Effect of Relative Humidity:
Two replies contradicted each other. In fact, higher RH reduces air density.
This is because the molecular weight of water vapor, H2O is lower than that of O2 and N2, the main components of air.
At a given temperature and pressure, there are a specific...
AC Horiz Tail:
Lift Slope: dCl/dAoA ~ 2*Pi (AR/AR+1) * COS (sweep)
Sometimes AR/(AR+2) is used to convert from section lift data to finite wings.
In any case, the Aspect Ratio of the Horiz Stab is generally less than that of the Wing, so the lift slope is lower.
Pitch Damping is...
