Results 11 to 20 of about 179,532 (301)

Aircraft noise prediction [PDF]

open access: yesProgress in Aerospace Sciences, 2014
This contribution addresses the state-of-the-art in the field of aircraft noise prediction, simulation and minimisation. The point of view taken in this context is that of comprehensive models that couple the various aircraft systems with the acoustic sources, the propagation and the flight trajectories.
openaire   +2 more sources

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

open access: yesHangkong 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 NOx-Ozone Algorithmic Climate Change Functions for Optimising Flight Trajectories

open access: yesAerospace, 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   +7 more
doaj   +1 more source

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

open access: yesEnvironmental 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   +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]

open access: yesGeoscientific 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   +4 more
doaj   +1 more source

Prediction of Aircraft Noise Impact with Application to Hong Kong International Airport

open access: yesAerospace, 2021
As part of a collective research effort towards greener aviation, the present study focuses on the noise impact of aircraft operations around major airports.
Chunhui Wu, Stephane Redonnet
doaj   +1 more source

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

open access: yesAtmospheric 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   +5 more
doaj   +1 more source

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

open access: yes, 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   +3 more
core   +1 more source

Guidelines for the LTO Noise Assessment of Future Civil Supersonic Aircraft in Conceptual Design

open access: yesAerospace, 2022
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 ...
Grazia Piccirillo   +3 more
doaj   +1 more source

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

open access: yesAerospace, 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   +4 more
doaj   +1 more source

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