The measured stagnation pressure cannot itself be used to determine the fluid velocity (airspeed in aviation).

The dynamic pressure, then, is the difference between the stagnation pressure and the static pressure.

This increases the stagnation pressure recovered from the freestream and improves net thrust.

Normal shock waves tend to cause a large drop in stagnation pressure.

Also, the familiar relationship that stagnation pressure is equal to total pressure does not always hold true.

Dynamic pressure is the difference between stagnation pressure and static pressure.

However, shock waves are non-isentropic, so there is a reduction in total, or stagnation pressure relative to that of the free air stream.

There is no position error associated with stagnation pressure.

Static pressure and stagnation pressure are related by the Mach number of the fluid.

Though, entropy is increasing this must be accounted for by a drop in stagnation pressure of the downstream fluid.