An accurate method of measuring the moments of inertia of airplanes (1930)
NASA Technical Reports Server (NTRS) · leaf 21
N.A.C.A. Technical Note No.351 Fig.l … Fig.l Airplane and swinging gear arranged for the determination of the moment of inertia about the X axis "by the compound pendulum method.
NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
