Max thickness: 9.0% at x = 30.07% chord
Max camber: 3.2% at x = 39.72% chord
Available data sources:
JavaFoil+Calcfoil stall+Eppler ext transition
Coordinates from TraCFoil.
Commercial use of the airfoil may be restricted by the designer's copyright.
MID 321a,b,c are 3 airfoils with near flat bottom.
MID 321a has thickness of 9.0%, MID 321b is 9.45%, and
MID 321c is 10.0%. All three are intended as the airfoils for R/C
electric flying models, especially for Re numbers from 60,000 up to
400,000 and more.