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A study of static stability of airships (1924)
NASA Technical Reports Server (NTRS) · leaf 65
Fig. N.A.C-A. Technical Note No. 204 5o 10° Angle of pitch for elevator angle 10° Moment curvesNASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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