Results 21 to 30 of about 6,314 (249)

Development and application of intelligent multi-functional dust removal system for air directional drilling

Meikuang Anquan, 2023
In order to solve the problems of dust pollution, poor lubrication of screw motor and overtemperature in the hole during air directional drilling in broken soft coal seams, an intelligent multifunctional dust removal system was developed for the first ...
LI Kun, ZHANG Jie
doaj   +1 more source

Features of test of air-fuel system of gas turbine engine [PDF]

Омский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", 2018
The article is devoted to the problem of ensuring the operability of rotary bearings of a gas turbine engine (GTE) with an air-fuel lubrication system.
V. N. Klimov, D. Ya. Dud’ev, V. Ya. Sigaylo, N. I. Klimov   +3 more
doaj   +1 more source

Determination of temperature mode of rotary bearings of gas turbine engine with air and fuel lubrication system [PDF]

Омский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", 2020
The article is devoted to the problem of choosing the optimal parameters of the air-fuel mixture in gas turbine engines (GTE) with the air-fuel lubrication system.
V. N. Klimov, D. Ya. Dudev, V. Ya. Sigaylo, N. I. Klimov   +3 more
doaj   +1 more source

Atomization Characteristics of Special-Design Pneumatic Two-Fluid Nozzles for Helicopter Main Reducers: A Numerical and Experimental Investigation

Aerospace, 2022
Oil mist lubrication can be utilized as an emergency lubrication system in the main reducer of a helicopter. A special-design pneumatic two-fluid nozzle is the crucial system component for atomizing lubricant oil, so exploring the atomization ...
He Liu, Huiyun Cheng, Yu Dai, Xiang Zhu
doaj   +1 more source

Lubrication system of a roller cone bit [PDF]

MATEC Web of Conferences, 2020
For drilling roller bits that work with face purging, a device for a circulating lubrication system is proposed through the use of a plunger pump. A constant circulation of the lubricant is realized with a performance proportional to the speed of the bit.
Simisinov Denis, Afanas’ev Anatoly, Adas Vitaliy, Simisinov Anton   +3 more
doaj   +1 more source

Analysis of Circulation Characteristics and Heat Balance of High-Speed Rolling Bearing under Oil-Air Lubrication

Lubricants, 2023
Aiming to solve the problem of oil-air lubrication failure caused by the high working temperature of high-speed rolling bearings, this study proposes a method, based on the theory of gas-solid two-phase flow and bearing tribology, of predicting the ...
Xiqiang Ma, Mian Zhang, Fang Yang, Yujun Xue, Ruijie Gu, Nan Guo   +5 more
doaj   +1 more source

Numerical and Experimental Investigations to Assess the Impact of an Oil Jet Nozzle with Double Orifices on the Oil Capture Performance of a Radial Oil Scoop

Aerospace, 2023
To study the influence of orifice spacing on the oil–air two-phase flow and the oil capture efficiency of an oil scoop in an under-race lubrication system, an experimental platform for under-race lubrication was built, and a calculation model for the oil–
Le Jiang, Yaguo Lyu, Yanjun Li, Yewei Liu, Yankun Hou, Zhenxia Liu   +5 more
doaj   +1 more source

Sustainable Machining: MQL Technique Combined with the Vortex Tube Cooling When Turning Martensitic Stainless Steel X20Cr13

Machines, 2023
For the purpose of contributing to sustainable machining, the aim was to investigate the turning of martensitic stainless steel X20Cr13 under alternative cooling and lubrication techniques.
Graciela Šterpin Valić, Tihana Kostadin, Goran Cukor, Marko Fabić   +3 more
doaj   +1 more source

Machining response of Ti64 alloy under Nanofluid Minimum Quantity Lubrication (NFMQL) [PDF]

E3S Web of Conferences, 2021
Rapid wear progression of cutting insert associated with attainment of excessive tool-tip temperature are indispensable causes which limit operational domain of cutting velocity during dry turning of Ti64 alloy.
Sahoo Sarthak Prasad, Datta Saurav
doaj   +1 more source

Validation of a Flow Channel to Investigate Velocity Profiles of Friction-Reducing Ship Coatings [PDF]

TransNav, 2021
Reducing friction with specialised hull coatings or air lubrication technologies has a potential reducing energy consumption and emissions in shipping.
Jonathan Weisheit, Vincent Emanuel Schneider, J.M. Serr, Nils Hagemeister, Johannes Oeffner   +4 more
doaj   +1 more source