text: NAVWEPS 00-SOT-80 
  BASIC AERODYNAMICS 
  
  Thus, the airspeed indicator system measures 
  
  the inherent compensation is inadequate and 
  additional correction must be applied. The 
  subtractive corrections that must be applied 
  to CA$ depend on pressure altitude and CAS 
  and are shown on figure 1.6 for the subsonic 
  flight range. The equivalent airspeed (EAS) 
  is the flight speed in the standard sea level 
  air mass which would produce the same free 
  stream dynamic pressure as the actual flight 
  condition. 
  
  dynamic pressure and will 
  velocity when instrument, position, compress- 
  ibility, and density corrections are applied. 
  These corrections are quite necessary for ac- 
  curate determination of 
  true airspeed and 
  accurate navigation. 
  
  relate true flight 
  
  Bernoulli’s principle and the concepts of 
  static, dynamic, and total pressure are the basis 
  of aerodynamic fundamentals. The pressure 
  distribution caused by the variation of local 
  stack and dynamic pressures on a surface is 
  the source of the major aerodynamic forces 
  and moment. 