Motion pictures were taken of movements of small silk tufts on airfoil surface as angle of attack increased through range of angles including stall; boundary layer flow at certain angles of attack was indicated by patterns formed on surface of airfoil in lampblack.
Flow observations with tufts and lampblack of stalling of four typical airfoil sections in N.A.C.A. variable-density tunnel
Nat Advisory Committee Aeronautics -- Tech Note
1938
10 pages
8 Supp sheets, Bibliography
Report
English
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Engineering Index Backfile | 1938
|Pressure distribution over N.A.C.A. 23012 airfoil with N.A.C.A. 23012 external-airfoil flap
Engineering Index Backfile | 1938
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