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High-Bypass Turbofan-Engine Response Due to Fan Unbalance
Document Number: 690613
Date Published: February 1969
Author(s):
H. L. Leve - McDonnel Douglas Corp.
F. A. Biehl - McDonnel Douglas Corp.
Abstract:
The analytical procedures required in computing high-bypass turbofan-engine support system dynamic loads induced by a fan unbalance are discussed. The detailed analyses involve the coupling of pylon and engine vibration modes in the modal coordinate system and the determination of the steady-state response due to an unbalance in the rotating fan. Gyroscopic effects, engine case ovalization flexibility, and a redundant restraint to an external support are investigated. Graphs summarize the computed results and show the sensitivity to gyroscopic effects.
Product Status: In Stock
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