Results 21 to 30 of about 10,666 (258)
Validating Aircraft Noise Models
Proceedings, 2020 Aircraft noise, especially at takeoffs and landings, became a major environmental nuisance and a health hazard for the population around metropolitan airports.
Ran Giladi, Eliav Menachi
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Sensitivities of atmospheric composition and climate to altitude and latitude of hypersonic aircraft emissions [PDF]
Atmospheric Chemistry and PhysicsHydrogen-powered hypersonic aircraft are designed to travel in the middle stratosphere at approximately 30–40 km. These aircraft can have a considerable impact on climate-relevant species like stratospheric water vapor, ozone, and methane and thus would ...
J. Pletzer +3 more
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Future Aircraft and the Future of Aircraft Noise [PDF]
, 2022 AbstractIn order to cope with increasing air traffic and the requirement to decrease the overall footprint of the aviation sector—making it more sustainably and acceptable for the whole society—drastic technology improvements are required beside all other measures.
Knobloch, Karsten +16 more
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System Noise Assessment and Uncertainty Analysis of a Conceptual Supersonic Aircraft
Aerospace, 2022 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.
Junichi Akatsuka, Tatsuya Ishii
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Validity Of aircraft noise data [PDF]
The Journal of the Acoustical Society of America, 1974 An analysis of noise measurements taken at various distances from a number of aircraft during FAR 36 certification conditions is presented. Data scatter is shown to increase with distance and with decreasing aircraft/observer angle. Data normalization techniques, utilizing current standards, are inadequate at large distances and low airplane/observer ...
C. A. Sekyra, W. C. Storey, R. Yates
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Health Consequences of Aircraft Noise [PDF]
Deutsches Ärzteblatt international, 2008 The ever-increasing level of air traffic means that any medical evaluation of its effects must be based on recent data.Selective literature review of epidemiological studies from 2000 to 2007 regarding the illnesses, annoyance, and learning disorders resulting from aircraft noise.In residential areas, outdoor aircraft noise-induced equivalent noise ...
Martin, Kaltenbach +2 more
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Review on dynamics design techniques of propeller engine installation system
Hangkong gongcheng jinzhanWith the acceleration of propeller engine installation system's localization，the relevant technical research of installation system must be carried out，in which the dynamics design is one of the important parts. The dynamic performance characteristics of
CHEN Yonghui +5 more
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CURRENT STATE OF THE PROBLEM OF THE DEVELOPMENT OF ACOUSTIC LINERS FOR GAS-TURBINE ENGINES
Авіаційно-космічна техніка та технологія, 2020 A review of current international aviation noise requirements is provided. It is shown that international requirements for aircraft noise levels are constantly increasing.
Євген Олександрович Римаренко
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Investigation of the relationship between aircraft noise and community annoyance in China
Noise and Health, 2012 A survey of community annoyance induced by aircraft noise exposure was carried out around Hangzhou Xiaoshan International Airport. To investigate the relationship curves between aircraft noise and the percentage of "highly annoyed" persons in China and ...
Di Guoqing +4 more
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Proceedings, 2020 Noise annoyance due to aircraft operations extends well beyond the 55 Lden noise contours as calculated according to the Environmental Noise Directive (END).
Luc Dekoninck
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