Experimental study of liquid-filled cylinder with unequal internal diameters

A series of tests was conducted using a liquid-filled gyroscope to study the behavior of cylinders with dissimilar internal diameters. The discontinuity in the internal diameter of the container produced a lip that modified the characteristic liquid eigenfrequency of the cylinder and the amplitude behavior of the gyroscope. A simple correction for this unusual geometry can be formulated by using an average aspect ratio, which is based upon the volume and height of the container. The use of an average aspect ratio only grossly defines the differences between the gyroscope data and the available predictive models.