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Maximum Forces Applied by Pilots to Wheel-type Controls (1937)
NASA Technical Reports Server (NTRS) · leaf 8
N.A.C.A. Technical Note No* 623 Figs. 1,2 Figure 2.- Set-up for measuring tangential forces.NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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