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Stan Proskurov, Markus Lummer, Jan Werner Delfs, Roland Ewert, Jochen Kirz, Martin Plohr and Robert Jaron
Overcoming the problem of excessive engine noise at low altitudes is a formidable task on the way to developing a supersonic passenger aircraft. The focus of this paper is on the fan noise shielding during take-off, investigated as part of the DLR projec...
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Dongwen Xue, Qun Yan, Zhuohan Li and Kai Wei
In this paper, a multidisciplinary optimization design method and its verification of low-noise aircraft propellers considering aerodynamics, noise, and structural strength were carried out to further reduce the aerodynamic noise of the aircraft propelle...
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Grazia Piccirillo, Nicole Viola, Roberta Fusaro and Luigi Federico
One of the most critical regulatory issues related to supersonic flight arises from limitations imposed by community noise acceptability. The most efficient way to ensure that future supersonic aircraft will meet low-noise requirements is the verificatio...
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Vincent Domogalla, Lothar Bertsch, Martin Plohr, Eike Stumpf and Zoltán S. Spakovszky
Promising low-noise aircraft architectures have been identified over the last few years at DLR. A set of DLR aircraft concepts was selected for further assessment in the context of sustainable and energy-efficient aviation and was established at the TU B...
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Michel Nöding and Lothar Bertsch
ICAO Annex 16 regulations are used to certify the acoustic performance of subsonic transport aircraft. Each aircraft is classified according to the measured EPNL levels at specific certification locations along the approach and departure. By simulating t...
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Jianan Zong, Bingjie Zhu, Zhongxi Hou, Xixiang Yang and Jiaqi Zhai
Electric propulsion technology has attracted much attention in the aviation industry at present. It has the advantages of environmental protection, safety, low noise, and high design freedom. An important research branch of electric propulsion aircraft i...
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Luís M. B. C. Campos
Air traffic is growing at a steady rate of 3% to 5% per year in most regions of the world, implying a doubling every 15?25 years. This requires major advances in aircraft noise reduction at airports, just not to increase the noise exposure due to the lar...
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