Roll rate

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The roll rate is the amount per unit of time in which the aircraft can roll around its longitudinal axis . Usually the roll rate is given in degrees per second, very rarely in rad / s.

Aircraft with good lateral stability have a low roll rate. In the case of commercial aircraft, a stable, safe straight flight is desired, which can be restored after an aerodynamic disturbance even without the pilot's intervention. Longitudinal stability is of subordinate importance for combat aircraft and aerobatic aircraft . They are constructed in such a way that they have good maneuverability, i.e., among other things, can change their bank angle as quickly as possible. Aerobatic planes have a high roll rate. The ailerons of the Fiat G.91 are relatively large to enable good maneuverability and a high roll rate. Short wings (small wingspan) reduce the inertial mass and also favor a high roll rate.

Roll rates of some planes