It gets its directional stability from how quickly that it's spinning.

Such a condition will cause the aeroplane to lose its directional stability and also to fly one wing down.

Rear-wheel steering also helps the 911 Turbo to be more agile when parking and increases directional stability at very high speeds.

Both lateral and directional stability may be improved by washing out the angle of incidence on both sides of the surface, thus:

There are some small rudder-like appendages on the rear wings, but they hardly look big enough to provide any sort of directional stability.

"Well," he replied, rather miserably, "I'm not nearly so perfect as the Longitudinal and Directional Stabilities.