how do strakes improve lateral stability in aircraft?

Faustino Mellerson: when you look at smokestacks in a steady wind, you should be reminded of the response of a wire in a steady flow and the Strouhal number versus Reynolds number response.Strakes are attached to the smokestack to break-up the flow pattern around the body of the smokestack so that you don't get that oscillation once the critical Reynolds number is passed.Strakes on the body of aircraft behave the same way. They break up the flow in the near field of the body to change the transition behavior in such a way as to avoid the resonant oscillations that naturally arise as the flow moves through the different Reynolds number regimes.As a result, delaying or destroying oscillation regimes clearly improves the lateral stability of the aircraft....Show more

Donny Bankson: i understood from ur answer that it improves the flow by delaying the transition etc...but how does it increase the lateral stability, they are on the fuselage behind the wings ?

Tric! ia Dossous: putting what Zaphod suggested a touch otherwise at the same time as a swept wing plane sideslips one wing has a decrease sweep attitude than the different relative to the loose move. That wing might want to have a better drag which will attempt to teach the plane again to 0 sideslip.