The rate of change of pitching moment due to the aircraft’s pitch rate is a measure of how the pitching moment (a turning force) on an aircraft changes as the aircraft’s pitch angle changes over time. This is often denoted as “Cm_q” and is related to the aircraft’s stability and control characteristics.
- “M q” is the pitching moment due to the pitch rate.
- “Cmq” is the rate of change of pitching moment with respect to pitch rate.
- “c” is the mean aerodynamic chord of the aircraft’s wing.
- “QS” represents the dynamic pressure (0.5 * density * velocity^2), where “density” is the air density and “velocity” is the aircraft’s velocity.
- “u0” is the reference velocity (usually the trim or equilibrium velocity).
- “Iyy” is the moment of inertia about the aircraft’s pitch axis.