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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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Agata Kusmierek, Rafal Grzeszczyk, Andreas Strohmayer and Cezary Galinski
Given the increase in air traffic, the main challenges in aircraft design are in-flight emissions and noise heard by the community. These problems have thus far been solved by incremental improvements in aerodynamics, engine technology and operation. To ...
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Gianpiero Buzzo, Lidia Travascio, Angela Vozella, Mauro Baldizzone, Monica Gily, Clarissa Casagrande, Vincenzo Martina and Emanuele Quarona
The current rapid technological change identifies the evolution of people?s transportation as one of the primary effects. Hybrid-electric propulsion reveals potential advantages, including fuel savings, lower pollution, and reduced noise emissions. It is...
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Junichi Akatsuka and Tatsuya Ishii
This paper describes a system noise assessment of a conceptual supersonic aircraft called the NASA 55t Supersonic Technology Concept Aeroplane (STCA), its prediction uncertainty, and related validation tests. A landing and takeoff noise (LTO) standard fo...
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Victor F. Kopiev, Ivan V. Belyaev, Andrey I. Dunaevsky, Andrey A. Poukhov and Igor L. Trofimovsky
Compliance with environmental protection regulations, in particular, community noise requirements, constitutes one of the major obstacles for designing future supersonic civil aircraft. Although there are several noise sources that contribute to the tota...
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Michael Leupolz and Frank Gauterin
Especially for electric vehicles, the tire impact on car noise is becoming more and more important. The requirement of meeting certification criteria makes estimating the sound pressure level essential for vehicle manufacturers. Most recent research on t...
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Michel Nöding, Martin Schuermann, Lothar Bertsch, Marc Koch, Martin Plohr, Robert Jaron and Jeffrey J. Berton
The German Aerospace Center has launched an internal project to assess the noise impact associated with supersonic transport aircraft during approach and departure. A dedicated simulation process is established to cover all relevant disciplines, i.e., ai...
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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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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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Evangelia Maria Thoma, Tomas Grönstedt and Xin Zhao
Aircraft and engine technology have continuously evolved since their introduction and significant improvement has been made in fuel efficiency, emissions, and noise reduction. One of the major issues that the aviation industry is facing today is pollutio...
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