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Vertical descent of the autogiro (1932)
NASA Technical Reports Server (NTRS) · leaf 15
JT.A.G.A. ieclmical Menoran4™i Ho, 673 figs, 1^2,3 … 0) (vq - w)^ -*^^;;^;;^ ^ Perpendic-alar to rotor axis azad to eleneiit dr Mg. 2 I / A i4 ^ \ / \ ! ! \ 1 ' ;!-'// ^ ; \ \ \ ) ! ' / I»I / * ' ! / A T ! { i I 1 I iNASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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