Experience in Rotor Balancing of Large Commercial Jet Engines
نویسندگان
چکیده
Experienceouerthepasttenyearsinvibration and cabin noise control of new airplane jemgine systems Is summarized. why the newer systems required more stigent control is discussed. he transitionfrom single plane balance methods, in cmnnwn use on older systems, to conventional 2.plane influence coefFcient @.C.J methods, and then to optimized 2-p&e LC. methods is described. Examples of residual unbalancepredictionsfrom an esive testdatabasearesholun.Applicanonoffiniteelement analysis to understand data anomalies is described. Issues ofI.C. uariance and use ofgeneric LC.‘s are di.cussed. Improwments using optimized balance methods are shown. Aduanced control systems are discussed inCludingLLseoftransientengine-andairplaneon-board data acquiGtion systems. Projections for future design method.5 are o&red.
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