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US 9,174,426 B1Granted
Method of manufacturing a shrouded centrifugal impeller for high speed use
AssigneeFlorida Turbine Technologies, Inc.
InventorAdam R. Dowd
Life of this patent
Estimating the term…
Abstract
An apparatus and a process for producing a shrouded centrifugal impeller where a rear hub opening is machined into the stock material so that hard to reach surfaces in the enclosed passages can be machined. When the hard to reach passages are machined to a final stage, the rear hub opening is closed using a process such as electron beam melting or electron beam welding to enclose the passages and form a single piece shrouded impeller.
Claims6
A method of manufacturing a high speed shrouded centrifugal impeller for a rocket engine, comprising the steps of:
- machining from a stock material a centrifugal impeller with blades and a forward shroud and a rear hub opening as a single piece;
- form a rear hub using an additive material manufacturing process to enclose the centrifugal impeller and form a complete centrifugal impeller as a single piece.
Dependencies are inferred from the claim text.