Reduced drag airfoil platforms

Details Reduced drag airfoil platforms Reduced drag airfoil platforms

1977-06-09

1979-01-23

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Rotor having flow confining or deflecting web, shroud or...

Axially extending shroud ring or casing

416219R, 416234, 416244A, 416248, F01D 530

Patent

active

041358570

ABSTRACT:
A flow directing apparatus for use in an axial flow turbomachine is disclosed. Techniques for reducing aerodynamic drag along the walls of the flow directing apparatus are developed. In one embodiment, rotor blades have multiplanar platform surfaces which reduce aerodynamic drag pressure losses at the interface between each blade platform and the adjacent structure.

REFERENCES:
patent: 1304793 (1919-05-01), Moore
patent: 1793468 (1931-02-01), Densmore
patent: 2398140 (1946-04-01), Heppner
patent: 2642263 (1953-06-01), Thorp
patent: 2873947 (1959-02-01), Perry
patent: 2918254 (1959-12-01), Hausammann
patent: 3923420 (1975-12-01), Chifos

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