sawtooth trailing edge

[Piotrsko]

Originally Posted by freebeard

My impression has been that a serrated edge affect mostly the acoustics.

Bingo! Give the man a cigar. Low Airport noise is so important that they will alter thrust and increase drag levels to accommodate. Ever notice at altitude and high speeds you can hear them for a fifty mile arc?

[kach22i]

I've done some research into this topic and modified my hovercraft to suit, so I feel that I have first hand experience.

Acoustics is indeed what it is all about.

Also if you think about it, sound is energy so there are relationships to be explored.

In fact I just posted a link to a video where sound is studied in a wind tunnel for transition noise.

About the halfway mark, the young woman mentions it.

https://youtu.be/-QvLeBlX5XU