9-5 4,5,6翼模型プロペラに対するベアリング・フォースの計測例  [in Japanese] 9-5 A Measurement of Propeller Bearing Force on 4,5,6-Bladed Model Propellers  [in Japanese]

This report shows results of measurement of propeller bearing force which is one of propeller exciting forces. Some techniques how to measure accurately small amplitude and high frequency forces and moments have been developed with harmony of sensitivities and stiffness of measuring system. For direct measurement of propeller bearing force, a 6-component dynamometer of revolving type was used. The device is easy to handle, similar to the conventional propeller dynamometer.