Patent ID: 11866165
Assignee: THE BOEING COMPANY
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 6:
7. The duct stringer of claim 5, wherein each curved segment substantially has the formula:, y
       ⁢
       
        (
        x
        )
       
      
      =
      
       
        b
        (
        
         
          2
          ⁢
          
           a
          
          ⁢
          
           
            a
            -
            x
           
          
         
         -
         
          (
          
           a
           -
           x
          
          )
         
        
       
       b
      
     
     ;
    
   
   
     
   
  
 

wherein b is a curved segment span of the curved segment, a is a curved segment length of the curved segment, x is taken along an axis aligned with the longitudinal axis, and y is taken along an axis parallel to the lateral axis.