A400M European transport, if it is so advanced, why does it use propellers

[Unsettomati]

Originally Posted by HappyRider

What we see is really an optical illusion/artifact.

No, on the A400M what we see are the Hamilton Sundstrand scimitar propellers.

[HappyRider]

Originally Posted by Unsettomati

No, on the A400M what we see are the Hamilton Sundstrand scimitar propellers.

Thanks, didn't know that. I suppose the mentioned effect will be there regardless.

[PacoMartin]

https://www.youtube.com/watch?v=6XwgbHjRo30

There is something called the stroboscopic effect, for sampling below the Nyquest frequencies. Cameras have a frame rate, and your brains fill in the missing time between the images. But when you have a fast moving repetitive motion like spinning image with spokes or propellers. Your brain fills in the information incorrectly so that you perceive the wheels or props as changing direction from clockwise or counterclockwise.