The cross-sectional area of a nozzle in aircraft design represents the area through which a fluid or substance exits the nozzle. The formula to calculate the cross-sectional area of the nozzle (A) is given by rearranging the mass flow rate formula:
- A = Cross-sectional area of the nozzle (in square meters, m²)
- ṁ = Mass flow rate of the fluid or substance passing through the nozzle (in kilograms per second, kg/s)
- ρ = Density of the fluid or substance passing through the nozzle (in kilograms per cubic meter, kg/m³)
- V = Velocity of the fluid or substance passing through the nozzle (in meters per second, m/s)