Actuating lever for variable stator vanes
First Claim
1. An actuating lever for a pair of variable stator vanes, said lever being operably attachable to a first vane, a second vane and to a unison member said lever comprising:
- a first section for operably connecting said unison member to said first vane;
a second section extending from said first section;
a third section operably connectable to said second vane; and
flexural distortion means comprising a link section fixedly connected to said second and third sections, and being effective for elastically accommodating differential movements of said second and third sections and for obtaining simultaneous rotation of said first and second vanes.
1 Assignment
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Accused Products
Abstract
According to the present invention, there is provided an actuating lever for effecting concurrent vane rotation in tandem rows of variable stator vanes in a gas turbine engine. The actuating lever is interconnected between and operates to activate one vane in each of two axially adjacent vane rows with one free end of the lever being rotatably attached to an actuation ring and the other free end being secured to one of the vane spindles. The second vane spindle is attached at an intermediate position of the lever, and a flexible link section of the lever is provided between the two spindles to accommodate differential movements in the lever experienced during movement of the actuation ring.
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Citations
34 Claims
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1. An actuating lever for a pair of variable stator vanes, said lever being operably attachable to a first vane, a second vane and to a unison member said lever comprising:
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a first section for operably connecting said unison member to said first vane; a second section extending from said first section; a third section operably connectable to said second vane; and flexural distortion means comprising a link section fixedly connected to said second and third sections, and being effective for elastically accommodating differential movements of said second and third sections and for obtaining simultaneous rotation of said first and second vanes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An actuating lever comprising:
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a second section having first and second opposite ends and first and second opposite sides; a third section having first and second opposite ends and first and second opposite sides; and flexural distortion means comprising an elastically-flexible link section having first and second opposite ends, said link section first end being fixedly connected to said second section second end and said link section second end being fixedly connected to said third section first end. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
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31. An actuating apparatus, including a lever, comprising:
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a second section having first and second opposite ends and first and second opposite sides; a third section having first and second opposite ends and first and second opposite sides; and flexural distortion means for accommodating differential movements of said second and third sections and for transferring actuation forces between said second and third sections comprising a link section including; a base portion having opposite ends; a first arm; and a second arm; said first and second arms extending perpendicularly outwardly from respective ones of said opposite ends of said base portion and parallel to each other; and said link first arm being fixedly connected to said second section second end at only said second section first side and said link second arm being fixedly connected to said third section first end at only said third section first side and said second section second side being spaced from said third section second side. - View Dependent Claims (32, 33, 34)
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Specification