GitHub - IndigoDomotics/airfoil: The old airfoil plugin that shipped with Indigo 5/6. Replaced with the Airfoil Pro plugin in Indigo 7+ (http://wiki.indigodomo.com/doku.php?id=indigo_7_documentation:plugins:airfoilpro).
NASA Technical Reports Server (NTRS) 20080005866: Airfoil : NASA Technical Reports Server (NTRS) : Free Download, Borrow, and Streaming : Internet Archive
![Shape Changing Airfoil: Ott, Eric a., Nasa Technical Reports Server (Ntrs): 9781287246862: Amazon.com: Books Shape Changing Airfoil: Ott, Eric a., Nasa Technical Reports Server (Ntrs): 9781287246862: Amazon.com: Books](https://m.media-amazon.com/images/I/81X1RCw+VwL._AC_UF1000,1000_QL80_.jpg)