The mass flow rate of the Rolls-Royce RB.145 engine, like any other engine, is a measure of the mass of air or fuel that passes through the engine per unit of time. It is an important parameter in aircraft design and is typically defined by the following formula:
- Mass Flow Rate (ṁ) is measured in kilograms per second (kg/s) or pounds per second (lb/s)
- Density (ρ) is the air density, usually measured in kilograms per cubic meter (kg/m³) or slugs per cubic foot (sl/ft³).
- Velocity (V) represents the airspeed or velocity of the airflow entering the engine, typically measured in meters per second (m/s) or feet per second (ft/s).
- Cross-Sectional Area (A) is the area through which the air is flowing, usually measured in square meters (m²) or square feet (ft²).