Computes density altitude from field-level observations. This is a convenience
function that first derives pressure altitude from the field elevation and
altimeter setting, then applies the temperature correction via the ISA model.
Density altitude represents the altitude in the standard atmosphere at which
the air density equals the actual density at the observation point. High density
altitude degrades engine power, propeller/rotor efficiency, and aerodynamic lift.
For the two-input form (pressure altitude + OAT already known), use
isa.densityAltitudeFt() from @squawk/units directly.
Parameters
fieldElevationFt: number
Field elevation above MSL in feet.
altimeterSettingInHg: number
Current altimeter setting (QNH) in inches of mercury.
oatCelsius: number
Outside air temperature at the field in degrees Celsius.
Computes density altitude from field-level observations. This is a convenience function that first derives pressure altitude from the field elevation and altimeter setting, then applies the temperature correction via the ISA model.
Density altitude represents the altitude in the standard atmosphere at which the air density equals the actual density at the observation point. High density altitude degrades engine power, propeller/rotor efficiency, and aerodynamic lift.
For the two-input form (pressure altitude + OAT already known), use
isa.densityAltitudeFt()from@squawk/unitsdirectly.