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- W250636103 abstract "The aeroelastic stability of a shaft-fixed, 1/8th Froude scaled bearingless rotor was investigated in a series of wind tunnel experiments simulating a wide range of operating conditions. A finite element formulation was used to perform a parallel theoretical analysis, with the goal of determining whether a bearingless rotor system could be made aeroelastically stable without the incorporation of auxilliary dampers. A quick estimate of lag mode damping was provided by a refined moving-block analysis implemented in real time which predicted similar damping values. Model rotor and blade properties were also determined, and these properties were used as inputs for a newly refined bearingless rotor analysis. Predicted results were compared with experimental results in hover and forward flight. Results indicated that soft pitch link stiffness increases pitch-lag coupling and stabilizes lag mode stability in hover and at low advance ratios, but destabilizes at higher advance ratios." @default.
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- W250636103 date "1989-01-01" @default.
- W250636103 modified "2023-09-27" @default.
- W250636103 title "Theoretical and experimental investigation of the aeroelastic stability of an advanced bearingless rotor in hover and forward flight" @default.
- W250636103 hasPublicationYear "1989" @default.
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