Calibrated airspeed (CAS) is derived from indicated airspeed (IAS) by correcting for instrument and installation errors. While there isn’t a single mathematical formula to directly calculate CAS, it’s typically obtained by applying correction factors to the indicated airspeed. The formula to calculate Calibrated airspeed as follows:
Where:
- CAS is the calibrated airspeed,
- IAS is the indicated airspeed, and
- Correction Factor is the factor applied to adjust for instrument and installation errors.