Gas turbine engine compressor casing with internal diameter control
First Claim
1. In a compressor of a gas turbine engine, a casing including at least one radially inner jacket formed by two half-shells provided with coupling flanges, and control means for controlling the inner diameter of the inner jacket depending on the operating conditions of the engine, said control means comprising a plurality of cylindrical bellows secured between said coupling flanges of said two half-shells and connecting said flanges together, said bellows being deformable to vary the length thereof in response to variation of the pressure within said bellows, air bleed ducting communicating said bellows with the air under pressure at the downstream end of the compressor, and further connection means arranged between said two half-shells flexibly securing them together.
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Accused Products
Abstract
A compressor casing in a gas turbine engine includes an inner jacket formed by two half-shells connected by coupling flanges having cylindrical bellows fitted therebetween and arranged to expand and contract to control the inner diameter of the casing depending on the pressure within the bellows as provided by a supply of air taken from the downstream end of the compressor. The two half-shells are also interconnected by an additional flexible connection.
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Citations
7 Claims
- 1. In a compressor of a gas turbine engine, a casing including at least one radially inner jacket formed by two half-shells provided with coupling flanges, and control means for controlling the inner diameter of the inner jacket depending on the operating conditions of the engine, said control means comprising a plurality of cylindrical bellows secured between said coupling flanges of said two half-shells and connecting said flanges together, said bellows being deformable to vary the length thereof in response to variation of the pressure within said bellows, air bleed ducting communicating said bellows with the air under pressure at the downstream end of the compressor, and further connection means arranged between said two half-shells flexibly securing them together.
Specification