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How to determine the pull of a kite


This is a rather technical and more or less theoretical question.

I wonder whether and how it is possible to determine the pull of a kite with a given
area, making a given angle with the wind, blowing with a given velocity ? I dot not mean by empirical trial/error process, but rather with aerodynamics theory.

Is there a (simple or simplified) formula that gives the relationship between kite
area, angle and wind velocity (and maybe other factors that I'm missing). 

I must admit that my classes of physics have already faded away, but that I'd be
glad to refresh them.

Any aerodynamics wizzard out there in the sky ???




          kite  ------->   /                             
                          /                              
                         /.                  <===        
                        /  .                 <===  WIND  
                       /    .                <===        
                      /      .                           
                     /        .              
                    /          .             
                                .            
                                 .           
                                  .          
                                   .         
                                    .        
                                     .       
                                      .      
                                       .     
                                        .    
                                         .   
                                          .  
                                           . 
                                            . <---- line

Jean-Christophe Engel - engel@irisa.fr
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