Wind-tunnel investigation of an NACA 0009 airfoil with 0.25-and 0.50-airfoil-chord plain flaps tested independently and in combination

Spearman, M Leroy
naca-tn-1517
March 1948

No Abstract Available

An Adobe Acrobat (PDF) file of the entire report:
http://naca.central.cranfield.ac.uk/reports/1948/naca-tn-1517.pdf