Investigating aircraft noise reduction measures - stepstowards The Quiet Aircraft

机译：调查飞机降噪措施-迈向安静飞机

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Within the scope of the research network Quiet Traffic, Lufthansa and the German Aerospace Center (DLR) have launched the subprogram Quiet Aircraft. Two flyover noisernmeasurement campaigns have been conducted to investigate the noise properties of Lufthansa's A319 passenger aircraft and MD11 freighters. Noise reducing measures for A319s have been successfully tested. Results of the flyover noise measurements are presented here, along with how they are integrated to form the new joint project FREQUENZ, which is dedicated to developing new measures and optimizing the design of tested retrofit parts. The FREQUENZ network consists of nine partners,rnproviding an excellent merger of scientific know-how and industrial experience. For the A320 family, the aim is to develop airworthy retrofit parts, while for the MD11, different approach procedures taking advantage of special characteristics of this aircraft will be analyzed.

机译：在研究网络“安静交通”的范围内，汉莎航空和德国航空航天中心（DLR）启动了子项目“安静飞机”。开展了两次立交噪声测量运动，以调查汉莎航空的A319型客机和MD11型货机的噪声特性。 A319的降噪措施已成功测试。本文介绍了飞越噪声测量的结果，以及如何将其集成以形成新的联合项目FREQUENZ，该项目致力于开发新的措施并优化经过测试的改装零件的设计。 FREQUENZ网络由九个合作伙伴组成，这完美地融合了科学知识和行业经验。对于A320系列，其目的是开发适航性的改装零件，而对于MD11，将分析利用该飞机特殊特性的不同进近程序。

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《International congress and exposition on noise control engineering;Inter-noise 2004》|2004年|1-8|共8页
会议地点 Prague(CZ);Prague(CZ)
作者
G. Saueressig; K. Haag;
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Department of Environmental Issues, Lufthansa German Airlines, FRA KU, 60549 Frankfurt,rnGermany Gerd.Saueressig@dlh.de;

Department of Environmental Issues, Lufthansa German Airlines, FRA KU, 60549 Frankfurt,rnGermany Karlheinz.Haag@dlh.de;

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2. A laboratory investigation into the effect of quiet-time interval between aircraft noise events on overall noisiness [J] . Morinaga Makoto, Tsukioka Hidebumi, Kaku Jiro, The Journal of the Acoustical Society of America . 2018,第1期

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3. DLR, GE MEASURE AIRCRAFT NOISE ON GROUND AND AIRCRAFT SYNCHRONOUSLY FOR FIRST TIME [J] . Airport Noise Report . 2020,第34期

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4. Investigating aircraft noise reduction measures - steps towards The Quiet Aircraft [C] . International congress and exposition on noise control engineering . 2004

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5. Conceptual design and technical risk analysis of quiet commercial aircraft using physics-based noise analysis methods. [D] . Olson, Erik D. 2006

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7. A Noise Prediction Method on the Movement Measuring Points at Measurement for Aircraft Noise [O] . Jeong Ha Woo, Byung Chan Lee 2015

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Investigating aircraft noise reduction measures - stepstowards The Quiet Aircraft

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