The Density of the Exhaust Gas (ρ_exhaust) in aircraft design represents the mass per unit volume of the exhaust gases expelled from the engine’s nozzle. It’s an important parameter for understanding engine performance and is typically calculated using the ideal gas law.
The formula for density is:
- ρ_exhaust is the density of the exhaust gases in kilograms per cubic meter (kg/m³).
- P_exhaust is the pressure of the exhaust gases in pascals (Pa).
- R is the specific gas constant for the exhaust gases in joules per kilogram per kelvin (J/(kg·K)).
- T_exhaust is the temperature of the exhaust gases in kelvin (K).