normal shock


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Related to normal shock: Oblique shock

normal shock

A shock wave at 90° to the direction of airflow. It is found ahead of an airfoil approaching the speed of sound. Airflow behind the normal shock is invariably subsonic. Also called a normal shock wave.
References in periodicals archive ?
Caption: Figure 33: Perspective view of the detached normal shock (bifurcated shock) at the entrance.
The pressure distribution curves of the stationary engine case and rotor rim surface are completely overlapped before normal shock wave in the different [P.sub.r] as shown in Figure 9.
It is mainly owing to the bow wave going from normal shock on the nose region to oblique shock wave on the non-nose region.
Chapter 9.5, "The normal shock wave." New York: McGraw-Hill.
The weak shock produces a small disturbance in the flow behind the shock wave, the next important solution of oblique shock waves are strong oblique shock waves, if normal shock waves created over the wedge, the tremendous changes in the physical quantities in the ahead and behind the shock wave and within the ramjet subsonic diffuser and also heat transfer occur in a non-equilibrium state.