Variable vane non-linear schedule for a gas turbine engine

Details Variable vane non-linear schedule for a gas turbine engine Variable vane non-linear schedule for a gas turbine engine

1991-07-15

1993-03-02

Kwon, John T.

Rotary kinetic fluid motors or pumps

Selectively adjustable vane or working fluid control means

Separate means upstream and downstream of blade set

415160, 415161, 415162, 416168A, F01D 1716

Patent

active

051904390

ABSTRACT:
A method and apparatus for adjusting the angle of variable angle inlet guide vanes provides a non-linear adjustment schedule for a selected vane row as compared to the adjustment schedule for the IGV vane row. The non-linear schedule is conveniently achieved by providing a modified adjustment linkage utilizing a bell crank. The non-linear schedule provides improved engine stall margin at low engine speeds.

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patent: 3873230 (1975-03-01), Norris et al.
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patent: 4295784 (1981-10-01), Manning
patent: 4720237 (1988-01-01), Weiner et al.
patent: 5044879 (1991-09-01), Farrar

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