Engine trembling in cruise

[kosta]

Hello,

there is a weird trembling of the engine  in flight. I am aware of the effect on the ground where the engine slightly swings on certain N1, but in flight? Also sometimes is slightly swinging too. I don't believe that is intended?

How can I post a video? It has 18mb.

Edited Sunday at 07:49 AM by kosta

[Swisspilot1986]

that's a classic aerodynamic effect, especially visible in bigger GE engines for exemple