) |
|
10.1 Estimation of Attitude, Altitude, and Direction of FWMAV |
|
|
311 | (2) |
|
10.2 Directional Control of FWMAV with Microcontroller and On-Board Avionics |
|
|
313 | (4) |
|
|
317 | (4) |
|
10.3.1 Altitude Measurement |
|
|
318 | (1) |
|
10.3.2 Measurement of Flight Data |
|
|
318 | (3) |
|
10.4 Design of Printed Circuit Board |
|
|
321 | (5) |
|
10.4.1 Uploading Firmware |
|
|
324 | (1) |
|
|
324 | (2) |
|
|
326 | (2) |
|
10.6 Bionic Actuators for FWMAVs |
|
|
328 | (6) |
|
10.6.1 Working Principle of Bionic Actuators |
|
|
329 | (1) |
|
10.6.2 Design of Bionic Actuator |
|
|
329 | (2) |
|
10.6.3 Fabrication and Testing |
|
|
331 | (3) |
|
|
334 | (1) |
|
|
334 | (3) |
Chapter 11 Servo Driven Flapping Wing Vehicles |
|
337 | (22) |
|
11.1 Introduction of Servomotors |
|
|
337 | (2) |
|
11.2 Design of Servo Mount |
|
|
339 | (2) |
|
11.3 Flight Control of Servo-Driven Flapping Wings |
|
|
341 | (3) |
|
|
344 | (4) |
|
11.5 Attitude Control of Servo-Driven Ornithopter |
|
|
348 | (2) |
|
11.6 Experimental Analysis |
|
|
350 | (4) |
|
11.7 Design of Long Wingspan Servo-Driven Ornithopter |
|
|
354 | (1) |
|
11.8 Lightweight Batteries for FWMAVs |
|
|
355 | (2) |
|
|
357 | (1) |
|
|
357 | (2) |
Chapter 12 Figure-of-Eight Motion and Flapping Wing Rotation |
|
359 | (42) |
|
|
359 | (1) |
|
12.2 Passive Wing Rotation of Flapping |
|
|
359 | (11) |
|
12.2.1 Review on Tamkang's Golden-Snitch |
|
|
359 | (3) |
|
12.2.2 Joint Wearing of Flapping Mechanism |
|
|
362 | (3) |
|
12.2.3 Oblique Figure-of-8 Flapping Characteristics of Golden-Snitch |
|
|
365 | (2) |
|
12.2.4 Symmetry Breaking of Flapping Dynamics |
|
|
367 | (3) |
|
12.3 Active Wing Rotation of Flapping |
|
|
370 | (24) |
|
12.3.1 Lift-Generation Principle for Wing Rotation of Flapping |
|
|
370 | (2) |
|
12.3.2 Flapping Mechanisms with Wing Rotation |
|
|
372 | (1) |
|
12.3.3 Type A: All Servo Mechanism |
|
|
372 | (1) |
|
12.3.4 Type A1: Normal Servo Mechanism |
|
|
372 | (6) |
|
12.3.5 Type B: Servo-Bevel Gear Hybrid Mechanism |
|
|
378 | (5) |
|
12.3.6 Type B1: Hybrid Servo-Bevel Gear Mechanism with Stoppers |
|
|
383 | (3) |
|
12.3.7 FBL-Bevel Gear Hybrid Mechanism |
|
|
386 | (8) |
|
|
394 | (1) |
|
12.4 Power Consumption of Flapping-Wing Flight |
|
|
394 | (3) |
|
12.5 Summary and Final Conclusion |
|
|
397 | (2) |
|
|
399 | (2) |
Index |
|
401 | |