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Identification Of Xv 15 Aeroelastic Modes Using Frequency Domain Methods by C. W. Acree
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1NASA Technical Reports Server (NTRS) 19900012440: Identification Of XV-15 Aeroelastic Modes Using Frequency-domain Methods
By NASA Technical Reports Server (NTRS)
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) with cross spectral and transfer function methods. Modal frequencies and damping were determined by performing curve fits to transfer function magnitude and phase data and to cross spectral magnitude data. Results are given for the XV-15 with its original metal rotor blades. Frequency and damping values are also compared with earlier predictions.
“NASA Technical Reports Server (NTRS) 19900012440: Identification Of XV-15 Aeroelastic Modes Using Frequency-domain Methods” Metadata:
- Title: ➤ NASA Technical Reports Server (NTRS) 19900012440: Identification Of XV-15 Aeroelastic Modes Using Frequency-domain Methods
- Author: ➤ NASA Technical Reports Server (NTRS)
- Language: English
“NASA Technical Reports Server (NTRS) 19900012440: Identification Of XV-15 Aeroelastic Modes Using Frequency-domain Methods” Subjects and Themes:
- Subjects: ➤ NASA Technical Reports Server (NTRS) - AEROELASTICITY - CURVE FITTING - RESONANT FREQUENCIES - TILTING ROTORS - VIBRATION DAMPING - XV-15 AIRCRAFT - FLAPERONS - FLIGHT TESTS - FOURIER TRANSFORMATION - SPECTRAL METHODS - TRANSFER FUNCTIONS - Acree, Cecil W., Jr. - Tischler, Mark B.
Edition Identifiers:
- Internet Archive ID: NASA_NTRS_Archive_19900012440
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