The Calibrated Airspeed (CAS) Calculator is a valuable tool used in aviation to determine the calibrated airspeed of an aircraft. CAS is a critical parameter for pilots as it represents the true airspeed corrected for instrument and installation errors. By inputting the indicated airspeed (IAS) and the installation error factor into the calculator, pilots can quickly obtain the calibrated airspeed, providing them with accurate information for safe and efficient flight operations.
Formula of Calibrated Airspeed Calculator
The formula used in the Calibrated Airspeed Calculator is as follows:
CAS = IAS + (IAS × Installation Error Factor)
Where:
- CAS is the calibrated airspeed.
- IAS is the indicated airspeed.
- Installation Error Factor is the correction factor for instrument and installation errors, usually provided in the aircraft’s flight manual or performance data.
Table of General Terms
| Term | Definition |
|---|---|
| True Airspeed (TAS) | The speed of an aircraft relative to the airmass in which it is flying. |
| Ground Speed | The speed of an aircraft relative to the ground. |
| Mach Number | The ratio of the speed of an object to the speed of sound in the medium through which the object is moving. |
Example of Calibrated Airspeed Calculator
Let’s consider an example to illustrate the use of the Calibrated Airspeed Calculator:
Suppose an aircraft’s indicated airspeed (IAS) is 150 knots, and the installation error factor is 0.02. Plugging these values into the formula, we can calculate the calibrated airspeed (CAS) as follows:
CAS = 150 + (150 × 0.02) = 150 + 3 = 153 knots
Therefore, the calibrated airspeed of the aircraft is 153 knots.
Most Common FAQs
A: Indicated airspeed (IAS) is the speed shown on the aircraft’s airspeed indicator, whereas calibrated airspeed (CAS) is the indicated airspeed corrected for instrument and installation errors.
A: The installation error factor is usually provided in the aircraft’s flight manual or performance data. It accounts for errors introduced by the aircraft’s instruments and their installation.
A: Calibrated airspeed provides pilots with an accurate measure of the aircraft’s true airspeed, enabling them to make precise calculations for navigation, performance, and safety.