Results 11 to 20 of about 1,539,014 (284)
Case Studies in Thermal Engineering, 2018 The exhaust noise, performance and emission characteristics of a gasoline engine fuelled by hydrous ethanol gasoline with 10%, 20% hydrous ethanol by volume (E10W and E20W) and pure gasoline (E0) were experimentally investigated. The tests were performed
Xiaokang Deng +4 more
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International Journal of ThermofluidsAn experimental investigation has been carried out to examine the engine roughness including combustion generated noise, overall external noise and block vibration of a direct-injection diesel engine running on biofuel derived from Jojoba oil and blends ...
Bishoy N. Abdo +3 more
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Main fan noise mitigation technologies in turbofan engines
Aviation, 2014 Aircraft noise and emissions have been of concern since the beginning of commercial aviation. The continuing growth in air traffic and increasing public awareness have made environmental considerations one of the most critical aspects of commercial ...
Fathollah Ommi, Mohammadreza Azimi
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Determination and Applications of Environmental Costs at Different Sized Airports – Aircraft Noise and Engine Emissions. [PDF]
, 2006 With the increasing trend of charging for externalities and the aim of encouraging the sustainable development of the air transport industry, there is a need to evaluate the social costs of these undesirable side effects, mainly aircraft noise and engine
Morrell, Peter +3 more
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Applied Sciences, 2021 Hybrid electric propulsion is a promising solution to reduce aircraft emissions, thus improving the sustainability of the air transport. In this work, a hybrid aircraft configuration with a rear-mounted boundary layer ingestion (BLI) engine has been ...
Francesco Petrosino +2 more
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Combustion Analysis of a CI Engine with Biodiesel Blends based on Vibro-Acoustic Measurement [PDF]
In this paper, a combustion analysis of a compression ignition (CI) engine operating with biodiesel blends has been experimentally investigated to examine the effects of biodiesel on the combustion process and the characteristics of the engine noise ...
Gu, Fengshou +4 more
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Technologies for jet noise reduction in turbofan engines
Aviation, 2012 Turbofan engines are commonly used for commercial transport due to their advantages of higher performance and lower noise. Jet noise is one of the principal noise sources of turbofan aeroplane engines and remains an acute environmental problem that ...
Mofid Gorji-Bandpy, Mohammadreza Azimi
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Modelling & integration of advanced propulsion systems [PDF]
, 2008 This research study focuses on the design of advanced propulsion cycles, having as primary design goal the improvement on noise emissions and fuel consumption.
Doulgeris, Georgios C.
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An investigation of the acoustic characteristics of a compression ignition engine operating with biodiesel blends [PDF]
, 2012 In this paper, an experimental investigation has been carried out on the acoustic characteristics of a compression ignition (CI) engine running with biodiesel blends under steady state operating conditions. The experiment was conducted on a four-cylinder,
Gu, Fengshou +9 more
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Performance and noise trade-offs on a civil airliner with over-the-wing engines [PDF]
, 2011 Community noise has become a major consideration in the design of new aircraft. The noise generated by the engines has decreased over the generations to the extent that a whole-airframe approach is required now to achieve further significant reductions ...
Joseph, P.F., Sobester, A., Powell, S.
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