text: The pressure coefficient is a parameter for studying both incompressible/compressible fluids such as water and air.  The relationship between the dimensionless coefficient and the dimensional numbers is
  where:
  :  is the static pressure at the point at which pressure coefficient is being evaluated
  :  is the static pressure in the freestream (i.e. remote from any disturbance)
  :  is the freestream fluid density (Air at sea level and 15 °C is 1.225 )
  :  is the freestream velocity of the fluid, or the velocity of the body through the fluid