Definition
An empennage configuration in which the horizontal stabilizer is mounted on top of the vertical stabilizer, forming a shape resembling the letter T when viewed from the front or rear. This arrangement places the horizontal tail surfaces above the wing wake and propeller slipstream during normal flight, but can leave them exposed to disturbed, low-energy air at high angles of attack.
Plain English
A tail design where the small horizontal wing at the back is mounted on top of the upright fin, instead of attached to the fuselage. From behind, the tail looks like the letter T.
Context Anchor
Seen in airplane design descriptions and in stall discussions, especially when considering how airflow over the tail affects nose-up and nose-down control.
Derivation
Named simply for the shape: the horizontal stabilizer sitting on top of the vertical stabilizer forms a capital T when viewed from the front or rear.
Why Pilots Care
T-tail designs can enter deep stalls where wing wake reduces elevator authority, requiring specific recovery techniques.
Grounding Statement
At a high nose-up angle, rough airflow from the wings can reach the high-mounted tail and make nose-down control less effective.
Intuition Check
Do not treat a T-tail as just a cosmetic tail shape. Its location can change how well the airplane responds to elevator control, especially at low airspeed or during a stall.
Example Sentence 1
The Piper Tomahawk's T-tail places the horizontal stabilizer well above the wing wake during cruise.
Example Sentence 2
Because the aircraft has a T-tail, the pilot maintains extra speed on approach to avoid wake interference with the tail.