The XV-15 tilt-rotor wing has six major aeroelastic modes that are close in frequency. To precisely excite individual modes during flight test, dual flaperon exciters with automatic frequency-sweep controls were installed. The resulting structural data were analyzed in the frequency domain (Fourier-transformed). Modal frequencies and damping were determined by performing curve fits to frequency-response magnitude and phase data. Results are given for the XV-15 with its original metal rotor blades. Frequency and damping values are also compared with predictions by two different programs, CAMRAD and ASAP.


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    Title :

    Identification of XV-15 aeroelastic modes using frequency sweeps


    Contributors:

    Published in:

    Publication date :

    1989-07-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




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    ACREE, C. W. / TISCHLER, MARK B. | AIAA | 1989


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    Using Frequency-Domain Methods to Identify XV-15 Aeroelastic Modes

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