Results 11 to 20 of about 14,758 (224)

Numerical Analysis for Wetting Behaviors of an Oil Jet Lubricated Spur Gear [PDF]

open access: yesLubricants, 2022
As it is widely employed in the aeronautical transmission system, a better understanding of the oil jet lubrication behavior is vital to determine the total system energy consumption.
Yu Dai   +3 more
doaj   +2 more sources

Jet aircraft lubrication oil droplets as contrail ice-forming particles [PDF]

open access: yesAtmospheric Chemistry and Physics, 2023
The radiative characteristics and lifetimes of contrails are dependent on the number concentration of ice-forming particles in the engine exhaust plume.
J. Ponsonby   +3 more
doaj   +6 more sources

Numerical Simulation of Oil Jet Lubrication for High Speed Gears [PDF]

open access: yesInternational Journal of Aerospace Engineering, 2015
The Geared Turbofan technology is one of the most promising engine configurations to significantly reduce the specific fuel consumption. In this architecture, a power epicyclical gearbox is interposed between the fan and the low pressure spool. Thanks to
Tommaso Fondelli   +4 more
doaj   +2 more sources

Numerical and Experimental Investigations of Oil Return Efficiency in Tapered Roller Bearings Under Oil Jet Lubrication

open access: yesLubricants
Tapered roller bearings are extensively utilized in the aerospace industry owing to their superior load-carrying capacity and extended service life. However, the majority of research conducted by scholars on the subject of bearing lubrication has focused
Yu Dai   +5 more
doaj   +2 more sources

Ouzo Column under Impact: Formation of Emulsion Jet and Oil-Lubricated Droplet [PDF]

open access: yesLangmuir, 2021
We investigated the dynamics of a liquid column consisting of ouzo emulsion under the impact generated when the liquid container lands on a hard ground. At a cavitation number of 0.36, where cavitation is expected to occur, our high-speed videography captured the traveling jet and cavitation bubbles while the oil microdroplets in ouzo after different ...
Kyota Kamamoto   +3 more
openaire   +3 more sources

Oil-Jet Lubrication of Epicyclic Gear Trains

open access: yes, 2023
Predicting and understanding the evolving oil distribution is the major key for the design of efficient and reliable cooling and lubrication systems in gear boxes. The complexity of multiple rotating and moving parts and the bad accessibility necessitate costly and complicated experimental approaches.
Haber, Matthias   +2 more
openaire   +2 more sources

Analysis of Influence Factor of Oil Jet Lubrication Impingement Depth of Aviation Spur Gear

open access: yesJixie chuandong, 2017
When the nozzle is decorated without offset and incline,gears with transmission ratios above 1 won’t be efficiently lubricated. In order to solve this problem,analytic method is adopted to establish mathematical model,basing on the geometric relationship
Wang Xin, Liu Shaojun, Hu Yun
doaj   +1 more source

Performance of a New Aeronautic Oil-Guiding Splash Lubrication System

open access: yesLubricants, 2022
Among ever-increasing demands for low power consumption, low weight, and compact reducer systems, an oil-guiding splash lubrication method integrating the oil-guiding cylinder and pipes is suggested to be more suitable for light helicopters, instead of ...
Yu Dai   +4 more
doaj   +1 more source

Numerical Calculation Analysis and Characteristic Research on Windage Loss of Oil-Jet Lubricated Aviation Gear Pair

open access: yesInternational Journal of Aerospace Engineering, 2022
The VOF (volume of fluid) multiphase transient simulation model of the windage loss of the gear pair under oil-jet lubrication was carried out by using the dynamic mesh technology with the powerful parallel computing capabilities of the Super Cloud ...
Linlin Li   +5 more
doaj   +1 more source

Identification and source attribution of organic compounds in ultrafine particles near Frankfurt International Airport [PDF]

open access: yesAtmospheric Chemistry and Physics, 2021
Analysing the composition of ambient ultrafine particles (UFPs) is a challenging task due to the low mass and chemical complexity of small particles, yet it is a prerequisite for the identification of particle sources and the assessment of potential ...
F. Ungeheuer   +2 more
doaj   +1 more source

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