In aircraft design and engine analysis, density ((\rho)) is a fundamental parameter that represents the mass of a fluid per unit volume. The formula for density is defined as:
- ρ = Density of the fluid (in kilograms per cubic meter, kg/m³)
- P = Pressure of the fluid (in pascals, Pa)
- R = Specific gas constant for the fluid (in J/(kg·K))
- T = Temperature of the fluid (in kelvin, K)