Advanced composite flywheel structural design for a pulsed disk alternator

Author

Curtiss, D.H. ; Mongeau, P.P. ; Puterbaugh, R.L.

Author_Institution

Kaman Electromagnetics Corp., Hudson, MA, USA

Volume

31

Issue

1

fYear

1995

Firstpage

26

Lastpage

31

Abstract

Electromagnetic guns require pulsed power supplies that deliver energy to the gun breech in the 2-6 millisecond regime. A flywheel energy storage machine in which the disk rotor contains the field excitation windings appears to be a practical approach to meeting energy/power density requirements. The general concept of constructing an axisymmetric disk to obtain a radial to hoop elastic modulus ratio (E/sub r//E/sub /spl theta//) that optimizes the strength of a radially thick disk is presented. A carbon fiber-epoxy rotor disk designed to operate at 650 meters per second rim speed with a 23% copper conductor thickness fraction is reviewed. Results of sub-scale and/or sub-thickness spin test disks are also discussed.<>

Keywords

alternators; carbon fibre reinforced composites; flywheels; power supplies to apparatus; pulsed power technology; railguns; rotors; 2 to 6 ms; axisymmetric disk; composite flywheel structural design; copper conductor thickness fraction; disk rotor; electromagnetic guns; energy requirements; field excitation windings; flywheel energy storage; gun breech; power density requirements; pulsed disk alternator; pulsed power supplies; radial to hoop elastic modulus ratio; strength optimisation; sub-scale spin test disks; sub-thickness spin test disks; Alternators; Boring; Conductors; Energy storage; Flywheels; Pulsed power supplies; Rectifiers; Rotors; Tensile stress; Turbines;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.364734

Filename

364734