The true airspeed (TAS; also KTAS, for knots true airspeed) of an aircraft is the speed of the aircraft relative to the airmass in which it is flying. The true airspeed is important information for accurate navigation of an aircraft.
Read more about True Airspeed: Performance, Airspeed Sensing Errors, Use in Navigation Calculations
Famous quotes containing the word true:
“... if it be true that death is annihilation, then the man who believes that he will certainly go straight to heaven when he dies, provided he has fulfilled certain simply observances in this life, has a cheap pleasure which will not be followed by the least disappointment.”
—Charles Sanders Peirce (1839–1914)