Lists Flywheel Energy Storage Businesses (Momentum Technologies) Provides sources of flywheel energy storage systems. Flywheels may be an alternative to batteries for storage. Papers Flywheel Electricity Storage (ActivePower.com) Provides a flywheel energy storage system. 7-05 Flywheel Energy - Formulas (RPM) Provides formulas for use of a flywheel for energy storage. 4-02 Flywheel Energy Storage (BeaconPower.com) Provides solar electric energy storage. 7-05 Flywheel Energy Storage - Benefits (Rayner) "In order to optimize the energy-to-mass ratio, the flywheel needs to spin at the maximum possible speed. This is because kinetic energy only increases linearly with Mass but goes as the square of the rotational speed." Tensile strength is therefore more important than density. 1-02 Flywheel Energy Storage - Composites (ASPES) Lighter weight composites, such as carbon fiber, are considered desirable because energy storage is more influenced by speed of rotation than mass. Composites can be designed to be safe if they ever fail. Instead of having a sharp object (such as steel) penetrate the housing, a long fiber of carbon could be designed to just unravel--and not penetrate the housing. Also discusses the most cost-effective bearings to use. 1-02 Flywheel Energy Storage - Formulas (Fradella) Provides formulas for developing an effective flywheel for storing electrical energy. Regenerative braking in cars or electric bikes is a variation on the concept. Flywheel Power Assist for Cars (Popular Mechanics) Describes a flywheel energy system, by Aura Systems Flywheel, designed to replace a car's alternator, flywheel, solenoid, starter, and belts. 03-06 Flywheel and Gas Turbine-Powered Hybrid Cars (Scientific American - Rosen and Castleman) Describes a car powered by a flywheel and a gas turbogenerator. The authors intend to manufacture and sell the car. 03-06 Purchase Resources Flywheels (Kenyon) Provides gyroscopic stabilizers that possibly could be used to stabilize bikes (instead of the use of three wheels). Awesome Library does not endorse the product, but provides it as an example. 1-02

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