Seymour Lieblein
naca-tn-2179
Sep 1950
A survey of data from investigations of axial-flow-compressor inlet guide vanes with circular-arc, constant-thickness sections and axial air inlet was conducted to establish a relation between vane camber and air turning angle for use in the design of this type of vane.
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http://naca.central.cranfield.ac.uk/reports/1950/naca-tn-2179.pdf