2126. Measuring Moments of Inertia of Aircraft and Spacecraft

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Title2126. Measuring Moments of Inertia of Aircraft and Spacecraft
Publication TypeConference Paper
Paper Number2126
Year of Publication1993
AuthorsMacConochie, Ian O.
Paper Category18. WEIGHT ENGINEERING - SPACECRAFT DESIGN
Conference52nd Annual Conference, Biloxi, Mississippi, May 24-26
Conference LocationBiloxi, Mississippi
PublisherSociety of Allied Weight Engineers, Inc.
Date Published5/24/93
Abstract

Moments of inertia of aircraft are needed in order to make evaluations of flying qualities and aircraft response to atmospheric disturbances. This paper presents a historical perspective of early methods of measurement of moments of inertia including a description of various test rigs involving compound and bifilar pendulums. Also, an early technique for obtaining the vertical center of gravity location by swinging the aircraft at two different pendulum lengths is described. Four techniques for determining moments of inertia are reviewed from the standpoint of sensitivity, accuracy, and complexity. A small working model to illustrate the methods was built so that theoretical and experimental results could be compared.

Pages11
Key Words18. Weight Engineering - Spacecraft Design
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