DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click
HERE to register or log in.
Accession Number:
AD0876698
Title:
High-Speed Cryogenic Alternator Development. Volume 1
Corporate Author:
GENERAL ELECTRIC CO SCHENECTADY NY MECHANICAL ENGINEERING LAB
Report Date:
1970-07-01
Abstract:
The goals of this report are to define the basic problems and then establish a sound engineering basis for the design of high-speed high-efficiency compact alternators to operate at cryogenic temperatures. The engineering basis used was to make an alternator electromagnetic design suitable for an existing General Electric expansion turbine design, all operating on gas-lubricated bearings at speeds up to 180,000 rpm, with an electrical power output of 100 watts. A permanent magnet alternator was designed, manufactured, and tested at both room temperature and cryogenic temperatures. The alternator was tested with leading, unity, and lagging power factors. At cryogenic temperatures, in the order of 100K -280F, tests were conducted and the turboalternator was evaluated at speeds up to 220,000 rpm, and with electrical power output values up to 109 watts. An alternator electromagnetic efficiency as high as 98 percent was measured.
Descriptive Note:
Final rept. Mar 1968-Sep 1969, on Phase 1
Supplementary Note:
See also Volume 2, AD876699. DOI: 10.21236/AD0876698
Pages:
0196
Distribution Statement:
Approved for public release; distribution is unlimited.
Contract Number:
DAAK02-68-C-0320
File Size:
9.78MB
