Tandem airfoils

Rotary kinetic fluid motors or pumps – With passage in blade – vane – shaft or rotary distributor...

Patent

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Details

4152094, F01D 514

Patent

active

06099245&

ABSTRACT:
A machine vane unit includes a first airfoil and a second airfoil located between and connected to a first flange and a second flange. The second airfoil includes a second leading portion located rearward of a first leading portion of the first airfoil relative to a direction of intended flow. The first flange and the second flange are configured to be connected to casing for a machine portion. The first airfoil and/or the second airfoil may include and/or have cast therein a hollow. The first airfoil and the second airfoil may be formed integrally.

REFERENCES:
patent: 2029813 (1936-02-01), De Mey
patent: 2649278 (1953-08-01), Stalker
patent: 2701120 (1955-02-01), Stalker
patent: 4314442 (1982-02-01), Rice
patent: 4749333 (1988-06-01), Bonner et al.
patent: 4897020 (1990-01-01), Tonks
patent: 5797725 (1998-08-01), Rhodes
Joseph L. Mallardi, "From Teeth to Jet Engines," Howmet Corp., Greenwich, CT. 1992.

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