The velocity of a piston engine in aircraft design typically refers to the speed of the air entering the engine. This velocity is critical for calculating parameters related to engine performance.
- ṁ is the mass flow rate (in kilograms per second, kg/s).
- ρ is the air density (in kilograms per cubic meter, kg/m³).
- A is the cross-sectional area through which air enters the engine (in square meters, m²).
- V is the velocity of the air entering the engine (in meters per second, m/s).