with i = 0.4y Tl-exp (- J)l 



A = 26 



_tw 



P 



1/2 



T = Lt 

 tW ^ 



+ 2 cos 



9u\ 

 9yj 



3w 

 w w 



1/2 



e = 0.0168 



I (-te-t 



)dy 



u^ = (u +w +2u w cos 6) 

 te e e e e 



2 2 — 1/2 

 u = (u +w +2uw cos 9) 



y is the value of y at which e . = e 



■^ c -^ 1 o . 



The displacement model presently used for this body adds the theoretical effec- 

 tive displacement thickness (defined below) to the body surface along the major (y)- 

 and minor (z)-axes of the elliptic cross section. The surface profile along each 

 of these axes is extended by hand-fairing from the location of separation, or 93 

 percent of body length (whichever occurs first), to 5-percent aft of the body, 

 resulting in an open body. An elliptical cross section is defined between the off- 

 sets of the major and minor axes. 



2 

 The C K computer program has been modified to compute the effective displace- 

 ment thickness a* at the major and minor axes along the axial length of the body. 

 The definition for a*, which is similar to the axisymmetric expression, is 



/ 



r +2A* cos a 



2 

 cos a 



(3) 



