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- W2174494417 abstract "The paper describes a nonintrusive optical method for measuring flutter vibrations in unducted fan or propeller rotors and provides detailed spectral results for two flutter modes of a scaled unducted fan. The measurements were obtained in a high-speed wind tunnel. A single-rotor and a dual-rotor counterrotating configuration of the model were tested; however, only the forward rotor of the counterrotating configuration fluttered. Conventional strain gages were used to obtain flutter frequency; optical data provided complete phase results and an indication of the flutter mode shape through the ratio of the leading- to trailing-edge flutter amplitudes near the blade tip. In the transonic regime the flutter exhibited some features that are usually associated with nonlinear vibrations. Experimental mode shape and frequencies were compared with calculated values that included centrifugal effects." @default.
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- W2174494417 date "1991-06-03" @default.
- W2174494417 modified "2023-09-26" @default.
- W2174494417 title "Optical Measurements of Unducted Fan Flutter" @default.
- W2174494417 doi "https://doi.org/10.1115/91-gt-019" @default.
- W2174494417 hasPublicationYear "1991" @default.
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