Advances in Acoustics Technology
J. M. Martin Hernandez
Wiley, Nov 9, 1995 - Technology & Engineering - 280 pages
Over the last thirty years the European aeronautical industry has achieved a respected and internationally successful position. This EC-Aeronautics Research Series provides the opportunity to present the results of recent research projects in areas critical to the future competitiveness of the industry in world markets. It contains Technical Publications of the completed EC-Aeronautics pilot phase project work, which has been supported under Area 5 : "Specific Activities Relating to Aeronautics" of the Brite/Euram Programme within the Second Framework Programme of European Community Activities in the Field of Research and Technology Development (1989?1992). This volume presents the three projects which, under this pilot phase, carried out work in three areas of noise and acoustics technologies: exterior noise, cabin noise, and acoustics loads in relation to structural fatigue.
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Acoustic Fatigue and Related Damage Tolerance of Advanced
Helicopter and TiltRotor Aircraft Exterior Noise Research
ACOUFAT acoustic fatigue acoustic loads acoustic tests active noise control actuators aero/acoustic loads aerodynamic aircraft algorithm angle approach ASANCA box azimuth behaviour blade pressure blade surface blade tip cabin calculations cavity CFRP comparison computational control system control unit correlation coupons cross-spectra developed Dornier 228 endurance tests ESDU evaluation excitation experimental failure finite-element fixed-wing aircraft flight testing GLARE GLARE materials helicopter helicopter rotor IABG identify input integrated interior noise investigated locations loudspeaker Mach number materials Matra measured method microphone modal analysis mode shapes model rotor noise levels noise reduction ONERA parameters partners performed phase piezoelectric plane pressure field propeller radiation rotor blades Saab sensors shaker shown in Figure signals simulation sound field sound pressure sound pressure level specimens spectral spectrum strain gauges structural response substructure subtask Task theoretical trim panel typical validation vibration vortex vortices wake wind-tunnel WT tests