Re: 777 Pratt Engine Arrives at Boeing Field

From:         kls@ohare.Chicago.COM (Karl Swartz)
Organization: Chicago Software Works
Date:         14 Oct 93 23:57:21 PDT
References:   1 2
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>Can somebody get us some specifications of this engine?

The PW engine is perhaps the least exciting of the 777 engines, at
least if you're an airline executive, since it's just another PW4000,
albeit one that's been stretched quite a bit beyond what's currently
in service.  United selected this engine, at least in part, because
it's already flying on their 747-400 and 767-300(ER) fleet.  Other
aircraft flying PW4000-family engines include the A300-600, A300-600R,
A330, and MD-100.  Here are some specs for you:

			      comp/turb
    aircraft	engine	thrust	stages	 diam.	length	weight
    --------	------	------	------	 -----	------	------
    A310-300	PW4152	52,000	 16/6	  97.2	 153.6	 9,400
    747-400	PW4056	56,000	 16/6	  97.2	 153.6	 9,400
    A300-600	PW4156	56,000	 16/6	  97.2	 153.6	 9,400
    A300-600R	PW4158	58,000	 16/6	  97.2	 153.6	 9,400
    767-300(ER)	PW4060	60,000	 16/6	  97.2	 153.6	 9,400
    MD-11	PW4460	60,000	 16/6	  97.2	 153.6	 9,400
    A330	PW4168	68,000	 17/7	 100.0	 163.1	14,350
    777-200	PW4084	84,000	 18/9	 112.0	 191.7	13,700

In contrast, the GE90 is a completely new engine, the most notable
feature of which is the enormous fan -- the 86,800 lbs. thrust version
for the 777 will have a 158" diameter!

I'm not terribly familiar with the Rolls-Royce offering for the 777,
the Trent, but like the PW4000 it is a derivative of current offerings
rather than a new design.

--
Karl Swartz	|INet	kls@ditka.chicago.com		
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