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Ground influence on airfoils (1921)
NASA Technical Reports Server (NTRS) · leaf 16
Reflect!on mc'w^od Angle of at) tack: ". - Fig.8. R.A.F.15 Special. Ground, at cfyord. \ Wind, velocity' 30 in.-p.h. Readings on winsr 2.NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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