Editing Aeroelasticity (section)

=== Buffeting ===
[[File:309908main EC89-0096-206 full.jpg|thumb|Buffeting of the fin caused by the breakdown of the vortex on the NASA [[High Alpha Research Vehicle|HARV]] F/A-18 wing]]
[[Transonic buffet|Buffeting]] is a high-frequency instability, caused by airflow separation or shock wave oscillations from one object striking another. It is caused by a sudden impulse of load increasing. It is a random forced vibration. Generally it affects the tail unit of the aircraft structure due to air flow downstream of the wing.{{citation needed|date=June 2018}}

The methods for buffet detection are:
# Pressure coefficient diagram<ref>{{cite journal |last1=Golestani |first1=A. |first2=Mir Biuk Ehghaghi |last2=Bonab |first3=Mohammad Reza |last3=Soltani |display-authors=1 |title=An experimental study of buffet detection on supercritical airfoils in transonic regime |journal=Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering |year=2015 |volume=229 |issue=2 |pages=312–322 |doi=10.1177/0954410014531743 |s2cid=110673867 }}</ref>
# Pressure divergence at trailing edge
# Computing separation from trailing edge based on [[Mach number]]
# Normal force fluctuating divergence