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Cold-air performance of a tip turbine designed to drive a lift fan. 1: Baseline performanceFull admission baseline performance was obtained for a 0.4 linear scale of the LF460 lift fan turbine over a range of speeds and pressure ratios without leakage air. These cold-air tests covered a range of speeds from 40 to 140 percent of design equivalent speed and a range of scroll inlet to diffuser exit static pressure ratios from 2.0 to 4.2. Results are presented in terms of specific work, torque, mass flow, efficiency, and total pressure drop.
Document ID
19770005057
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Haas, J. E. (NASA Lewis Research Center Cleveland, OH, United States)
Kofskey, M. G. (NASA Lewis Research Center Cleveland, OH, United States)
Hotz, G. M. (NASA Lewis Research Center Cleveland, OH, United States)
Futral, S. M., Jr. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 3, 2013
Publication Date
December 1, 1976
Subject Category
Aerodynamics
Report/Patent Number
NASA-TM-X-3452
E-8754
Accession Number
77N12000
Funding Number(s)
PROJECT: RTOP 505-05
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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