Arrangement for reducing gap losses in the adjustable guide vane

Details Arrangement for reducing gap losses in the adjustable guide vane Arrangement for reducing gap losses in the adjustable guide vane

1978-08-14

1980-04-01

Smith, Leonard E.

Rotary kinetic fluid motors or pumps

Selectively adjustable vane or working fluid control means

Upstream of runner

291568R, F01D 1100, F01D 1712

Patent

active

041959647

ABSTRACT:
An arrangement for reducing the gap formed by the adjustable axial-flow guide vanes of fluid flow engines, such as gas turbine engines, between the root-sided lower edges of the vane airfoil and the thereto contiguous outer wall of an annular flow passageway. Grooves are formed in the outer wall of the flow passageway above a leading and/or trailing lower edge of the vane airfoil; a soft vane base-covering coating filling said grooves; and recesses formed in the coating-filled grooves slightly above the pivot plane of the respective lower vane edges.

REFERENCES:
patent: 1478053 (1923-12-01), Overn, Jr.
patent: 1817654 (1931-08-01), Terry
patent: 3788763 (1974-01-01), Nickles
patent: 3995971 (1976-12-01), White

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