Rotary energy storage device

Patent · Tue Apr 22 04:00:00 EST 1980

OSTI ID:5853124

Gupta, B P; Lewis, A F

A rotary energy storage device includes a core in which a multiplicity of anisotropic filaments are embedded in a resin matrix. Extending through the core is an axis about which the core is rotatable. At least a portion of the filaments in the core are oriented transversely of each other, but not circumferentially of the axis of rotation. The transverse orientation of the filaments relative to each other produces resistance along at least two axes to radial and tangential stresses imposed on the core when it is rotated. The outer peripheral surface of the core is enclosed and snugly fitted by a shell. The shell includes a filamentary structure that provides a plurality of substantially parallel and juxtaposed filament portions oriented to circumscribe the peripheral surface of the core. The filament portions of the shell are encased in a matrix material that bonds adjacent filament portions to one another. The tensile modulus of the filament portions is such that the shell is more resistant to circumferential expansion than is the core. The shell thus impedes, at least, the circumferential expansion of the core in response to centrifugal loads applied to the core during rotation of the energy storage device. As a result, both the ultimate rotational velocity of which the energy storage device is capable and its energy storage capacity may be increased relative to a device in which the core is unconfined.

• Assignee: Lord Corp
• Patent Number(s): US 4198878
• OSTI ID: 5853124
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250500* -- Energy Storage-- Flywheels
ANISOTROPY
CONFIGURATION
DESIGN
ENERGY STORAGE
FILAMENTS
FLYWHEELS
ISOTROPY
MATERIALS
MATRIX MATERIALS
MECHANICAL ENERGY STORAGE EQUIPMENT
MOTION
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
RESINS
ROTATION
SHELLS
STORAGE
STRESSES