true true airspeed true airspeed (TAS) wikipedia true airspeed (TAS) true airspeed http://en.wikipedia.org/wiki/True_airspeed KTAS true airspeed (TAS) wikipedia true wikipedia formula at low-speed flight TAS true true airspeed wikipedia true airspeed true airspeed (TAS) true airspeed https://en.wikipedia.org/wiki/True_airspeed true airspeed true airspeed true airspeed true air speed