Definition
The speed at which an airplane rotates about its vertical axis, expressed in degrees per second. Yaw rate measures how quickly the nose is swinging left or right, and is the parameter sensed and controlled by a yaw damper to suppress unwanted oscillations such as Dutch roll.
Plain English
How fast the nose of the airplane is moving sideways, left or right, measured in degrees per second.
Context Anchor
Seen in yaw damper discussions, where the system senses unwanted left-right nose motion and helps reduce it.
Derivation
Yaw comes from an old nautical term meaning to deviate or stray off course. Rate simply means how fast something is changing. Together it describes how quickly the nose is straying from its heading.
Why Pilots Care
Yaw rate data drives yaw damper inputs that suppress Dutch roll oscillations, improving directional stability and passenger comfort.
Intuition Check
Yaw rate is not the amount the airplane is pointed left or right. It is how fast that left-right motion is changing.
Example Sentence 1
The yaw damper senses yaw rate and applies small rudder inputs to keep the nose from swinging during cruise.
Example Sentence 2
During stability testing, engineers record yaw rate response to rudder inputs at different airspeeds.