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Gas turbine engine compressor casing with internal diameter control

  • US 5,017,088 A
  • Filed: 12/21/1989
  • Issued: 05/21/1991
  • Est. Priority Date: 12/21/1988
  • Status: Expired due to Fees
First Claim
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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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