Engine Design

From:         James.C.Anderson@williams.edu (Jim Anderson)
Organization: Williams College
Date:         14 Mar 95 02:34:34 
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I have a question about the diffenence in engine design between say, GE/PW and
RR.  Corrent me, please, but don't the GE and PW engines have a central "spike"
coming out the back of them and the RR engines don't?  The Rolls engines have 
look of the "pre-high-bypass" days (jt8d seris(?)).  What's the difference?

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Jim Anderson						Williams College
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