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Ground influence on airfoils (1921)
NASA Technical Reports Server (NTRS) · leaf 12
1 Lift Drag … .01 -1— Distance above grtjund cliotd .n terms 1J" 0 10 3 4 5 6 7 0 8 0 1 Inches "between chords at C R.A.F.15 Special ground a,z various distances. Fig. 4. Reflection method. Wind velocity 30 m.p.hi Reading on Wing 3.NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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