Upset Prevention, Part 2

Airbus’ extensive flight-test program to understand wake vortices discovered that upon initially encountering the vortex of the lead aircraft, it induced an AOA increase on the outboard portion of the trailing aircraft’s wing. This increases the lift on the wing encountering the vortex. Therefore, the initial rolling motion is actually away from the core of the vortex.
Credit: Airbus
In Part 1, we discussed four incidents involving airliner upsets. Dr. Richard Thackray of the FAA’s Civil Aeromedical Institute conducted a study to better understand pilot responses to potentially critical situations, such as unexpected clear air turbulence. The study, titled “Performance Recovery...

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