Turbine engine stator including shape memory alloy and...

Details Turbine engine stator including shape memory alloy and... Turbine engine stator including shape memory alloy and...

2008-05-06

2008-05-06

Kershteyn, Igor (Department: 3745)

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between runner portion and static part

Between blade edge and static part

C415S173600, C415S174100, C415S174200, C415S175000

Reexamination Certificate

active

11043369

ABSTRACT:
A turbine engine stator assembly in juxtaposition across a radial gap with a rotary blading assembly includes a radially movable shroud and a gap control member made of at least one shape memory alloy (SMA). The SMA is selected and preconditioned to deform pre-selected amounts to change the radial length of the gap during engine operation responsive to temperature about the SMA. A fluid flow means delivers fluid to the SMA at pre-selected temperatures during engine operation.

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