Re: SURGE ON GE90 ENGINE

From:         simonlc@ozemail.com.au (Simon Craig)
Organization: OzEmail Pty Ltd - Australia
Date:         21 Jun 95 02:56:59 
References:   1 2 3
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> >Most modern jet engines (the GE90 included) incorporate
> >variable geometry stator vanes; these contribute to compressor stability
> >by regulating the amount of air admitted to the compressor.
>
> It should read most modern two-spool jet engines.  I don't believe R-R's
> RB211 and Trent have variable stator vanes (VSV).

You are right, the RB211 has a variable inlet guide vane system (VIGV) in
front of the first stage of the 2nd spool or IP (Intermediate pressure)
compressor.  Well spotted.

Simon

simonlc@ozemail.com.au