What is indicated airspeed (IAS)?

What is indicated airspeed (IAS)?

• A. Speed through the air as corrected for temperature
• B. Speed read directly from the airspeed indicator
• C. Ground speed with wind adjustments
• D. Pressure altitude read from the altimeter

Answer: (B)

Indicated airspeed (IAS) is the speed read directly from the airspeed indicator in the cockpit of an aircraft. This measurement is based solely on the dynamic pressure of the air acting on the pitot tube and does not take into account any altitude or temperature corrections. It represents the performance of the aircraft in relation to the surrounding air, which is vital for ensuring safe flight operations. IAS is critical for maneuvers, stall recognition, and compliance with various speed limits specific to aircraft configuration and operation. The other options do not accurately define IAS; they refer to different concepts such as calibrated airspeed or ground speed, which involve corrections for altitude or environmental conditions.

Indicated airspeed (IAS) is the speed read directly from the airspeed indicator in the cockpit of an aircraft. This measurement is based solely on the dynamic pressure of the air acting on the pitot tube and does not take into account any altitude or temperature corrections. It represents the performance of the aircraft in relation to the surrounding air, which is vital for ensuring safe flight operations. IAS is critical for maneuvers, stall recognition, and compliance with various speed limits specific to aircraft configuration and operation.

The other options do not accurately define IAS; they refer to different concepts such as calibrated airspeed or ground speed, which involve corrections for altitude or environmental conditions.