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Search: Posts Made By: PDR1
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Forum: Private Flying
6th Dec 2019, 10:38
Replies: 22
Views: 6,499
Posted By PDR1

No it isn't. All you are hearing is the different...

No it isn't. All you are hearing is the different vortex-shedding pattern as the blade's AoA and Cl change. It might even be the blade stalling, although I doubt it because (a) that would produce a...
Forum: Private Flying
5th Dec 2019, 05:47
Replies: 22
Views: 6,499
Posted By PDR1

On high performance gliders with natural laminar...

On high performance gliders with natural laminar flow wings it can be a significant issue, and there are in-flight "bug scraper" systems which have been devised to deal with it (eg this one from DG...
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