Turbine engine blade with airfoil projection

Details Turbine engine blade with airfoil projection Turbine engine blade with airfoil projection

1978-11-02

1981-03-24

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

416191, 416196R, F01D 522

Patent

active

042577411

ABSTRACT:
A turbomachinery blade, which includes an airfoil and a projection from the airfoil for the purpose of abutting contact with the surface of an adjacent member is provided with a surface means having an improved combination of adhesive wear resistance and impact toughness through the attachment to the contact surface of a discreet wear pad. The pad comprises a substantially fully dense, compacted, sintered member of a material selected from carbides, nitrides and borides, with or without a suitable binder, the pad being of a thickness of at least about 0.01 inches and having thermal expansion characteristics compatible with the projection over the range of intended operating temperature.

REFERENCES:
patent: 2421890 (1947-06-01), Johansson
patent: 2772854 (1956-12-01), Anxionnaz
patent: 2936155 (1960-05-01), Howell et al.
patent: 3104093 (1963-09-01), Craig et al.
patent: 3327995 (1967-06-01), Blackhurst et al.
patent: 3545882 (1970-12-01), Williamson
patent: 3576377 (1971-04-01), Beanland et al.
patent: 3588980 (1971-06-01), Cogan

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