Indicated airspeed (IAS) is the measure of an aircraft’s speed relative to the air around it as displayed on the airspeed indicator. It is a crucial parameter for pilots, providing real-time information on the aircraft’s velocity during flight. The formula to calculate Indicated airspeed (IAS) as follows:
Where:
- is the indicated airspeed,
- is the dynamic pressure (measured in units such as pounds per square foot or pascals),
- is the air density (measured in units such as pounds per cubic foot or kilograms per cubic meter),
- is the coefficient of lift (a dimensionless value representing the lift generated by the aircraft’s wings).