The Horizontal Tail Volume Ratio in flight mechanics refers to the ratio of the horizontal tail volume to the total wing volume. A proper (VH) is essential for ensuring that the horizontal tail surfaces provide sufficient stability to maintain the desired pitch attitude and control the aircraft during various phases of flight, including takeoff, cruise, and landing. An increase in Horizontal Tail Volume Ratio leads to a more negative pitching moment coefficient. The formula to calculate Horizontal tail volume ratio as follows:
Where:
- Cmt is the Tail Pitching Moment Coefficient.
- η is the Tail efficiency.
- CTlift is the Tail Lift Coefficient.