The aerodynamic wind vane and the inherent stability of airplanes (1931)
NASA Technical Reports Server (NTRS) · leaf 17
N.A.C.A. Technical Memorandiam No.607 Pigs.1.4,6,8 … Fig.4 Mounting of horizontal tail surfaces for measuring hinge moments. Fig. 8 Mounting of model for measuring rolling moments. for-is Office. f^.A.e.A. Fig.5 Mounting of model for measuring yawing moments.
NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.