Re: 30-year-old technology

Date:         18 Mar 97 03:14:49 
From:         kls@ohare.Chicago.COM (Karl Swartz)
Organization: Chicago Software Works, Menlo Park, California
References:   1
Followups:    1 2
Next article
View raw article
  or MIME structure

>Using some examples in the engine business to prove new designs are
>not always better.  The IAE V2500 may have better fuel consumption
>than the CFM56, however, the maturity of the CFM56 engine still
>prove to be very important for the operators.  The same thing
>(i.e., maturity) probably can be said about the PW4084 (vs. the
>GE90 and Trent 800 on the B777).

Why do you lump the Trent 800 with the GE90?  Despite the new name
(er, it was new for the A330) it's a derivative of the tried-and-true
RB.211, and thus could be considered a far more mature design than the
PW4084.  A lot has changed from the L-1011's original RB.211-22B, but
the PW4084 has changed a lot from the A310's PW4152, too.

--
Karl Swartz	|Home	kls@chicago.com
		|Work	kls@netapp.com
		|WWW	http://www.chicago.com/~kls/
Moderator of sci.aeronautics.airliners -- Unix/network work pays the bills