Impeller for turbo pump for water jet propulsion machinery, and turbo pump including same impeller
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United States of America Patent
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Apr 28, 1992
Grant Date -
N/A
app pub date -
Aug 15, 1991
filing date -
May 26, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A turbo pump is provided with an impeller having a volute casing for a diffuser type casing. The configuration of a meridian section of the impeller shroud at the side of a boss is made as a concave arch-like surface of revolution. The shroud at the side of the blade inlet is cylindrical and substantially parallel to the shaft about which the impeller turns. Each of the blades of the impeller is so shaped that the edge of the blade inlet projects toward the impeller eye and is smoothly connected to the surface of the shroud. The inlet angle of the blade is as small as possible.
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