Design of spoked-rim composite flywheels
Conference
·
OSTI ID:7212661
Design and material choices which optimize the energy storage capacity of a free-spinning, circumferentially wound rim flywheel are identified. The rim designs considered were (1) a rim fabricated from a single material, (2) a rim with lead ballast uniformly distributed along its interior edge, and (3) a rim composed of two concentrically wound materials. The composite rims examined were reinforced with graphite, Kevlar 49, Kevlar 29, G-glass, and E-glass. The rims were required to satisfy weight, size and angular speed limitations which appear appropriate for a hybrid heat engine/flywheel propulsion system. A graphite/epoxy rim with an inner-to-outer-radius ratio of 0.775 was found to have the largest energy storage capacity.
- Research Organization:
- Sandia Labs., Albuquerque, N.Mex. (USA)
- DOE Contract Number:
- EY-76-C-04-0789
- OSTI ID:
- 7212661
- Report Number(s):
- SAND-0985C; CONF-771053-1
- Country of Publication:
- United States
- Language:
- English
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