![]() ![]() The flywheel of claim 1, wherein the fiber-resin composite material is releasably coupled to the outer side of the hub, such that the flywheel is modular in construction.ġ4. The flywheel of claim 1, wherein the flywheel is configured to obtain a kinetic energy in an inclusive range of from about 10 MJ to about 3000 MJ.ġ3. The flywheel of claim 1, wherein the rim diameter is in an inclusive range of from about 45.7 cm (18 in) to about 203 cm (80 in).ġ2. The flywheel of claim 1, wherein the hub and a fiber-resin composite material are configured to withstand a rotational velocity in an inclusive range of from about 15,000 rpm to about 50,000 rpm.ġ1. The flywheel of claim 8, wherein the fastener further comprises one or more of a bolt, a nut, a threaded opening in the loop, or a rod and shear pin or shear web.ġ0. The flywheel of claim 3, further comprising a fastener to affixedly couple the loop to the hub.ĩ. The flywheel of claim 3, further comprising four or more loops arranged symmetrically around the hub.Ĩ. The flywheel of claim 3, wherein a percentage of fibers aligned in the radial direction are in an inclusive range of from about 25% to about 90%.ħ. The flywheel of claim 4, wherein the mass is one or more of aluminum or steel.Ħ. The flywheel of claim 3, further comprising a mass housed within the loop such that the mass can apply compressive force to the loop when a radial force is applied to the mass.ĥ. The flywheel of claim 1, further comprising a loop composed of the fiber-resin composite material coupled to the hub.Ĥ. ![]() The flywheel of claim 1, further comprising a disc section composed of the fiber-resin composite material coupled to the hub.ģ. A flywheel for a flywheel energy storage system, comprising: a hub configured to rotate about a longitudinal axis a fiber-resin composite material coupled to an outer side of the hub and at least some of the fibers in the composite material being radially aligned with respect to the longitudinal axis.Ģ.
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