2008
DOI: 10.1016/j.ast.2007.10.004
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Aircraft noise reduction technologies: A bibliographic review

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Cited by 159 publications
(97 citation statements)
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References 151 publications
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“…With the significant progress of sensors, data acquisition and computer processing technology, the use of microphone-phase array technology is becoming more and more extensive [4]. The aircraft industry heavily uses phased array for the identification of noise sources on engines, airframes, landing gear and other parts of an aircraft [5].…”
Section: Introductionmentioning
confidence: 99%
“…With the significant progress of sensors, data acquisition and computer processing technology, the use of microphone-phase array technology is becoming more and more extensive [4]. The aircraft industry heavily uses phased array for the identification of noise sources on engines, airframes, landing gear and other parts of an aircraft [5].…”
Section: Introductionmentioning
confidence: 99%
“…The field comprised of these shocks is referred to as the "rotor-locked" pressure field because the pattern of shock waves, which originates at the fan plane, propagates upstream through the incoming flow in a helical path, spinning with the same angular velocity as the fan's rotor blades [3,4]. The rotor-locked pressure field comprised of the shock waves formed at the fan blade tips is composed of harmonics of the engine shaft rotation frequency, known as the engine order (EO) harmonics [1,2]. The noise produced by this mechanism at supersonic relative fan-tip speeds is mainly tonal, and is referred to colloquially as "buzz-saw" noise, or alternatively also as "multiple-pure" tones or "combination" tones.…”
mentioning
confidence: 99%
“…Reliable models that can predict the levels of the radiated sound from a range of different sources of aircraft noise are required in order to ensure that increasingly stringent civil aviation noise regulations can be met [1,2].…”
mentioning
confidence: 99%
“…Casalino et al (2008) afirma que o ruído proveniente do conjunto rotor/estator é o mais proeminente nos motores de alto bypass em comparação com o ruído gerado no núcleo do motor. A Figura 1.1 apresenta os principais elementos de um motor aeronáutico que influenciam a propagação acústica ou que possuem fontes geradoras associadas, sendo os elementos de interesse deste trabalho o conjunto rotor/estator.…”
Section: Fontes De Ruído Em Motores Turbo-fanunclassified
“…Os principais fenômenos que geram fontes sonoras, de acordo com Ffowcs-Williams & Dowling (1983), são: forças aerodinâmicas aplicadas ao escoamento e vorticidade, principalmente resultante de turbulência. De acordo com Casalino et al (2008), no conjunto rotor/estator, as fontes de ruído estão localizadas nos bordos de ataque e de fuga das pás do conjunto.…”
Section: Fontes De Ruído Em Motores Turbo-fanunclassified