ENGLISH

Distinct Aerodynamics of Insect-Scale Flight

By Csaba Hefler

Book information

Publisher
Cambridge University Press
Year
2021
ISBN
1108812716, 9781108812719, 9781108874229
Language
english
Format
PDF
Filesize
5 MB (5241987 bytes)
Series
Elements in Aerospace Engineering
Edition
1
Pages
104\104
Time added
2023-01-10 23:51:35

Description

Insect-scale flapping wing flight vehicles can conduct environmental monitoring, disaster assessment, mapping, positioning and security in complex and challenging surroundings. To develop bio-inspired flight vehicles, systematic probing based on the particular category of flight vehicles is needed. This Element addresses the aerodynamics, aeroelasticity, geometry, stability and dynamics of flexible flapping wings in the insect flight regime. The authors highlight distinct features and issues, contrast aerodynamic stability between rigid and flexible wings, present the implications of the wing-aspect ratio, and use canonical models and dragonflies to elucidate scientific insight as well as technical capabilities of bio-inspired design. Cover Title page Copyright page Distinct Aerodynamics of Insect-Scale Flight Contents 1 Introduction 1.1 Evolution and Variations of Flapping Flight in Nature 1.2 Governing Equations and Dimensionless Parameters of Flapping Flight 1.3 Unsteady Aerodynamic Mechanisms of Flapping Flight 1.4 Micro Air Vehicles 2 Flexible Wing Aeroelasticity 2.1 Non-dimensional Parameters and Scaling to Characterize Flexible Wings 2.2 Optimal Passive Wing Rotation 2.3 Lift Enhancement Due to Wing Streamlining 2.4 Aeroelasticity in Three-Dimensional Flow Fields 2.5 Effects of Aspect Ratio on the Aerodynamic Performance of Flexible Wings 2.6 Summary and Concluding Remarks 3 Stability and Dynamics of Flexible Flapping Wings 3.1 Flight Dynamics of Flapping Flyer with Flexible Wings 3.2 Stability of Hover for Rigid Wings 3.3 Passively Pitching Flexible Flapping Wings in Hover 3.4 Power Required to Hover with Flexible Wings 3.5 Flexible Wings Stabilize the Unstable Mode 3.6 Evolution of Flight from Hover 3.7 Summary and Concluding Remarks 4 Aerodynamic Interactions of Tandem Winged Systems Based on Dragonflies 4.1 Flow Features during Slow Forward Flight and Hovering 4.2 Implications of Wing Flexibility in Facilitating Wing-Wing Interactions 4.3 Wing-Wing Interactions during Free Flight 4.4 Summary and Concluding Remarks 5 Effects of Aspect Ratio on Flapping Wing Aerodynamics 5.1 Tip-Leading-Edge Vortex Dynamics 5.2 Vortex Evolution for Low- and Intermediate-AR Wings 5.3 Summary and Concluding Remarks 6 Perspectives and Future Outlook References

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