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The ground effect on lifting propellers (1937)
NASA Technical Reports Server (NTRS) · leaf 10
Figs. 1,2,3 N.A.C.A. Technical Memorandum No. 836 Propeller disk area ! Po •777777777^777 q O '777777%7777777T77777T7V7T/77777 hr5- Ground Figure 1 Propeller Figure 2 … 0 0.25 .5 1 1.5 a/d Figure 3NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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