The flywheel is considered as an energy storage device for an electrically driven car. Certain recent advances in design concepts including a magnetic bearing support system, demonstrated to be feasible in two working models constructed at the City College of New York, have resulted in a simple, virtually friction-free flywheel. The next stages are well within the capabilities of present technology; it is possible, within two years, to build a simple vehicle which would have a range of 50 miles, a top speed of 50 mph, carry 2.4 passengers, require little or no maintenance, have an extremely long life expectancy, and could be completely recharged in 20 minutes. Energy dissipation, (friction, eddy current, and hysteresis losses) have been so significantly reduced, that a single spin of the hand (approximately 60 mph) will keep the flywheel turning for over 6 hours. Since provision for a vacuum chamber could not be realized for this Phase I device, windage losses increase drastically with the speed; from an initial speed of 1,000 rpm the rotor will come to rest in about 13-1/2 hours.

  • Supplemental Notes:
    • Symposium held February 19-21, 1974 and sponsored by the Electric Vehicle Council, New York, New York.
  • Corporate Authors:

    International Electric Vehicle Symp & Expo, 3rd

    Washington, DC  United States 
  • Authors:
    • Weber, R
    • Menkes, S B
  • Publication Date: 1974

Media Info

  • Features: References;
  • Pagination: 23 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00127605
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: No. 7458 Proc Paper
  • Files: TRIS
  • Created Date: Dec 16 1975 12:00AM