Calculate pressure altitude based on ambient pressure
The Pressure Altitude block computes the pressure altitude based on ambient pressure. Pressure altitude is the altitude in the 1976 Committee on the Extension of the Standard Atmosphere (COESA) United States with specified ambient pressure.
Pressure altitude is also known as the mean sea level (MSL) altitude.
The Pressure Altitude block icon displays the input and output units selected from the Units list.
Specifies the input units:
Pound force per square inch
Specify if out-of-range input invokes a warning, error, or no action.
|Contains the static pressure.|
|Contains the pressure altitude.|
Below the pressure of 0.3961 Pa (approximately 0.00006 psi) and above the pressure of 101325 Pa (approximately 14.7 psi), altitude values are extrapolated logarithmically.
Air is assumed to be dry and an ideal gas.
U.S. Standard Atmosphere, 1976, U.S. Government Printing Office, Washington, D.C.