Copying Nature - Feathers On a Glider Wing to Reduce Drag and Soften Stall скачать в хорошем качестве

Copying Nature - Feathers On a Glider Wing to Reduce Drag and Soften Stall

| 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 man-made aircraft. I was inspired to look into this idea by this video from Felix Schaller, linked here:    • Dynamic morphing Airfoil - gliding flight ...   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 bird-like 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 Mo Guys      • Awesome Video Seagull Catching Fish      • Red Tailed Hawk catching It's prey   https://lizzieharper.co.uk/image/gull... General Aviation Playlist:    • Видео   F3P National Team Qualifications Playlist:    • Видео   Birds On The Feeder Playlist:    • Birds On The Feeder - Mourning Dove   UMX Aircraft Playlist:    • Видео   Birds In The Wild Playlist:    • Birds In The Wild - Black Backed Gull   Free Flight Gliders Playlist:    • Видео   Radio Controlled Gliders And Sailplanes Playlist:    • Видео   Homebuilt/Scratchbuilt Models Playlist:    • A big slow flyer   General Aviation Playlist:    • Видео   Copterdude's Got Mail Playlist:    • Видео   Guillow's Models Playlist:    • A short tutorial; how to warp balsa surfac...