| IMPORTANT. This will be my last weekly video for a while. I have a lot to take care of academically and can no longer produce weekly videos. I may, however, post occasionally.
As for today’s topic; feathers! Birds use what are called ‘covert‘ feathers to reattach separated airflow during what would have been a wing stall. This stabilizes the wing even in the most turbulent of airflow, and allows continued lift production well into the stall angle range for most manmade aircraft. I was inspired to look into this idea by this video from Felix Schaller, linked here:    • Dynamic morphing Airfoil  gliding fl...  
I experimented with the covert feathers in much the same way Schaller did; by making fake feathers from a thin, bendy material, and affixing them to the wing‘s upper surface. I used only one row of smaller feathers, but was still able to notice improvement in glide ratio and stall recovery. I have no doubt that, had I put more time into the fabrication of the feathers, and arranged more birdlike feather rows, the improvement would have been more drastic.
If you enjoyed the video, your like and subscription are highly appreciated! As I will be away from this channel for a while, I do entreat you to share my videos with friends, and to help me maintain viewership during my absence. I have hundreds of other videos, so there always something new to watch! That said, thanks for watching!


Footage credits:
   • Red Kites in Slow Motion  The Slow M...  
   • Awesome Video Seagull Catching Fish  
   • Red Tailed Hawk catching It's prey  
https://lizzieharper.co.uk/image/gull...


General Aviation Playlist:    • Video  
F3P National Team Qualifications Playlist:    • Video  
Birds On The Feeder Playlist:    • Birds On The Feeder  Mourning Dove  
UMX Aircraft Playlist:    • Video  
Birds In The Wild Playlist:    • Birds In The Wild  Black Backed Gull  
Free Flight Gliders Playlist:    • Video  
Radio Controlled Gliders And Sailplanes Playlist:    • Video  
Homebuilt/Scratchbuilt Models Playlist:    • A big slow flyer  
General Aviation Playlist:    • Video  
Copterdude's Got Mail Playlist:    • Video  
Guillow's Models Playlist:    • A short tutorial; how to warp balsa s...