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Measurement of the Longitudinal Moment of Inertia of a Flexible Airplane

出版	National Advisory Committee for Aeronautics, 1956
URL	http://books.google.com.hk/books?id=dOwjD_sLvpgC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN

註釋The method of measuring moment of inertia of an airplane by oscillating it on the knife edges and a spring is examined analytically for application to flexible airplanes. First, the equations of motion of a flexible airplane mounted on three supports are presented. Then these equations are examined for conditions required to minimize the difference between the apparent inertia of the flexible airplane and the inertia of the rigid airplane. The analysis is applied to a flexible airplane mounted on various combinations of springs and knife edges. A practical combination is then selected in which the moment-of-inertia correction for flexibility is very small.