What is the role of roll damping coefficient in aircraft performance?

AI Thread Summary
The roll damping derivative quantifies the change in rolling moment coefficient relative to the roll rate and is typically negative. A higher roll damping derivative indicates greater resistance to roll, which is characteristic of gliders that are designed for stability rather than maneuverability. In contrast, aircraft like the FA-18 fighter have a lower roll damping coefficient, allowing for agile evasive maneuvers. Understanding this concept is crucial for analyzing aircraft performance and stability. The provided resources offer further clarification on the topic.
btbam91
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Hello, I am new to Aerodynamics and am having trouble understanding what exactly the roll damping derivative is.

The roll damping derivative is a measure of the change in rolling moment coefficient with respect to nondimensional roll rate and is usually negative.


Does that mean a glider (which isn't expected to roll) has a really high roll damping derivative where an FA-18 fighter has a lower roll damping coefficient so that it can perform evasive maneuvers?

Thanks a lot!
 
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