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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    Titel :

    Identification of XV-15 aeroelastic modes using frequency sweeps


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    1989-07-01



    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch




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


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    Engineering Index Backfile | 1942


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

    Acree, C. W. / Tischler, Mark B. | SAE Technical Papers | 1987