The mass flow rate (ṁ) of air or exhaust gases through a pulsejet engine can be calculated using the following formula:
- ṁ is the mass flow rate in kilograms per second (kg/s).
- A is the cross-sectional area of the engine’s throat in square meters (m²).
- V is the velocity of the gases at the throat in meters per second (m/s).
- ρis the density of the gases at the throat in kilograms per cubic meter (kg/m³).