gearbox
Report of the Condition of a General Electric Transportation Systems Gearbox
Wind power plant operation and maintenance (O&M) costs remain an appreciable contributor to the overall cost of wind energy, with a capacity-weighted average of $11/megawatt-hour (MWh) for projects installed since 2000 and $9/MWh for projects install...
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A Comparison of Surface Roughness Measurement Methods for Gear Tooth Working Surfaces
Surface roughness is a critical parameter for gears operating under a variety of conditions. It directly influences friction and contact temperature, and therefore has an impact on various failure modes such as macropitting, micropitting and scuffing...
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Materials Matter : Surface Finishing Rotorcraft Gearing
Rotorcraft gearboxes are designed with the utmost precision to withstand the tremendous demand and loads required to convert thousands of horsepower and RPM into hundreds of RPM and lift torque....
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Oil-Out Endurance Under the Lens
Oil-out conditions, or conditions in which an aircraft is operating without any oil in its gearbox or transmission, are devastating for an aircraft's hardware....
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Evaluation of Isotropic Superfinishing on a Bell Helicopter Model 427 Main Rotor Gearbox
The surface finish of a gear tooth is a critical factor in the wear, durability, noise generation, and efficiency of modern helicopter transmissions....
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The Reduction of Parasitic Friction in Automotive Gearbox and Drive Train Components by the Isotropic Superfinish
Microscopic examination of the traditionally ground tooth surfaces of automotive transmission gears reveals a micro-roughness, and unidirectional pattern corresponding to the direction of the gear tooth grinding operation....
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Isotropic Finishing of Helicopter and Turboprop Gearbox Components
The traditional finishing techniques for engineered gearbox surfaces include but are not limited to hob shaving, gear grinding and honing....
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