What is flutter in aircraft

Flutter. Flutter is a dynamic instability of an elastic structure in a fluid flow, caused by positive feedback between the body’s deflection and the force exerted by the fluid flow .

Flutter is Google’s free and open-source UI framework for creating native mobile applications . Released in 2017, Flutter allows developers to build mobile applications for both iOS and Android with a single codebase and programming language. This capability makes building iOS and Android apps simpler and faster.

Flutter analysis ensures the aircraft is safe and free from flutter at all points in the flight envelope . Flight flutter tests must be performed to demonstrate the accuracy of the analysis and prove the airplane is safe to operate.

Flutter is an aeroelastic phenomenon that occurs in flexible bodies with relatively flat shapes, such as airplane wings and bridge decks . It involves oscillations with amplitudes that grow in time and can result in catastrophic structural failure.