Nozzle Mass Flow Rate of a Scramjet Engine in Terms of Isentropic Flow Calculator

The mass flow rate through a ramjet engine nozzle is a critical parameter that influences the engine’s performance. A ramjet engine is an air-breathing engine that operates at high speeds, relying on the forward motion of the vehicle to compress incoming air and mix it with fuel for combustion.

The velocity ($V$) of the incoming air can be related to the Mach number ($M$) and the local speed of sound ($a$): $V=M\cdot a$

which gives,

where,

• ṁ is the mass flow rate of the nozzle
• $\rho$ is the density of the exhaust gases at the throat
• A is the throat nozzle area
• M is the Mach Number
• a is the speed of sound in the medium