142
Locomotion
Aircraft Flying

   
           
         












adds to lift force.
        
          





Streamlines around wing
143
Birds Flying

 °
 °
 
 

            





       

   
       


Drag-Induced Motion



          



     
           

    





Locomotion in Fluids
144
Locomotion
           




vv
 relative parallelfluid relative
-







small segment
of wing
main body



lift.



        

         


          
     
145


Biologically Inspired Ornithopters
An ornithopter


Robotic ornithopter (Cybird Radio-Controlled Ornithopter)







the French Academy of Sciences.
Gustave Trouvé’s ornithopter machine in 1870
Locomotion in Fluids
146
Locomotion
        
      
appearance of these radio-controlled ornithopters is close to that

airports.


   

 

Festo’s ornithopter


        



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