Area of throat calculator

AREA MACH NUMBER RELATION

[ Gas dynamics – Yahya]

See the source image

where,

A is the area of the throat ( m2 )

A is the area of the nozzle exit ( m2 )

M is the Mach number (No unit)

γ is the specific heat ratio (No unit)

The area-Mach number relation gives the ratio of the local area to throat area as a function of Mach number. The area-Mach number relation is valid for isentropic flows (i.e. no shocks allowed) and calorically perfect gases.