Variable stator vane assembly for a rotary turbine engine

Details Variable stator vane assembly for a rotary turbine engine Variable stator vane assembly for a rotary turbine engine

1988-05-26

1989-10-17

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

Selectively adjustable vane or working fluid control means

Runner, shaft, or separate motor operated

415161, F04D 2936

Patent

active

048742899

ABSTRACT:
A variable angle vane stator arrangement of relatively simple design is pided enabling widely variable angular stator vane positioning with little aerodynamic loss. This is accomplished by positioning the leading nose portion of each variable second row vane axially ahead of, and adjacent, the trailing edge of an associated fixed vane of a first row of vanes to produce a slot between the adjacent vanes through which air can flow. The axis of rotation of each variable vane is located off of the variable vane itself in a manner to maintain good slot geometry over a wide range of vane stagger angles. The variation of the rear vane stagger angle creates a variation in the direction of the exit air vector, which in turn enhances the performance of the following rotor blade row.

REFERENCES:
patent: 2316452 (1943-04-01), Pfenninger
patent: 2904307 (1959-09-01), Balje
patent: 3588270 (1971-06-01), Boelcs
patent: 3632224 (1972-01-01), Wright et al.
patent: 4013377 (1977-03-01), Amos
patent: 4652208 (1987-03-01), Tameo

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