Extended Wear Lifetime Calculation for Grease Lubricated Gears in Consideration of Surface Hardness and Roughness

Greases have a variety of advantages when special operating conditions apply for gear lubrication, e.g.improved properties against continuous (or slow speed) wear.Often, gears with different surface hardness are combined, in order to reduce costs during manufacturing and heat treatment.However, this has detrimental effect on the wear lifetime.Conse

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Effects of Wing-Cuff on NACA 23015 Aerodynamic Performances

The main subject of this work is the numerical study control of flow separation on a NACA 23015 airfoil Foam by using wing cuff.This last is a leading edge modification done to the wing.The modification consists of a slight extension of the chord on the outboard section of the wings.Different numerical cases are considered for the baseline and modi

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Research and Simulation on the Development of a Hydraulic Prop Support System of Powered Roof Support to Increase Work Safety

The underground mining environment is currently based on technology that uses mainly analogue sensors in machine and equipment control systems.The primary machine performing the most important functions in a mining system is the powered roof support.In order for it to work properly, it is important that it achieves the required power.To ensure this

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