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by time-domain0 2742 days ago
If the chaff had maximum surface area-to-weight ratio approaching spiders ballooning, <2.5 um dust particles and dandelion seeds, and there were enough thermals upwelling air in the area, it's entirely possible for chaff to persist as long as there is an average slight updraft gradient to periodically relift material.

Granted, it's of limited military value unless it were dumped in large quantities (such as an/several E- prefixed US mil aircraft flying air defense suppression/Wild Weasel) and such upwelling wind conditions were present. It's usually intended to create false echoes to misdirect a missile or break a radar lock in real-time with a starting velocity similar to the original aircraft, and then it has no purpose once it separates far from the launching aircraft.

2 comments

Speaking of dandelion seeds, check out this video showing the vortex involved in their flight(1). I think it's beautiful.

https://static-content.springer.com/esm/art%3A10.1038%2Fs415...

Doesn’t the chaff need to be of certain lengths to match the frequencies of the incoming radar. I thought I read something about that in one of my previous wake cycles
Yes, peak scattering will occur at 1/2 wavelength, and multiples of that.