Gas turbine engine variable aerofoil vane actuation mechanism

Details Gas turbine engine variable aerofoil vane actuation mechanism Gas turbine engine variable aerofoil vane actuation mechanism

1993-04-23

1994-05-31

Look, Edward K.

Rotary kinetic fluid motors or pumps

With inspection, signaling, indicating or measuring means

415150, 415160, F01D 1716, F01D 2114

Patent

active

053164385

ABSTRACT:
An aerofoil vane actuation mechanism suitable for a gas turbine engine (10) comprises an annular array of pivotable aerofoil vanes (21) which are linked to an annular actuation member (30) by a plurality of levers (27). Each aerofoil vane (21) additionally has an indication lever (31) attached to it. Each indication lever (31) cooperates with the actuation member (30) so that under normal conditions, during pivoting of the vanes (21), no load transfer takes place between them. However in the event of one or more of the vanes (21) failing to pivot properly, such load transfer does take place. Means (37) are provided to detect such load transfer to provide an indication of such failure of a vane (21) to pivot properly.

REFERENCES:
patent: 3613721 (1971-10-01), Horn
patent: 4695220 (1987-09-01), Dawson
patent: 5024580 (1991-06-01), Olive

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