text: existing on the surface. Of course, the ve- 
  locity distribution, and resulting pressure dis- 
  tribution, 
  is determmed by the.shape or pro- 
  file of the surface and the angle of a’track. 
  Thus, any aerodynamic force can be repre- 
  sented as the product df three major factors: 
  
  the surface area of the objects 
  the dynamic pressure of the airstream 
  the coefficient or index of force determined 
  
  by the relative pressure distribution 
  
  This relationship is expressed by the following 
  equation : 
  
  F= C,qS 
  
  where 
  
  F = aerodynamic force, lbs. 
  C,=coeflicient of aerodynamic force 
  ,iay;mic 
  
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              [html]<thead><tr><td>This lift force is described by the following equation :</td><td>Mean</td></tr></thead><tbody><tr><td>Patients</td><td>Cases</td></tr><tr><td>a lbs. coefficient. lamic pressure, psfung surface area, sq.</td></tr><tr></tr><tr></tr><tr></tr><tr></tr><tr></tr></tbody>
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  pressure, psf 