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Test characteristics of a welded rotor in a 36,000-rpm Lundell alternatorTwo four-pole Lundell-type rotors consisting of magnetic and nonmagnetic materials were fabricated by weld-depositing Inconel 625 between two sections of AISI 4617 steel. The rotors had a major diameter of 8.28 cm (3.26 in.). Saturation curves for load and no-load conditions with one of the rotors installed in a 1200-Hz Brayton-cycle research alternator are presented. The other identical rotor was spin-tested to a speed of 63,000 rmp, which was equal to 175 percent of the rated speed.
Document ID
19740003191
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Lumannick, S. (NASA Lewis Research Center Cleveland, OH, United States)
Medwid, D. W. (NASA Lewis Research Center Cleveland, OH, United States)
Tulisiak, G. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 3, 2013
Publication Date
November 1, 1973
Subject Category
Machine Elements And Processes
Report/Patent Number
NASA-TM-X-2944
E-7535
Accession Number
74N11304
Funding Number(s)
PROJECT: RTOP 503-35
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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