Nozzle Mass Flow Rate of a Ramjet Engine In Terms of Ideal Gas Law 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 density ($\rho$) of the incoming air can be determined using the ideal gas law:

which gives,

where,

• ṁ is the mass flow rate (kg/s),​
• $P$ is the pressure of the incoming air (Pa),
• $R$ is the specific gas constant for air (J/(kg·K)),
• $T$ is the temperature of the incoming air (K).
• $A$ is the cross-sectional area of the nozzle (m²),
• $V$ is the velocity of the air through the nozzle (m/s).