The pressure coefficient for the flat plate bottom surface (Cp3) is a dimensionless quantity that measures the relative change in pressure on the lower surface of the plate due to the oblique shock wave that forms when the plate is at a small angle of attack to the supersonic or hypersonic flow.
- Pressure coefficient for bottom surface (Cp3)
- Specific heat ratio (𝛾)
- Mach number for upper surface (M1)
- Ratio of static pressure bottom surface to the freestream static pressure upper surface (p3/p2)