NACA research memorandum RM (series). (National Advisory Committee for Aeronautics.) [Processed. No longer confidential.]. E53I11. Experimental investigation of 0.4 hub-tip diameter ratio axial-flow compressor inlet stage at transonic inlet relative Mach numbers: 1, Rotor design and over-all performance at tip speeds from 60 to 100 percent of design [with list of references] by George K. Serovy, William H. Robbins and Frederick W. Glaser.

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