3494. An Error Propagation Analysis of Small Engine Mass Properties Measurements

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Title3494. An Error Propagation Analysis of Small Engine Mass Properties Measurements
Publication TypeConference Paper
Paper Number3494
Year of Publication2010
AuthorsPrimozich, Anthony, P. E.
Category Number3494
Conference69th Annual Conference, Virginia Beach, Virginia
Conference LocationVirginia Beach, Virginia
PublisherSociety of Allied Weight Engineers, Inc.
Date Published05/2010
Abstract

This paper investigates the impact of measurement error propagation on the accuracy of calculated weights and centers of gravity of small turbofan engines. Three variations of the two-load-cell crane-and-cable weighing technique were explored. The potential sources of measurement error were identified and analytical expressions for calculating the total error in the weight and center of gravity calculations were derived. A generic engine example was used to conduct a sensitivity analysis to illustrate the magnitude of error that could result from various weighing configurations. Results show that incorrect mass properties values can have an effect on modern aircraft flying qualities, such as fuel burn, aircraft handling, and trim.

Pages16
Key Words03. Center Of Gravity, 08. Weighing, 17. Weight Engineering - Procedures
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