Results 101 to 110 of about 595,906 (266)
An Improved Air Film Model for Studying the Tilt Characteristics of Aerostatic Thrust Bearings
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT In this study, an improved mass‐spring model that treats the lubricating air film as distributed springs is proposed to calculate the static and dynamic angular stiffness of aerostatic thrust bearings. The proposed model refines the traditional mass‐spring model by introducing the spatially varying mechanical properties of the air film and the
Hui Zhuang, Jianguo Ding, Yu Chang
wiley +1 more source
Simulation Research of Spray Lubrication and Optimization of Nozzle Position in a Complex Gearbox
Jixie chuandong, 2018 The numerical simulation of spray lubrication and improvement of lubricant condition in a complex gearbox are researched. An experimental rig for spray lubrication of a pair of high-speed gears is set up and relevant experiments are carried out firstly ...
Qian Xueling +5 more
doaj
Lubrication of high-speed, large bore tapered-roller bearings [PDF]
The performance of 120.65-mm- (4.75-in.-) bore tapered-roller bearings was investigated at shaft speeds up to 15,000 rpm (18,000 DN). Temperature distribution and bearing heat generation were determined as a function of shaft speed, radial and thrust ...
Parker, R. J., Signer, H. R.
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Key Technical Fields and Future Outlooks of Space Manipulators: A Survey
SmartBot, EarlyView.This paper systematically reviews the technological development of space manipulators, emphasizing the unique challenges posed by space environments. It examines four areas: structural design, modeling, planning, and control, while introducing typical ground test platforms.
Gang Chen +12 more
wiley +1 more source
Jixie chuandong, 2022 The numerical simulation of injection lubrication of high-speed wide gears and the improvement of lubrication effect are studied. Based on experimentally verified simulation methods，the oil injection lubrication simulation analysis of the oil-gas two ...
Xiangyu Li +3 more
doaj
Performance tests with a 4.75 inch bore tapered-roller bearings at high speeds [PDF]
The tapered-roller bearings were tested at speeds to 15,000 rpm which results in a cone-rib tangential velocity of 130 m/sec. (25,500 ft/min). Lubrication was applied either by jets or directly to the cone-rib, augmented with jets.
Pinel, S. I., Signer, H. R.
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Shaping Function: Polymeric 3D Systems With Unconventional Geometries for Biomedical Applications
Small, EarlyView.Particle shape is a key design parameter governing biological interactions. Advances in fabrication enable precise control over anisotropy and compartmentalization, allowing modulation of cellular uptake, transport, and biodistribution, ultimately enhancing therapeutic performance. ABSTRACT Polymer geometry is a primary determinant of physical behavior
Francisca G. Perfeito +2 more
wiley +1 more source
Journal of Measurement Science and Instrumentation, 2015 A series of aviation lubrication oil 50-1-4Φsamples were prepared with different RP-3content,and then these samples were analyzed by Fourier transform mid-infrared spectrometer（FTIR）.The infrared region of 805-755cm-1 was selected as quantitative area ...
ZONG Ying +3 more
doaj
Case Studies in Thermal EngineeringGiven the urgent demand for lightweight design and energy conservation in aviation engines, this study investigates the impact of gear pair operating parameters on the heat transfer characteristics of the lubrication system.
Yankun Hou +3 more
doaj +1 more source
Effect of lubricant jet location on spiral bevel gear operating temperatures [PDF]
An experimental study was conducted to determine the effect of lubricant jet location on spiral bevel gear bulk temperatures. Transient surface temperatures were also measured.
Handschuh, Robert F.
core +1 more source