text: NAVWEPS m-60T-30 
  BASIC AERODYNAMICS 
  
  It is derived from the relative pressure and 
  velocity distribution. 
  
  (2) Influenced only by the shape of the 
  surface and angle of attack since these factors 
  determine the pressure distribution. 
  
  (3) An index which allows evaluation of 
  the effects of compressibility and viscosity. 
  Since the effects of area, density, and velocity 
  are obviated by the coefficient form, com- 
  pressibility and viscosity effects can be 
  separated for study. 
  THE BASIC LIFT EQUATION. 