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Gas turbine engine

  • US 6,865,891 B2
  • Filed: 05/08/2003
  • Issued: 03/15/2005
  • Est. Priority Date: 05/16/2002
  • Status: Expired due to Fees
First Claim
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1. A gas turbine engine comprising a first compressor, a combustor and a first turbine arranged in flow series, the first turbine being arranged to drive the first compressor, the first compressor having variable inlet guide vanes, the first turbine having variable inlet guide vanes, a second compressor being arranged upstream of the first compressor, an auxiliary intake being arranged upstream of the first compressor and downstream of the second compressor, valve means being arranged upstream of the first compressor and downstream of the second compressor, the valve means being movable between a first position in which the second compressor supplies fluid to the first compressor and a second position in which the second compressor does not supply fluid to the second compressor and the auxiliary intake supplies fluid to the first compressor and selective drive means being arranged to selectively drive the second compressor.

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