3851 Roll and Horizontal Axis Moment of Inertia (MOI) Measurements using a Gravity Pendulum
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Paper
Abstract
Customers with long cylindrical parts have had difficulty measuring the inertia about the roll axis on systems that require the part to be mounted vertical in order to conduct the measurement. This has led to issues with the requirement of a variety of fixtures and risky handling of parts in order to orient the part. Raptor Scientific has developed a measurement system that measures inertia about the roll axis in a horizontal manner using an air bearing fixture and universal rings to measure the time period, and when combined with center of gravity measurements from a KSR instrument and mass measurements, determines the inertia about this axis.
This paper examines the goals of the end user, the process used in designing the fixture, final results and accuracy requirements / what is achievable, and lessons learned along the way for the design and build of the final deliverable instrument.
