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作者:Pieter Sijtsma
来源:[J].International Journal of Aeroacoustics(IF 0.627), 2010, Vol.9 (3), pp.357-374MultiScience
摘要:Fan broadband noise is a major component of the total noise emitted by turbofan engines, especially at lower shaft speeds. It is generated in the rotor/stator region, but the exact origin is not always known. This article discusses the application of phased array beamforming tech...
作者:Pieter Sijtsma
来源:[J].International Journal of Aeroacoustics(IF 0.627), 2009, Vol.6 (4), pp.357-374MultiScience
摘要:To obtain higher resolution acoustic source plots from microphone array measurements, deconvolution techniques are becoming increasingly popular. Deconvolution algorithms aim at identifying Point Spread Functions (PSF) in source plots, and may therefore fall short when actua...
作者:Stefan Oerlemans , Liekele Broersma , Pieter Sijtsma
来源:[J].International Journal of Aeroacoustics(IF 0.627), 2009, Vol.6 (4), pp.309-333MultiScience
摘要:The reliability of the phased array technique for quantifying airframe noise was assessed in the DNW-LLF open and closed wind tunnel sections. Acoustic measurements were performed on wing noise from a 1:10.6 scaled Airbus A340 model, using a 4-m diameter out-of-flow micropho...
作者:Pieter Sijtsma
来源:[J].Noise Notes, 2011, Vol.10 (1), pp.39-52MultiScience
摘要:Fan broadband noise is a major component of the total noise emitted by turbofan engines, especially at lower shaft speeds. It is generated in the rotor/stator region, but the exact origin is not always known. This article discusses the application of phased array beamforming tech...

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