Results 71 to 80 of about 113,445 (204)

Transient elastohydrodynamic lubrication analysis of a novel metal-on-metal hip prosthesis with a non-spherical femoral bearing surface

open access: yes, 2011
Effective lubrication performance of metal-on-metal hip implants only requires optimum conformity within the main loaded area, while it is advantageous to increase the clearance in the equatorial region.
Anissian H.L.   +20 more
core   +1 more source

THERMODYNAMIC ANALYSIS OF ROTARY CONTROL HEAD LUBRICATION AND COOLING SYSTEM

open access: yesJixie qiangdu, 2016
According to the requirements of the CBM special rotary control head lubrication and cooling system and combined with the existing mature rotary control head lubrication cooling technology,this paper designed a structure without cooling and lubricating ...
HU Gang   +5 more
doaj  

Lubrication of Attitude Control Systems

open access: yes, 2011
The spacecraft attitude control system contains attitude error sensors such as gyroscopes and actuators such as momentum wheels and reaction wheels. The control moment gyros (CMG), in which the momentum wheels are mounted in gimbals, are also used in attitude control of spacecrafts. All these systems are designed to operate continuously till the end of
Krishnan, Sathyan   +3 more
openaire   +4 more sources

Parched elastohydrodynamic lubrication: Instrumentation and procedure [PDF]

open access: yes
A counter rotating bearing rig was designed and constructed to study transient elastohydrodynamic lubrication phenomena. New instrumentation is described and test procedures are documented.
Jansen, Ralph   +3 more
core   +1 more source

Large-bore tapered-roller bearing performance and endurance to 2.4 million DN [PDF]

open access: yes, 1983
The operating characteristics and experimental life estimates for 120.65 mm bore tapered roller bearings of two designs under combined radial and thrust loads were determined. A modified standard bearing design was tested at speeds up to 15,000 rpm.
Parker, R. J.
core   +1 more source

Research of Lubrication System of Wind Turbine Gearbox based on Flowmaster Software

open access: yesJixie chuandong, 2018
View of the shortcomings of the traditional lubrication system design,a design method based on Flowmaster software is put forward. Taking a certain type of wind turbine gearbox as an example,the power loss and the amount of oil supply are calculated,the ...
Zhao Xin   +4 more
doaj  

Numerical Simulation and Experimental Study on the Role of Jet Angle in Controlling the Flow of Transmission Gears

open access: yesLubricants
Gears play an important role in modern machinery and are indispensable transmission components, particularly at high speeds, where lubrication is essential for the reliability and efficiency of the gear unit.
Tiangang Zou   +5 more
doaj   +1 more source

Supersonic transport lubrication system investigation, phase 2 Periodical report [PDF]

open access: yes
Evaluation tests of ball bearings, face seals, and lubricants for use on Mach 3 aircraft gas turbine engine ...
Rhoads, W. L.
core   +1 more source

Design and Analysis of Loss-of-lubrication Capacity of Helicopter Reducer

open access: yesJixie chuandong, 2020
Based on the analysis of the results of the loss-of-lubrication test of helicopter reducer, the design and analysis method of the loss-of-lubrication capacity of reducer is studied from the aspects of gears, bearings, casing, lubrication system and ...
Wusheng Song, Changsheng Yang
doaj  

System modelling and characteristic research of novel high water-based synchronous lubrication piston pump

open access: yesMeitan kexue jishu
Expanding the speed range of high water-based piston pump is beneficial to the wide intelligent control of liquid supply system in fully mechanized coal mine.
Hao JIANG, Lang YU, Yongkang LI
doaj   +1 more source

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