In flight mechanics and aircraft design, the horizontal tail volume coefficient (Vh) is a dimensionless parameter that quantifies the effectiveness of the horizontal tail (often the horizontal stabilizer or tailplane) in controlling the aircraft’s pitch stability. It is an important factor in assessing the aircraft’s overall stability and control characteristics, specifically in terms of its pitch (nose-up or nose-down) stability.
- Vh: This represents the horizontal tail volume coefficient. It is a dimensionless parameter that quantifies the effectiveness of the horizontal tail in controlling the aircraft’s pitch stability. A higher Vh indicates greater effectiveness in maintaining stable flight.
- St: This likely represents the total horizontal tail surface area. The unit for this term should be square meters (m²).
- lt: This likely represents the horizontal tail arm or moment arm, which is the distance between the aircraft’s center of gravity (CG) and the center of the horizontal tail. The unit for this term should be meters (m).
- s: This is the wing reference area, typically measured in square meters (m²).
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