Wing and Rudder Flutter

[Kanelbolle]

I would like to see Wing and Rudder Flutter in the game. The planes are to static when doing tight turns and maneuvers.

 

This will make the game more realistic and the plane less dull. :pilotfly:

 

Exsample:

Massive rudder flutter at 4:15

[Texac]

When flutter starts you are in real trouble. This should never happen.

 

One more reason to have it implemented in some time.

 

Though with wing flex and over wing vapor effects we already got some great external eyecatchers.

[Torso]

When flutter starts you are in real trouble. This should never happen.

 

Actually, it happens all the time and is shown happening in tons of videos. In fact in the wing flex thread they reference and request it as well along with videos showing wing flutter as examples. It does add to the effect and would be nice to see added. A little noise in the flex to reflect the forces at play and add to planes 'liveliness" for lack of a finding a better word.

[mvsgas]

Now I'm curious. You have a link for a plane where flutter occurs (without the plane desintegrating)?

 

 

egDWh7jnNic

 

b-jqd31Dr7A

 

 

https://youtu.be/SViiqylV0lA?t=6m22s

Edited January 13, 2018 by mvsgas

[dolfo]

One should not confuse flutter and buffeting.

 

Quick wiki search:

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. In a linear system, 'flutter point' is the point at which the structure is undergoing simple harmonic motion - zero net damping - and so any further decrease in net damping will result in a self-oscillation and eventual failure. 'Net damping' can be understood as the sum of the structure's natural positive damping, and the negative damping of the aerodynamic force. Flutter can be classified into two types: hard flutter, in which the net damping decreases very suddenly, very close to the flutter point; and soft flutter, in which the net damping decreases gradually.[9] Methods of predicting flutter in linear structures include the p-method, the k-method and the p-k method.[8] In water the mass ratio of the pitch inertia of the foil vs that of the circumscribing cylinder of fluid is generally too low for binary flutter to occur, as shown by explicit solution of the simplest pitch and heave flutter stability determinant.[10]

 

For nonlinear systems, flutter is usually interpreted as a limit cycle oscillation (LCO), and methods from the study of dynamical systems can be used to determine the speed at which flutter will occur.[11]

 

Structures exposed to aerodynamic forces — including wings and aerofoils, but also chimneys and bridges — are designed carefully within known parameters to avoid flutter. In complex structures where both the aerodynamics and the mechanical properties of the structure are not fully understood, flutter can be discounted only through detailed testing. Even changing the mass distribution of an aircraft or the stiffness of one component can induce flutter in an apparently unrelated aerodynamic component. At its mildest this can appear as a "buzz" in the aircraft structure, but at its most violent it can develop uncontrollably with great speed and cause serious damage to or lead to the destruction of the aircraft,[12] as in Braniff Flight 542.

 

Buffeting[edit]

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.

[Kanelbolle]

I might have mixed the words Buffeting and Fluttering, the same still apply. It would be nice to see less static air frames :)

Edited January 16, 2018 by Kanelbolle

[Lixma 06]

The F-86's wings go mental at transonic speeds.

[John Hargreaves]

I hope we get that Nasa livery for the F-18, I like it

[Torso]

I might have mixed the words Buffeting and Fluttering, the same still apply. It would be nice to see less static air frames :)

 

Guilty of the same, buffeting I suppose is the more accurate term. And I share the same sentiment.

[obious]

Any chance we'll be seeing wing flutter or buffeting on the F-18 anytime soon? It looks great on the F-16 and F-5E