
Drag coefficient 

Lift coefficient derivative 

Magnus moment coefficient derivative 

Pitch damping moment derivative 

Gyroscopic (static) stability factor 

Dynamic stability factor 
A dynamic stability factor s_{d} can be defined from the linearized theory of gyroscopes (assuming only a small angle of yaw) and the above dynamic stability condition can be formulated. An alternate formulation of this condition leads to the illustrative stability triangle.
s_{d} however depends on five aerodynamic coefficients. Because these coefficients are hard to determine, it can become very complicated to calculate the dynamic stability factor, which varies as a function of the momentary bullet velocity.