After nearly a year of work this is likely the most labor intensive video I have made. Today I answer a complicated question about airplane winglets, specifically those on Shirl Diskey's E-Racer design. By running several of versions of the plane's wing through a computational fluid dynamics program and building off of a 2007 study on an E-Racer modified with a 9 inch radius winglet curve, we can see how much different levels of curvature affect cruise performance.

Sources and additional resources:
Marc Zeitlin’s 2007 Oshkosh presentation:
http://www.cozybuilders.org/Oshkosh_P...
Plane&Pilot article on experimental aircraft:
https://www.planeandpilotmag.com/owne...
EAA article about Burt Rutan’s VariEze:
https://www.eaa.org/eaa-museum/museum...
NASA resource on winglet history:
https://www.nasa.gov/centers/dryden/a...
Boldmethod article on canard aircraft:
https://www.boldmethod.com/learn-to-f...
Aerodynamics for Naval Aviators
https://www.faa.gov/regulations_polic...
Real Engineering video on winglets:
   • Winglets - How Do They Work? (Feat. W...  
Boldmethod article on interference drag:
https://www.boldmethod.com/learn-to-f...

Helpful FreeCAD, OpenFOAM, and Paraview tutorials:
   • FreeCAD CFD- External Flow Analysis E...  
   • How to calculate aerodynamic forces w...  

Videos
ERacer flyby:
   • ERacer Fly by,  Rough River fly In 2017  
ERacer gear test:
   • Eracer N382RB Gear Test.AVI  
VariEze flight footage:
   • VARI EZE flight in AUSTRIA - time flies  
Long EZ footage:
   • Long Ez N610TE - First Flight   and
   • Weirdest Aircraft I’ve ever flown - L...  
ERacer takeoff:
   • ERacer Aircraft Takeoff  
NASA 707:
   • KC-135A Winglet Test Flight  
Wind tunnel:
   • NASA Tests Boeing Aircraft Tail in Wo...  
Long EZ landing:
   • Long ez N82MT missed approach & landing  
Long EZ stall:
   • Long ez 82MT Stall  
Long EZ wing:
   • Fun Day in the Stagger EZ  

Pictures
ERacer Flying:
https://www.facebook.com/photo/?fbid=...
Embraer Praetor Winglet:
https://www.aopa.org/news-and-media/a...
Burt Rutan:
https://www.burtrutan.com/home/biogra...
VariEze:
https://www.kitplanes.com/flight-revi...
Richard Whitcomb:
https://www.nytimes.com/2009/10/26/us...
ERacer Original Wing:
https://www.facebook.com/photo/?fbid=...

Flight simulator footage: Kerbal Space Program