In flight mechanics, the term “tailwind” refers to the airflow that aids the forward motion of an aircraft. It occurs when the wind is blowing in the same direction as the aircraft’s travel. Tailwinds are an important factor to consider during flight operations as they can significantly affect the performance of the aircraft.
Tail wind case(vg)=Va+Vw
Velocity of the airplane with respect to air (va)
Motion of air (Vw)