Fuel system centrifugal boost pump impeller

摘要

A centrifugal boost pump inducer section includes a plurality of inducer main blades, and a plurality of splitter blades, each of which includes normal to the blade mean line cross sectional surfaces distributed over the length of the blades, the cross sectional surfaces defined as a set of R-coordinates, theta-coordinates and Z-coordinates relative to an impeller outer diameter set out in one set of tables. A centrifugal boost pump impeller section includes a plurality of impeller main blades, a plurality of primary splitter blades, and a plurality of secondary splitter blades, each of which includes normal to the blade mean line cross sectional surfaces distributed over the length of the blades, the cross sectional surfaces defined as a set of R-coordinates, theta-coordinates and Z-coordinates relative to an impeller outer diameter set out in another set of tables.

主权项

1. A centrifugal boost pump inducer section comprising:
a plurality of main blades, and a plurality of splitter blades, each of which includes normal to the blade mean line cross sectional surfaces distributed over the length of the blades, the cross sectional surfaces defined as a set of cylindrical coordinates, wherein a Z-axis aligns with a rotational axis of the blades, an R coordinate corresponds to the distance from the Z axis and a theta coordinate is the relative angular position, said coordinates relative to a value D2 which corresponds to an impeller outer diameter, set out in one set of tables, TABLE 1-1 for the main blades and TABLE 1-2 for the splitter blades, or TABLE 2-1 for the main blades and TABLE 2-2 for the splitter blades, or TABLE 3-1 for the main blades and TABLE 3-2 for the splitter blades.