Development of a near-field acoustical holography system for aircraft jet source noise measurements
نویسندگان
چکیده
Military jet aircraft are exposing both ground maintenance personnel and the community to high levels of noise. The US Department of Defense is funding research to develop advanced modeling tools for noise reduction techniques and community noise exposure. For these tools to achieve their full potential, innovative measurement and analysis methods are necessary to characterize the jet noise source region. To meet this need a portable near-field acoustic holography (NAH) system is under development to characterize full scale jet noise emissions. This paper will describe the basic design of the measurement array and data acquisition system for the NAH system, which will employ a patch measurement approach. With the patch measurement approach, multiple NAH reconstruction techniques can be used in tandem to provide improved confidence in the resulting reconstructions. a Email address: [email protected] b Email address: [email protected] c Email address: [email protected]
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