The cross-sectional area (A) in the context of an LM2500 or any gas turbine engine generally refers to the area of the engine’s inlet or the section through which air or another working fluid enters the engine. The specific formula for calculating this area may vary depending on the engine’s design and geometry
– A is the cross-sectional area through which the air is flowing (in square meters, m²).
– V is the velocity of the airflow (in meters per second, m/s).
– ṁ is the mass flow rate (in kilograms per second, kg/s).
– ρ is the air density (in kilograms per cubic meter, kg/m³).