←back to thread

Passing planes and other whoosh sounds

(www.windytan.com)
207 points zdw | 2 comments | 17 Apr 25 05:53 UTC | HN request time: 0.427s | source
Show context
roygbiv2 ◴[17 Apr 25 08:36 UTC] No.43714351[source]▶
We have planes pass overhead at about 6000ft. When the conditions are right they'll make a completely different sound, I've always assumed it's the Doppler effect mixed with the valley we live in but I'm always very curious when it does happen.

They make their usual sound but then there's a second sound that arrives, a lot higher pitched. Sounds like they've struck it in reverse or something (they haven't they're just doing a normal decent).

replies(4): >>43714711 #>>43714747 #>>43714851 #>>43740083 #
1. ano-ther ◴[17 Apr 25 09:45 UTC] No.43714711[source]▶
Very interesting question. I thought that was when they extend their flaps so the wings become a bit wider for the slower flight and that creates some resonance.
replies(1): >>43724467 #
2. roygbiv2 ◴[18 Apr 25 02:46 UTC] No.43724467[source]▶
Mmm could be. I need more data. Eg is it when landing on one runway or are they going to the other one, cloud layers etc.