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Experimental Characterization, Design, Analysis and Optimization of Flexible Flapping Wings for Micro Air Vehicles

Permanent Link: http://ufdc.ufl.edu/UFE0041978/00001

Material Information

Title: Experimental Characterization, Design, Analysis and Optimization of Flexible Flapping Wings for Micro Air Vehicles
Physical Description: 1 online resource (305 p.)
Language: english
Creator: Wu, Pin
Publisher: University of Florida
Place of Publication: Gainesville, Fla.
Publication Date: 2010

Subjects

Subjects / Keywords: adaptive, aeroelasticity, air, airflow, analysis, bioinspiration, correlation, deformation, dic, digital, experimental, flapping, flexible, flight, hummingbird, image, insect, mav, mechanism, micro, modal, nav, optical, passive, propulsion, vehicle, wing
Mechanical and Aerospace Engineering -- Dissertations, Academic -- UF
Genre: Mechanical Engineering thesis, Ph.D.
bibliography   ( marcgt )
theses   ( marcgt )
government publication (state, provincial, terriorial, dependent)   ( marcgt )
born-digital   ( sobekcm )
Electronic Thesis or Dissertation

Notes

Abstract: This work has advanced the understanding of flapping flight of flexible wings designed to be used in micro air vehicles. A complete new experimental setup that includes a wing actuation mechanism, a customized digital image correlation system, a control system, a load sensor and a vacuum chamber is realized for this study. The technique of digital image correlation has also been developed so that complicated wing kinematics and deformation can be measured. The flapping wing effectiveness and efficiency have been evaluated in different conditions. The results indicate that passive wing deformation can be utilized to enhance aerodynamic performance, under certain inertial loading mainly dictated by flapping frequency, amplitude, wing compliance and mass distribution. The wing deformation reflects the aeroelastic effect produced by the coupled aerodynamic loading as well as the inertial loading. Critical parameters extracted from the deformation data are used to characterize the structural properties of the wings and correlate with the aerodynamic performance. The correlation shows that for one-degree-of-freedom kinematics, wing deformation can be directly used to predict time averaged thrust. The intrinsic relationship between kinematics and inertial loading enables the design and optimization of wing structure based on the correlation results.
General Note: In the series University of Florida Digital Collections.
General Note: Includes vita.
Bibliography: Includes bibliographical references.
Source of Description: Description based on online resource; title from PDF title page.
Source of Description: This bibliographic record is available under the Creative Commons CC0 public domain dedication. The University of Florida Libraries, as creator of this bibliographic record, has waived all rights to it worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law.
Statement of Responsibility: by Pin Wu.
Thesis: Thesis (Ph.D.)--University of Florida, 2010.
Local: Adviser: Ifju, Peter.
Electronic Access: RESTRICTED TO UF STUDENTS, STAFF, FACULTY, AND ON-CAMPUS USE UNTIL 2011-02-28

Record Information

Source Institution: UFRGP
Rights Management: Applicable rights reserved.
Classification: lcc - LD1780 2010
System ID: UFE0041978:00001

Permanent Link: http://ufdc.ufl.edu/UFE0041978/00001

Material Information

Title: Experimental Characterization, Design, Analysis and Optimization of Flexible Flapping Wings for Micro Air Vehicles
Physical Description: 1 online resource (305 p.)
Language: english
Creator: Wu, Pin
Publisher: University of Florida
Place of Publication: Gainesville, Fla.
Publication Date: 2010

Subjects

Subjects / Keywords: adaptive, aeroelasticity, air, airflow, analysis, bioinspiration, correlation, deformation, dic, digital, experimental, flapping, flexible, flight, hummingbird, image, insect, mav, mechanism, micro, modal, nav, optical, passive, propulsion, vehicle, wing
Mechanical and Aerospace Engineering -- Dissertations, Academic -- UF
Genre: Mechanical Engineering thesis, Ph.D.
bibliography   ( marcgt )
theses   ( marcgt )
government publication (state, provincial, terriorial, dependent)   ( marcgt )
born-digital   ( sobekcm )
Electronic Thesis or Dissertation

Notes

Abstract: This work has advanced the understanding of flapping flight of flexible wings designed to be used in micro air vehicles. A complete new experimental setup that includes a wing actuation mechanism, a customized digital image correlation system, a control system, a load sensor and a vacuum chamber is realized for this study. The technique of digital image correlation has also been developed so that complicated wing kinematics and deformation can be measured. The flapping wing effectiveness and efficiency have been evaluated in different conditions. The results indicate that passive wing deformation can be utilized to enhance aerodynamic performance, under certain inertial loading mainly dictated by flapping frequency, amplitude, wing compliance and mass distribution. The wing deformation reflects the aeroelastic effect produced by the coupled aerodynamic loading as well as the inertial loading. Critical parameters extracted from the deformation data are used to characterize the structural properties of the wings and correlate with the aerodynamic performance. The correlation shows that for one-degree-of-freedom kinematics, wing deformation can be directly used to predict time averaged thrust. The intrinsic relationship between kinematics and inertial loading enables the design and optimization of wing structure based on the correlation results.
General Note: In the series University of Florida Digital Collections.
General Note: Includes vita.
Bibliography: Includes bibliographical references.
Source of Description: Description based on online resource; title from PDF title page.
Source of Description: This bibliographic record is available under the Creative Commons CC0 public domain dedication. The University of Florida Libraries, as creator of this bibliographic record, has waived all rights to it worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law.
Statement of Responsibility: by Pin Wu.
Thesis: Thesis (Ph.D.)--University of Florida, 2010.
Local: Adviser: Ifju, Peter.
Electronic Access: RESTRICTED TO UF STUDENTS, STAFF, FACULTY, AND ON-CAMPUS USE UNTIL 2011-02-28

Record Information

Source Institution: UFRGP
Rights Management: Applicable rights reserved.
Classification: lcc - LD1780 2010
System ID: UFE0041978:00001


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PAGE 16

de-DE de-DE

PAGE 60

= + 1 = 1 = +1

PAGE 72

( )=0.5 sin 2 t = = cos (2 ) = = ( =0.5 )= cos 2 t

PAGE 73

= ( =(0.5 0.25 ) )=2 2 2

PAGE 123

= + 2 2 2 2 cos 2

PAGE 124

= + 1 1 ( 1 ) 2 2 2

PAGE 130

= 2

PAGE 171

= = 2 = = 2 = 1 2 = =

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= = = =

PAGE 179

=2 2 2 = 1.80E 03 9.40E 03 0.91 1.16 1.05 1.16 1.08E 02 1.02 2.04

PAGE 187

= 4 sin lim

PAGE 263

Plane Overall

PAGE 265

Name Nomenclature Number & Unit Name Nomenclature Number & Unit Name Nomenclatur e Number 1

PAGE 266

Velocity magnitude (m/s) X-Vorticity (1/s)

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Velocity magnitude (m/s) X-Vorticity (1/s)

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Instantaneous

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Phase Averaged Instantaneous Phase Averaged