In aircraft design, atmospheric pressure is a key parameter, especially when considering cabin pressurization and altitude-related performance. Atmospheric pressure is typically expressed in Pascals (Pa), which is the SI unit for pressure. The formula for atmospheric pressure and a brief definition are as follows:Formula:
The formula for atmospheric pressure (P_atm) can be defined as:
- P_atm is the atmospheric pressure in Pascals (Pa).
- ρ (rho) is the density of the air in kilograms per cubic meter (kg/m³).
- g is the acceleration due to gravity in meters per second squared (m/s²).
- h is the height (altitude) above a reference point in meters (m).