Now in Mechanisms, Systems & Devices
Harnessing Power from Slow Moving Currents
Slow moving ocean currents have the potential to be used to generate predictable, clean power. Prior approaches using gear boxes to connect marine current turbines to low speed generators have been complex and costly. Swedish researchers at Uppala University have designed, modeled, and tested a new complete hydrokinetic system that sits on the bottom of the ocean. Their experimental data, modeling, and simulations may help one day produce economically feasible commercial systems.
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Knowledgebase
The article gives an overview of the strengths and weaknesses of coiled wire compared to machined springs for common applications. In particular it looks at the compression and extension capabilities of both devices and relates it to their achievable accuracy and precision. Additionally, it compares common spring-based specifications, such as bending and lateral translation, together with buckling and torsional forces.
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Knowledgebase
Properly designed, metal-polymer bushings can provide a more reliable bearing system than traditional journal bearings. However, metal-polymer bushings should not be viewed as direct replacements for traditional compressor bearings in all cases, as they tend to function differently at various clearances.
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Groups
Comprised of seven Divisions concerned with the application of basic engineering principles in systems and design.
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