Airspeed Explained: IAS, TAS, Groundspeed and Mach

Airspeed Explained: IAS, TAS, Groundspeed and Mach

Share this story Ask a pilot how fast the aircraft is going and you may get a question back: which speed do you mean? The cockpit of a jet can show four or five different numbers that all claim to be its speed, and at cruising altitude they can differ by hundreds of...