Results 31 to 40 of about 2,103,194 (320)

A Review of the Research on the Test Technology of Aircraft Engine Blade-casing Rub-impact

Hangkong gongcheng jinzhan, 2020
The static rotor rub-impact problem is one of the main reasons of vibration over-standard failure during transition mode of engine. In order to carry out more effective assessment verification and analysis, the current domestic and abroad research status
MU Qinqin, XU Jian
doaj   +1 more source

Case Study for Testing the Validity of NO_x-Ozone Algorithmic Climate Change Functions for Optimising Flight Trajectories

Aerospace, 2022
One possibility to reduce the climate impact of aviation is the avoidance of climate-sensitive regions, which is synonymous with climate-optimised flight planning.
Pratik Rao, Feijia Yin, Volker Grewe, Hiroshi Yamashita, Patrick Jöckel, Sigrun Matthes, Mariano Mertens, Christine Frömming   +7 more
doaj   +1 more source

Future Aircraft and the Future of Aircraft Noise

Aviation Noise Impact Management, 2022
In 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 ...
K. Knobloch, E. Manoha, O. Atinault, R. Barrier, C. Polacsek, M. Lorteau, D. Casalino, D. Ragni, G. Romani, Francesco Centracchio, Monica Rossetti, Ilaria Cioffi, U. Iemma, V. Cipolla, A. Frediani, Robert Jaron, L. Enghardt   +16 more
semanticscholar   +1 more source

Regional sensitivities of air quality and human health impacts to aviation emissions

Environmental Research Letters, 2020
Emissions from civil aviation degrade air quality, and have been estimated to lead to ∼16 000 premature deaths annually. Previous studies have indicated that aviation emissions in different regions have varying corresponding air quality and human health ...
Flávio D A Quadros, Mirjam Snellen, Irene C Dedoussi   +2 more
doaj   +1 more source

An advanced method of contributing emissions to short-lived chemical species (OH and HO₂): the TAGGING 1.1 submodel based on the Modular Earth Submodel System (MESSy 2.53) [PDF]

Geoscientific Model Development, 2018
To mitigate the human impact on climate change, it is essential to determine the contribution of emissions to the concentration of trace gases. In particular, the source attribution of short-lived species such as OH and HO2 is important as they play a
V. S. Rieger, V. S. Rieger, M. Mertens, V. Grewe, V. Grewe   +4 more
doaj   +1 more source

Exacerbation of adverse cardiovascular effects of aircraft noise in an animal model of arterial hypertension. [PDF]

Redox Biol, 2020
Arterial hypertension is the most important risk factor for the development of cardiovascular disease. Recently, aircraft noise has been shown to be associated with elevated blood pressure, endothelial dysfunction, and oxidative stress.
Steven S, Frenis K, Kalinovic S, Kvandova M, Oelze M, Helmstädter J, Hahad O, Filippou K, Kus K, Trevisan C, Schlüter KD, Boengler K, Chlopicki S, Frauenknecht K, Schulz R, Sorensen M, Daiber A, Kröller-Schön S, Münzel T.   +18 more
europepmc   +2 more sources

Revisiting the contribution of land transport and shipping emissions to tropospheric ozone [PDF]

Atmospheric Chemistry and Physics, 2018
We quantify the contribution of land transport and shipping emissions to tropospheric ozone for the first time with a chemistry–climate model including an advanced tagging method (also known as source apportionment), which considers not only the ...
M. Mertens, V. Grewe, V. Grewe, V. S. Rieger, V. S. Rieger, P. Jöckel   +5 more
doaj   +1 more source

The Parametric Aircraft Noise Analysis Module - status overview and recent applications [PDF]

, 2011
The German Aerospace Center (DLR) is investigating aircraft noise prediction and noise reduction capabilities. The Parametric Aircraft Noise Analysis Module (PANAM) is a fast prediction tool by the DLR Institute of Aerodynamics and Flow Technology to ...
Bertsch, Lothar, Guerin, Sebastien, Looye, Gertjan, Pott-Polenske, Michael   +3 more
core   +1 more source

On the Fundamental Possibility of a Supersonic Civil Aircraft to Comply with ICAO Noise Requirements Using Existing Technologies

Aerospace, 2022
Compliance with environmental protection regulations, in particular, community noise requirements, constitutes one of the major obstacles for designing future supersonic civil aircraft.
Victor F. Kopiev, Ivan V. Belyaev, Andrey I. Dunaevsky, Andrey A. Poukhov, Igor L. Trofimovsky   +4 more
doaj   +1 more source

Challenges and opportunities for low noise electric aircraft

International Journal of Aeroacoustics, 2022
A new class of electric aircraft is being developed to transport people and goods as a part of the urban and regional transportation infrastructure. To gain public acceptance of these operations, these aircraft need to be much quieter than conventional ...
Eric Greenwood, K. Brentner, Robert F. Rau, Ze Feng Ted Gan   +3 more
semanticscholar   +1 more source